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DTC P1604: Startability Malfunction [06/2016 - 03/2017]: Procedure

  1. CHECK FOR ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Trouble Codes.
    4. Read the DTCs and record the freeze frame data.

      HINT: 

      • This freeze frame data shows the actual engine conditions when engine starting trouble occurred.
      • When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data.
      • The fourth set of freeze frame data is the data recorded when the DTC is stored.
      GTY713601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESULT

      Result Proceed to
      Only DTC P1604 is output A
      DTCs other than P1604 are output B

    Result: 

    B 

    GO TO DTC CHART 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [06/2016 - 03/2017] )

    Result: 

    A 

    See step  2

  2. CHECK ENGINE IMMOBILISER SYSTEM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Immobiliser Fuel Cut.
    5. Read the value displayed on the Techstream.

      OK

      Immobiliser Fuel Cut is OFF.

      HINT: 

      After reconnecting the battery cable, if the engine is started immediately (without waiting 1.8 seconds after turning the ignition switch to ON), the engine will stop (due to the key verification process). The engine can be started after that.

    Result: 

    NG 

    REPAIR ENGINE IMMOBILISER SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2016 - ] )

    Result: 

    OK 

    See step  3

  3. CHECK MALFUNCTION CONDITION 
    1. Confirm the problem symptoms.
      RESULT

      Result Proceed to
      Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred A
      The problem symptoms can be reproduced, or the malfunction conditions are known B

    Result: 

    B 

    See step  25

    Result: 

    A 

    See step  4

  4. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [06/2016 - ] ).
      RESULT

      Freeze Frame Data Item Suspected Area Proceed to
      Engine Speed Battery Voltage
      All 5 sets of freeze frame data are 0 RPM (no engine cranking at all) Minimum voltage is below 5 V Battery fully depleted A
      Minimum voltage is 5 V or higher
      • Starter malfunction
      • Crankshaft position sensor system
      • Excess engine friction
      • Engine immobiliser system
      • ECM
      		 B
      60 to 250 RPM (engine cranks but no initial combustion) -
      • Fuel pump control circuit (low pressure side)
      • Ignition system
      • Engine coolant temperature sensor
      • Engine immobiliser system
      • Fuel injection system
      		 C
      250 RPM or higher (combustion occurs but initial combustion and starter turnoff occur late) -
      • Engine assembly
      • Fuel injection system
      • Fuel pump control circuit (low pressure side)
      		 D

      HINT: 

      When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the freeze frame data will be ON. If "Low Rev for Eng Start" is ON, proceed to E.

      *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine.

      *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items.

      • Immobiliser Fuel Cut
      • Engine Speed (Starter Off)
      • Shift SW Status (R, D Range)

    Result: 

    A 

    CHARGE OR REPLACE BATTERY 

    Result: 

    C 

    See step  10

    Result: 

    D 

    See step  15

    Result: 

    B 

    See step  5

  5. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [06/2016 - ] ).
      RESULT

      Freeze Frame Data Item Result Suspected Area Proceed to
      Battery Voltage Minimum voltage is 9 V or higher and voltage fluctuates*2, *3
      • Crankshaft position sensor system
      • ECM
      		 A
      Minimum voltage is 9 V or higher and voltage does not fluctuate*1 Starter system B
      Minimum voltage is 5 to 9 V*4
      • Excess engine friction
      • Battery fully depleted
      		 C

      HINT: 

      • *1: The 5 sets of freeze frame data show approximately the same battery voltage.
        GTY162595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • *2: The 5 sets of freeze frame data show different battery voltages.
      • *3: If the voltage fluctuates, it can be determined that cranking is being performed. When the engine speed is 0 RPM, the crankshaft position sensor system and/or the ECM may be malfunctioning.
      • *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

    Result: 

    B 

    CHECK STARTER SIGNAL CIRCUIT 

    (Refer to Starter Signal Circuit [06/2016 - 03/2017] )

    Result: 

    C 

    CHECK AND REPAIR ENGINE OR BATTERY 

    Result: 

    A 

    See step  6

  6. CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION) 
    1. Check the tightening and installation condition of the crankshaft position sensor bolt.
    2. Check the connection of the crankshaft position sensor connector.
      RESULT

      Result Proceed to
      Normal A
      Abnormal B

    Result: 

    B 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    A 

    See step  7

  7. CHECK CRANKSHAFT POSITION SENSOR 
    1. Disconnect the crankshaft position sensor connector.
    2. Check for oil on the connector terminals.

      OK

      No oil on the terminals.

    Result: 

    NG 

    REPLACE CRANKSHAFT POSITION SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
    1. Disconnect the crankshaft position sensor connector.
      GTY721324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C47-3 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Crankshaft Position Sensor)
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) - C47-1 (OUT) Always Below 1 Ω
      A34-27 (NE-) - C47-2 (GND) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) or C47-1 (OUT) - Body ground Always 10 kΩ or higher
      A34-27 (NE-) or C47-2 (GND) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  9

  9. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

  10. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [06/2016 - ] ).
      RESULT

      Freeze Frame Data Item Suspected Area Proceed to
      Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Fuel Pump Duty
      Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C or more*1 Coolant Temp is 125°C or higher, or below Ambient Temp for A/C by 15°C or more - Engine coolant temperature sensor A
      Other than above No sets of freeze frame data are 0% - B
      At least 1 of the 5 sets of freeze frame data is 0% Fuel pump control circuit (low pressure side) C
      Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C*2 - At least 1 of the 5 sets of freeze frame data is 0% Fuel pump control circuit (low pressure side) C
      No sets of freeze frame data are 0% - B

      HINT: 

      • *1: A long time had not elapsed after stopping the engine.
      • *2: A long time had elapsed after stopping the engine.

    Result: 

    A 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    C 

    CHECK FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) 

    (Refer to Fuel Pump Control Circuit [06/2016 - 03/2017] )

    Result: 

    B 

    See step  11

  11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for an operating sound from the fuel pump.

      OK

      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard

      HINT: 

      Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

    Result: 

    NG 

    REPAIR FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) 

    Result: 

    OK 

    See step  12

  12. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) 
    1. Disconnect the fuel injector assembly connectors.
      GTY733369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Cylinder Tester Connection Switch Condition Specified Condition
      No. 1 C8-1 - Body ground Ignition switch ON 11 to 14 V
      No. 2 C30-1 - Body ground Ignition switch ON 11 to 14 V
      No. 3 C9-1 - Body ground Ignition switch ON 11 to 14 V
      No. 4 C31-1 - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Fuel Injector Assembly)
      *b No. 1 cylinder
      *c No. 2 cylinder
      *d No. 3 cylinder
      *e No. 4 cylinder

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  13

  13. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for fuel leakage from the fuel pipes.
      RESULT

      Result Proceed to
      Fuel leakage or signs of fuel leakage are present A
      No fuel leakage or signs of fuel leakage B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
      • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

    Result: 

    A 

    REPAIR OR REPLACE FUEL LINE 

    Result: 

    B 

    See step  14

  14. CHECK FUEL SYSTEM 
    1. Check for foreign matter such as iron particles around the fuel pump assembly (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
      RESULT

      Result Proceed to
      There is foreign matter or signs that fuel pump was stuck A
      There is no foreign matter and no signs that fuel pump was stuck B

    Result: 

    A 

    REPAIR OR REPLACE FUEL SYSTEM 

    Result: 

    B 

    See step  24

  15. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [06/2016 - ] ).
      RESULT

      Freeze Frame Data Item Suspected Area Proceed to
      Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Long FT Engine Speed
      Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C or more Coolant Temp is 125°C or higher, or below Ambient Temp for A/C by 15°C or more - - Engine coolant temperature sensor A
      Other than above -15% or less, or +15% or more -
      • Fuel pump control circuit (low pressure side)
      • Fuel injector assembly (for port injection)
      		 B
      -15 to +15% Minimum speed is 300 RPM or more*1 Engine assembly C
      Minimum speed is less than 300 RPM
      • Fuel system
      • Intake air system
      		 D
      Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C - -15% or less, or +15% or more -
      • Fuel pump control circuit (low pressure side)
      • Fuel injector assembly (for port injection)
      		 B
      -15 to +15% Minimum speed is 300 RPM or more*1 Engine assembly C
      Minimum speed is less than 300 RPM
      • Fuel system
      • Intake air system
      		 D

      HINT: 

      *1: Compression loss may have occurred in the engine assembly.

    Result: 

    A 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    C 

    CHECK AND REPAIR ENGINE 

    Result: 

    D 

    See step  18

    Result: 

    B 

    See step  16

  16. INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Check that no carbon is stuck to the fuel injector assembly (for port injection).

      OK

      No carbon present.

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  17

  17. CHECK FUEL SYSTEM 
    1. Check for foreign matter such as iron particles around the fuel pump assembly (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
      RESULT

      Result Proceed to
      There is foreign matter or signs that fuel pump was stuck A
      There is no foreign matter and no signs that fuel pump was stuck B

    Result: 

    A 

    REPAIR OR REPLACE FUEL SYSTEM 

    Result: 

    B 

    See step  24

  18. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [06/2016 - ] ).
      RESULT

      Freeze Frame Data Item Result Suspected Area Proceed to
      Coolant Temp Engine coolant temperature is 40°C or less*1 Pressure regulator A
      Engine coolant temperature is 40 to 90°C*2 Fuel injector B
      Engine coolant temperature is 90°C or higher*3 Pressure regulator A

      HINT: 

      *1: If the engine coolant temperature is 40°C or less (after stopping the engine and the vehicle has not been driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability of the system to maintain fuel pressure after stopping the engine.

      *2: If the engine coolant temperature is 40 to 90°C (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector.

      *3: If the engine coolant temperature is 90°C or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability of the pressure regulator to maintain fuel pressure after stopping the engine.

    Result: 

    B 

    See step  20

    Result: 

    A 

    See step  19

  19. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 

    HINT: 

    For the fuel pressure inspection, refer to the following procedures (Refer to PROCEDURE - Step 2 ).

    1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.

      Standard

      147 kPa (1.5 kgf/cm2 ) or higher (5 minutes after stopping the engine)

      HINT: 

      If the engine cannot be started, read the values after cranking the engine.

      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    A 

    REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

    (Refer to DISASSEMBLY [06/2016 - ] )

    Result: 

    B 

    See step  24

  20. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Clean the inside of the surge tank with compressed air.
    2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
      RESULT

      Result Proceed to
      4000 ppm or more A
      Less than 4000 ppm B

      HINT: 

      If the concentration is 4000 ppm or more, a fuel injector assembly may have a sealing problem.

    Result: 

    B 

    See step  22

    Result: 

    A 

    See step  21

  21. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Inspect the fuel injector assemblies (for port injection) (Refer to REMOVAL [06/2016 - ] ).
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    A 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  22

  22. CHECK THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Check if carbon is in the airflow passage.
      RESULT

      Result Proceed to
      Carbon in passage A
      No carbon present B

    Result: 

    A 

    REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  23

  23. CHECK INTAKE SYSTEM 
    1. Check the intake system for vacuum leaks (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

      OK

      No leaks in intake system.

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  24

  24. PERFORM SIMULATION TEST 
    1. Check if the engine can be started.
      RESULT

      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    Result: 

    A 

    END 

    Result: 

    B 

    See step  25

  25. CONFIRM PROBLEM SYMPTOM 
    1. Confirm the problem symptoms.

      HINT: 

      The problem symptoms below can be determined by reading the freeze frame data.

      RESULT

      Problem Symptom Suspected Area Proceed to
      The engine does not crank
      • Battery fully depleted
      • Starter assembly (includes pinion gear wear or tooth damage)
      • Starter system
      • Engine assembly (excess friction)
      • Flywheel wear or tooth damage (for Manual Transmission)
      • Drive plate wear or tooth damage (for Automatic Transmission)
      		 A
      Abnormal cranking speed
      • Battery fully depleted
      • Starter assembly
      • Engine assembly (excess friction, compression loss)
      		 B
      There is no initial combustion (combustion does not occur even once)*1
      • Pressure regulator fuel pressure maintenance
      • Fuel injector leak
      • Fuel leak from fuel line
      • Fuel pump control circuit (low pressure side)
      • Fuel pump assembly
      • Spark plug
      • Crankshaft position sensor system
      • Ignition coil system
      		 C
      The engine stalls after starter turnoff (engine stalls immediately after the first time the engine speed increases)*2
      • Intake system connections
      • Throttle with motor body assembly
      • Camshaft timing oil control valve
      • Mass air flow meter system
      		 D
      The initial combustion and starter turnoff occur late*3
      • Engine coolant temperature sensor
      • Mass air flow meter
      • Air fuel ratio sensor
      • Heated oxygen sensor
      • Fuel injector assembly (for port injection)
      • Spark plug
      • Pressure regulator
      • Fuel pump assembly
      • Fuel pump control circuit (low pressure side)
      		 E

      HINT: 

      • If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning.
      • *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning.
      • *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the camshaft timing oil control valve may have a problem returning.
      • *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high).

    Result: 

    B 

    See step  32

    Result: 

    C 

    See step  35

    Result: 

    D 

    See step  50

    Result: 

    E 

    See step  57

    Result: 

    A 

    See step  26

  26. PERFORM SIMULATION TEST 
    1. When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely.
      RESULT

      Problem Symptom Suspected Area Proceed to
      A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely*1
      • Battery
      • Excess engine friction
      • Starter assembly
      		 A
      A noise indicating that the starter pinion gear is extending is heard but the starter pinion gear is spinning freely
      • Fly wheel (for Manual Transmission)
      • Drive plate (for Automatic Transmission)
      • Starter assembly
      		 B
      A noise indicating that the starter pinion gear is extending is not heard
      • Battery
      • Starter assembly
      • Starter system
      		 C

      HINT: 

      *1: The battery may be fully depleted or there may be excess engine friction.

    Result: 

    B 

    See step  29

    Result: 

    C 

    See step  30

    Result: 

    A 

    See step  27

  27. INSPECT BATTERY 
    1. Check the electrolyte quantity.
      GTY557897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      Electrolyte quantity is within the specified range.

    2. Inspect the specific gravity.
      1. Inspect the specific gravity of each cell.

        Standard specific gravity

        1.25 to 1.29 (electrolyte is at 20°C (68°F))

        HINT: 

        • If the result is not as specified, recharge or replace the battery.
        • It is not necessary to inspect a maintenance-free battery.
    3. Inspect the battery voltage.
      1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      2. Measure the battery voltage.

        Standard voltage

        12.5 to 12.9 V (electrolyte is at 20°C (68°F))

        HINT: 

        If the result is not as specified, recharge or replace the battery.

      3. Measure the battery voltage when cranking the engine.

        Standard

        Approximately 6 V or higher (0°C (32°F) or higher)

        HINT: 

        When the battery is depleted, the horn becomes quieter.

    Result: 

    NG 

    CHARGE OR REPLACE BATTERY 

    Result: 

    OK 

    See step  28

  28. CHECK ENGINE ASSEMBLY 
    1. Check that the crankshaft rotates smoothly when rotating it by hand.

      OK

      Crankshaft rotates smoothly.

      HINT: 

      Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

      RESULT

      Result Proceed to
      Normal (for Manual Transmission) A
      Normal (for Automatic Transmission) B
      Abnormal C

    Result: 

    A 

    INSPECT STARTER ASSEMBLY 

    (Refer to INSPECTION [06/2016 - ] )

    Result: 

    B 

    INSPECT STARTER ASSEMBLY 

    (Refer to INSPECTION [06/2016 - ] )

    Result: 

    C 

    REPAIR OR REPLACE ENGINE ASSEMBLY 

  29. CHECK STARTER ASSEMBLY 
    1. Remove the starter assembly.
    2. Check for starter pinion gear wear and damage.

      OK

      There is no wear or damage.

      RESULT

      Result Proceed to
      Abnormal (for Manual Transmission) A
      Abnormal (for Automatic Transmission) B
      Normal (for Manual Transmission) C
      Normal (for Automatic Transmission) D

    Result: 

    A 

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    C 

    REPLACE FLYWHEEL SUB-ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    D 

    REPLACE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

  30. INSPECT BATTERY 
    1. Check the electrolyte quantity.
      GTY557897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      Electrolyte quantity is within the specified range.

    2. Inspect the specific gravity.
      1. Inspect the specific gravity of each cell.

        Standard specific gravity

        1.25 to 1.29 (electrolyte is at 20°C (68°F))

        HINT: 

        • If the result is not as specified, recharge or replace the battery.
        • It is not necessary to inspect a maintenance-free battery.
    3. Inspect the battery voltage.
      1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      2. Measure the battery voltage.

        Standard voltage

        12.5 to 12.9 V (electrolyte is at 20°C (68°F))

        HINT: 

        If the result is not as specified, recharge or replace the battery.

      3. Measure the battery voltage when cranking the engine.

        Standard

        Approximately 6 V or higher (0°C (32°F) or higher)

        HINT: 

        When the battery is depleted, the horn becomes quieter.

    Result: 

    NG 

    CHARGE OR REPLACE BATTERY 

    Result: 

    OK 

    See step  31

  31. INSPECT STARTER ASSEMBLY 
    1. Inspect the starter assembly.
      RESULT

      Result Proceed to
      Normal A
      Abnormal (for Manual Transmission) B
      Abnormal (for Automatic Transmission) C

    Result: 

    OK 

    CHECK STARTER SIGNAL CIRCUIT 

    (Refer to Starter Signal Circuit [06/2016 - 03/2017] )

    Result: 

    NG 

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    C 

    REPLACE STARTER ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

  32. PERFORM SIMULATION TEST 
    1. Check the cranking speed.
      RESULT

      Problem Symptom Suspected Area Proceed to
      Cranking speed is slow (100 RPM or less)
      • Battery
      • Starter assembly
      • Excess engine friction
      		 A
      Cranking speed is fast (300 RPM or more)*1 Engine compression loss B

      HINT: 

      *1: If the cranking speed is fast, there may be compression loss.

    Result: 

    B 

    CHECK AND REPAIR ENGINE ASSEMBLY 

    Result: 

    A 

    See step  33

  33. INSPECT BATTERY 
    1. Check the electrolyte quantity.
      GTY557897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      Electrolyte quantity is within the specified range.

    2. Inspect the specific gravity.
      1. Inspect the specific gravity of each cell.

        Standard specific gravity

        1.25 to 1.29 (electrolyte is at 20°C (68°F))

        HINT: 

        • If the result is not as specified, recharge or replace the battery.
        • It is not necessary to inspect a maintenance-free battery.
    3. Inspect the battery voltage.
      1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      2. Measure the battery voltage.

        Standard voltage

        12.5 to 12.9 V (electrolyte is at 20°C (68°F))

        HINT: 

        If the result is not as specified, recharge or replace the battery.

      3. Measure the battery voltage when cranking the engine.

        Standard

        Approximately 6 V or higher (0°C (32°F) or higher)

        HINT: 

        When the battery is depleted, the horn becomes quieter.

    Result: 

    NG 

    CHARGE OR REPLACE BATTERY 

    Result: 

    OK 

    See step  34

  34. CHECK ENGINE ASSEMBLY 
    1. Check that the crankshaft rotates smoothly when rotating it by hand.

      OK

      Crankshaft rotates smoothly.

      HINT: 

      Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

      RESULT

      Result Proceed to
      Normal (for Manual Transmission) A
      Normal (for Automatic Transmission) B
      Abnormal C

    Result: 

    A 

    INSPECT STARTER ASSEMBLY 

    (Refer to INSPECTION [06/2016 - ] )

    Result: 

    B 

    INSPECT STARTER ASSEMBLY 

    (Refer to INSPECTION [06/2016 - ] )

    Result: 

    C 

    REPAIR OR REPLACE ENGINE ASSEMBLY 

  35. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Using a sound scope or screwdriver, check for fuel injector operating noise while cranking the engine.

      OK

      Fuel injector operating noise is heard.

    Result: 

    NG 

    See step  48

    Result: 

    OK 

    See step  36

  36. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 
    1. Inspect the fuel pressure (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    See step  46

    Result: 

    OK 

    See step  37

  37. CHECK SPARK PLUG AND SPARK 
    1. Check for sparks (Refer to PROCEDURE - Step 1 ).

    Result: 

    NG 

    See step  41

    Result: 

    OK 

    See step  38

  38. CONFIRM VEHICLE CONDITION 
    1. Confirm the conditions present when the malfunction occurred based on the customer problem analysis.
      RESULT

      Problem Symptom Suspected Area Proceed to
      When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A
      When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector leak B
      When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A
      Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4

      HINT: 

      *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability of the system to maintain fuel pressure after stopping the engine.

      *2: Fuel may be leaking from a fuel injector assembly.

      *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability of the pressure regulator to maintain fuel pressure after stopping the engine.

      *4: From step 72, perform fuel system troubleshooting C (steps 73 to 76).

    Result: 

    B 

    See step  40

    Result: 

    C 

    See step  72

    Result: 

    A 

    See step  39

  39. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 

    HINT: 

    For the fuel pressure inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
      RESULT

      Result Proceed to
      Below 147 kPa (1.5 kgf/cm2 ) (5 minutes after stopping the engine) A
      147 kPa (1.5 kgf/cm2 ) or higher (5 minutes after stopping the engine) B*1

      HINT: 

      • If the engine cannot be started, check the fuel pressure after cranking the engine.
      • *1: From step 72, perform fuel system troubleshooting C (steps 73 to 76).

    Result: 

    A 

    REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

    (Refer to DISASSEMBLY [06/2016 - ] )

    Result: 

    B 

    See step  72

  40. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
      RESULT

      Result Proceed to
      4000 ppm or more A
      Less than 4000 ppm B*1

      HINT: 

      • If the concentration is 4000 ppm or more, a fuel injector assembly may have a sealing problem.
      • *1: From step 72, perform fuel system troubleshooting C (steps 73 to 76).

    Result: 

    A 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  72

  41. CHECK SPARK PLUG 
    1. Inspect the spark plugs (Refer to PROCEDURE - Step 3 ).

      HINT: 

      Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders.

    Result: 

    NG 

    REPLACE SPARK PLUG 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  42

  42. READ VALUE USING TECHSTREAM (ENGINE SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.
    4. Start the engine.
    5. While running the engine, read the value of Engine Speed.

      OK

      A value that matches the actual engine speed is constantly output.

      HINT: 

      • Check the engine speed using a line graph.
      • If the engine cannot be started, check the engine speed while cranking the engine.
      • If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit.

    Result: 

    NG 

    CHECK CRANKSHAFT POSITION SENSOR CIRCUIT 

    (Refer to CAUTION / NOTICE / HINT )

    Result: 

    OK 

    See step  43

  43. CHECK TERMINAL VOLTAGE (IGNITION COIL POWER SOURCE) 
    1. Disconnect the ignition coil assembly connectors.
      GTY704602Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C44-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C42-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C45-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C43-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Ignition Coil Assembly)
      *b No. 1 cylinder
      *c No. 2 cylinder
      *d No. 3 cylinder
      *e No. 4 cylinder

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    CHECK IGNITION COIL POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  44

  44. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) 
    1. Disconnect the ignition coil assembly connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A36-21 (IGT1) - C44-2 (IGT1) Always Below 1 Ω
      A36-10 (IGT2) - C42-2 (IGT2) Always Below 1 Ω
      A36-31 (IGT3) - C45-2 (IGT3) Always Below 1 Ω
      A36-8 (IGT4) - C43-2 (IGT4) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A36-21 (IGT1) or C44-2 (IGT1) - Body ground Always 10 kΩ or higher
      A36-10 (IGT2) or C42-2 (IGT2) - Body ground Always 10 kΩ or higher
      A36-31 (IGT3) or C45-2 (IGT3) - Body ground Always 10 kΩ or higher
      A36-8 (IGT4) or C43-2 (IGT4) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  45

  45. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) 
    1. Disconnect the ignition coil assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      C44-3 (GND) - Body ground Always Below 1 Ω
      C42-3 (GND) - Body ground Always Below 1 Ω
      C45-3 (GND) - Body ground Always Below 1 Ω
      C43-3 (GND) - Body ground Always Below 1 Ω

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • If the wire harness is normal, after replacing the ignition coil assembly, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform troubleshooting for the ignition system (steps 78 to 83).

    Result: 

    OK 

    REPLACE IGNITION COIL ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  46. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for an operating sound from the fuel pump.

      OK

      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard

      HINT: 

      Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

    Result: 

    NG 

    CHECK FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) 

    (Refer to Fuel Pump Control Circuit [06/2016 - 03/2017] )

    Result: 

    OK 

    See step  47

  47. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for fuel leakage from the fuel pipes.
      RESULT

      Result Proceed to
      Fuel leakage or signs of fuel leakage are present A
      No fuel leakage or signs of fuel leakage B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
      • If there are no fuel leaks, after inspecting the fuel pump control circuit, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform fuel system troubleshooting C (steps 73 to 77).

    Result: 

    A 

    REPAIR OR REPLACE FUEL LINE 

    Result: 

    B 

    CHECK FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) 

    (Refer to Fuel Pump Control Circuit [06/2016 - 03/2017] )

  48. READ VALUE USING TECHSTREAM (ENGINE SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Data List / Engine Speed.
    4. Start the engine.
    5. While running the engine, read the value of Engine Speed.

      OK

      A value that matches the actual engine speed is constantly output.

      HINT: 

      • Check the engine speed using a line graph.
      • If the engine cannot be started, check the engine speed while cranking the engine.
      • If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit.

    Result: 

    NG 

    REPLACE CRANKSHAFT POSITION SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  49

  49. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) 
    1. Disconnect the fuel injector assembly connectors.
      GTY733369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Cylinder Tester Connection Switch Condition Specified Condition
      No. 1 C8-1 - Body ground Ignition switch ON 11 to 14 V
      No. 2 C30-1 - Body ground Ignition switch ON 11 to 14 V
      No. 3 C9-1 - Body ground Ignition switch ON 11 to 14 V
      No. 4 C31-1 - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Fuel Injector Assembly)
      *b No. 1 cylinder
      *c No. 2 cylinder
      *d No. 3 cylinder
      *e No. 4 cylinder

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  50

  50. INSPECT MASS AIR FLOW METER 
    1. Inspect the mass air flow meter (Refer to INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    See step  56

    Result: 

    OK 

    See step  51

  51. CHECK INTAKE SYSTEM 
    1. Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

      HINT: 

      • If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake manifold increases and the air suction noise becomes louder.
      • If Short FT and Long FT are largely different from the normal values (differ by more than 15%) when idling (intake air volume is small) and almost the same as the normal values when racing the engine (for example, when maintaining a speed of 3000 RPM) (intake air volume is high), air leakage may be present.

      OK

      There is no air leakage.

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  52

  52. CHECK THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Disconnect the throttle with motor body assembly connector.

      HINT: 

      When the connector is disconnected, the vehicle enters fail-safe mode.

    2. Crank the engine and check that it starts.
      RESULT

      Result Proceed to
      Engine starts A
      Engine does not start B
    3. Connect the throttle with motor body assembly connector.

      HINT: 

      When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Refer to DTC CHECK / CLEAR [06/2016 - ] ).

    Result: 

    B 

    See step  54

    Result: 

    A 

    See step  53

  53. CHECK THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Check if carbon is in the airflow passage.

      OK

      No carbon present.

    Result: 

    NG 

    REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  54

  54. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the Techstream on.
    3. Warm up the engine.
    4. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank1) or Control the VVT Linear (Bank2).

      HINT: 

      When performing the Active Test, make sure the A/C is on and the shift lever is in P, N or neutral position.

    5. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

      OK

      Techstream Operation Specified Condition
      0 deg (CA) Normal engine speed
      36 deg (CA) Engine idles roughly or stalls

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      • If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.

    Result: 

    NG 

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE SIDE) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  55

  55. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the Techstream on.
    3. Warm up the engine.
    4. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

      HINT: 

      When performing the Active Test, make sure the A/C is on and the shift lever is in P, N or neutral position.

    5. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

      OK*1

      Techstream Operation Specified Condition
      0 deg (CA) Normal engine speed
      51 deg (CA) Engine idles roughly or stalls
      RESULT

      Result Proceed to
      NG A
      OK B

      HINT: 

      • *1: From step 72, perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94).
      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      • If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.

    Result: 

    A 

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR EXHAUST SIDE) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  72

  56. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) 
    1. Disconnect the mass air flow meter connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A33-22 (VG) - C16-5 (VG) Always Below 1 Ω
      A33-29 (E2G) - C16-4 (E2G) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A33-22 (VG) or C16-5 (VG) - Body ground Always 10 kΩ or higher
      A33-29 (E2G) or C16-4 (E2G) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94).

    Result: 

    OK 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  57. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Inspect the engine coolant temperature sensor (Refer to INSPECTION [06/2016 - ] ).

      HINT: 

      If the engine coolant temperature sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order.

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  58

  58. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 
    1. Disconnect the engine coolant temperature sensor connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A36-30 (THW) - C35-2 (THW) Always Below 1 Ω
      A36-29 (E1) - C35-1 (E2) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A36-30 (THW) or C35-2 (THW) - Body ground Always 10 kΩ or higher
      A36-29 (E1) or C35-1 (E2) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  59

  59. INSPECT MASS AIR FLOW METER 
    1. Inspect the mass air flow meter (Refer to INSPECTION [06/2016 - ] ).

      HINT: 

      If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  60

  60. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) 
    1. Disconnect the mass air flow meter connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A33-22 (VG) - C16-5 (VG) Always Below 1 Ω
      A33-29 (E2G) - C16-4 (E2G) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A33-22 (VG) or C16-5 (VG) - Body ground Always 10 kΩ or higher
      A33-29 (E2G) or C16-4 (E2G) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  61

  61. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Data List / Atmospheric Pressure and Long FT.
      RESULT

      Data List Item Result Suspected Area Proceed to
      Long FT +25% or more or less than -25%
      • Air fuel ratio sensor
      • Heated oxygen sensor
      • Mass air flow meter
      • Fuel injector assembly (for port injection)
      • ECM
      		 A
      Atmosphere Pressure 80 kPa or less (when elevation is 0 m)
      Both Data List items listed above Values are other than above - B

    Result: 

    B 

    See step  65

    Result: 

    A 

    See step  62

  62. PERFORM SIMULATION TEST 
    1. Remove the EFI MAIN and ETCS fuses from the engine room relay block assembly.
    2. After 60 seconds or more elapse, install the EFI MAIN and ETCS fuses.
    3. Check if the engine can be started.
      RESULT

      Result Proceed to
      Engine can be started A
      Engine cannot be started B

    Result: 

    B 

    See step  65

    Result: 

    A 

    See step  63

  63. INSPECT AIR FUEL RATIO SENSOR 
    GTY699579Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect the Techstream to the DLC3.
    2. Start the engine.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List / Fuel System Status #1.
    5. Confirm that Fuel System Status #1 is CL.
    6. Enter the following menus: Powertrain / Engine / Data List / AF Lambda B1S1.
    7. Confirm that AF Lambda B1S1 is both within the range of 0.95 to 1.05 when idling.
    8. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F sensor.
    9. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

      Standard

      Techstream Display Injection Volume Specified Condition
      AFS Voltage B1S1 +12% Air fuel ratio sensor output voltage is below 2.0 V
      -12% Air fuel ratio sensor output voltage is higher than 2.4 V
      RESULT

      Result Proceed to
      Normal A
      Abnormal B

      HINT: 

      • The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
      • If the air fuel ratio sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    B 

    REPLACE AIR FUEL RATIO SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    A 

    See step  64

  64. PERFORM SIMULATION TEST 
    1. Check if the idling speed is stable after starting the engine.

      OK

      Speed is stable.

      HINT: 

      After replacing the fuel injector assembly or mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    OK 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

  65. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 
    1. Inspect the fuel pressure (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    See step  71

    Result: 

    OK 

    See step  66

  66. CHECK SPARK PLUG 
    1. Inspect the spark plugs (Refer to PROCEDURE - Step 3 ).
      RESULT

      Result Proceed to
      All cylinders are normal A
      One cylinder is abnormal*1 B
      All cylinders are abnormal*2, *3 C

      HINT: 

      • *1: If one cylinder is abnormal, replace the spark plug of that cylinder and inspect the ignition and fuel system for that cylinder. After performing repairs, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.
      • *2: If all cylinders are abnormal, replace the spark plugs of all cylinders and check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.
      • *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly.

    Result: 

    B 

    REPLACE SPARK PLUG (ABNORMAL CYLINDER) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    C 

    REPLACE SPARK PLUG (ALL) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    A 

    See step  67

  67. CONFIRM VEHICLE CONDITION 
    1. Confirm the conditions present when the malfunction occurred based on the customer problem analysis.
      RESULT

      Problem Symptom Suspected Area Proceed to
      When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A
      When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector leak B
      When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A
      Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4

      HINT: 

      *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability of the system to maintain fuel pressure after stopping the engine.

      *2: Fuel may be leaking from a fuel injector assembly.

      *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability of the pressure regulator to maintain fuel pressure after stopping the engine.

      *4: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order.

    Result: 

    B 

    See step  69

    Result: 

    C 

    See step  72

    Result: 

    A 

    See step  68

  68. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 

    HINT: 

    For the fuel pressure inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
      RESULT

      Result Proceed to
      Below 147 kPa (1.5 kgf/cm2 ) (5 minutes after stopping the engine) A
      147 kPa (1.5 kgf/cm2 ) or higher (5 minutes after stopping the engine) B*1

      HINT: 

      • If the engine cannot be started, check the fuel pressure after cranking the engine.
      • *1: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order.

    Result: 

    A 

    REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

    (Refer to DISASSEMBLY [06/2016 - ] )

    Result: 

    B 

    See step  72

  69. CHECK PURGE VALVE 
    1. Disconnect the purge hose (on the canister side) of the purge valve.
      GTY728340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Idle the engine.
    4. Disconnect the connector of the purge valve.
    5. Check if air flows through the purge valve.

      OK

      Air does not flow.

    6. Connect the connector of the purge valve.
    7. Connect the purge hose of the purge valve.

      HINT: 

      When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Refer to DTC CHECK / CLEAR [06/2016 - ] ).

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  70

  70. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Clean the inside of the surge tank with compressed air.
    2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
      RESULT

      Result Proceed to
      4000 ppm or more A
      Less than 4000 ppm B*1

      HINT: 

      • If the concentration is 4000 ppm or more, a fuel injector assembly may have a sealing problem.
      • *1: From step 72, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.

    Result: 

    A 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  72

  71. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for fuel leakage from the fuel pipes.
      RESULT

      Result Proceed to
      Fuel leakage or signs of fuel leakage are present A
      No fuel leakage or signs of fuel leakage B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
      • If there are no fuel leaks, after inspecting the fuel pump control circuit, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 114), in that order.

    Result: 

    A 

    REPAIR OR REPLACE FUEL LINE 

    Result: 

    B 

    CHECK FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) 

    (Refer to Fuel Pump Control Circuit [06/2016 - 03/2017] )

  72. CHECK MALFUNCTION CONDITION 
    1. If the malfunction could not be identified during the inspections in steps 38, 39, 40 and 47, perform fuel system troubleshooting C (steps 73 to 76).
      RESULT

      Performed Step Troubleshooting by System Procedure Proceed to
      Steps 38, 39, 40 and 47 Fuel system troubleshooting C 73 to 76 A
    2. If the malfunction could not be identified during the inspection in step 45, perform ignition system troubleshooting (steps 77 to 83).
      RESULT

      Performed Step Troubleshooting by System Procedure Proceed to
      Step 45 Ignition system troubleshooting 77 to 83 B
    3. If the malfunction could not be identified during the inspections in steps 55, 56 and 57, perform intake air system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94).
      RESULT

      Performed Step Troubleshooting by System Procedure Proceed to
      Step 55, 56, 57 Intake air system troubleshooting 84 to 86 C
      Fuel system troubleshooting A 87 to 94
    4. If the malfunction could not be identified during the inspections in steps 58, 59, 60, 63, 64, 66, 67, 68, 70 and 71, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake air system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order.
      RESULT

      Performed Step Troubleshooting by System Procedure Proceed to
      Steps 57, 58, 59, 60, 63, 64, 66, 67, 68, 70 and 71 Fuel system troubleshooting A 95 to 102 D
      Fuel system troubleshooting B 103 to 105
      Intake air system troubleshooting 106 to 108
      Ignition system troubleshooting 109 to 115

    Result: 

    B 

    See step  77

    Result: 

    C 

    See step  84

    Result: 

    D 

    See step  95

    Result: 

    A 

    See step  73

  73. INSPECT FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Inspect the fuel injector assemblies (for port injection) (Refer to INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  74

  74. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) 
    1. Disconnect the fuel injector assembly connectors.
      GTY733369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Cylinder Tester Connection Switch Condition Specified Condition
      No. 1 C8-1 - Body ground Ignition switch ON 11 to 14 V
      No. 2 C30-1 - Body ground Ignition switch ON 11 to 14 V
      No. 3 C9-1 - Body ground Ignition switch ON 11 to 14 V
      No. 4 C31-1 - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Fuel Injector Assembly)
      *b No. 1 cylinder
      *c No. 2 cylinder
      *d No. 3 cylinder
      *e No. 4 cylinder

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  75

  75. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    See step  76

  76. CHECK VVT SENSOR 
    1. Replace the VVT sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (VVT SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

  77. CHECK CRANKSHAFT POSITION SENSOR 
    1. Check the tightening and installation condition of the crankshaft position sensor bolt.
    2. Check the connection of the crankshaft position sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  78

  78. CHECK VVT SENSOR 
    1. Check the tightening and installation condition of the VVT sensor bolt.
    2. Check the connection of the VVT sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  79

  79. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
    1. Disconnect the crankshaft position sensor connector.
      GTY721324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C47-3 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Crankshaft Position Sensor)
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) - C47-1 (OUT) Always Below 1 Ω
      A34-27 (NE-) - C47-2 (GND) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) or C47-1 (OUT) - Body ground Always 10 kΩ or higher
      A34-27 (NE-) or C47-2 (GND) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  80

  80. CHECK HARNESS AND CONNECTOR (VVT SENSOR (INTAKE SIDE) - ECM) 
    1. Disconnect the VVT sensor connector.
      GTY731224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C12-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C26-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *A Bank 1
      *B Bank 2
      *a Front view of wire harness connector
      (to VVT Sensor (Intake Side))
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-26 (VV1+) - C12-2 (VV1+) Always Below 1 Ω
      A34-34 (VVE) - C12-3 (VV1-) Always Below 1 Ω
      A34-15 (VV2+) - C26-2 (VV2+) Always Below 1 Ω
      A34-34 (VVE) - C26-3 (VV2-) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-26 (VV1+) or C12-2 (VV1+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C12-3 (VV1-) - Body ground Always 10 kΩ or higher
      A34-15 (VV2+) or C26-2 (VV2+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C26-3 (VV2-) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  81

  81. CHECK HARNESS AND CONNECTOR (VVT SENSOR (EXHAUST SIDE) - ECM) 
    1. Disconnect the VVT sensor connector.
      GTY693815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C6-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C25-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *A Bank 1
      *B Bank 2
      *a Front view of wire harness connector
      (to VVT Sensor (Exhaust Side))
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-14 (EV1+) - C6-2 (EV1+) Always Below 1 Ω
      A34-34 (VVE) - C6-3 (EV1-) Always Below 1 Ω
      A34-25 (EV2+) - C25-2 (EV2+) Always Below 1 Ω
      A34-34 (VVE) - C25-3 (EV2-) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-14 (EV1+) or C6-2 (EV1+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C6-3 (EV1-) - Body ground Always 10 kΩ or higher
      A34-25 (EV2+) or C25-2 (EV2+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C25-3 (EV2-) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  82

  82. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    See step  83

  83. CHECK VVT SENSOR 
    1. Replace the VVT sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (VVT SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

  84. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches off.
    4. Enter the following menus: Powertrain / Engine / Data List / ISC Learning Value.
      RESULT

      Data List Item Result Suspected Area Proceed to
      ISC Learning Value (engine displacement (liters) x 0.9) or more
      • Valve timing
      • Compression
      		 A
      Less than (engine displacement (liters) x 0.9) - B

    Result: 

    B 

    See step  86

    Result: 

    A 

    See step  85

  85. CHECK CYLINDER COMPRESSION PRESSURE 
    1. Inspect the compression (Refer to PROCEDURE - Step 9 ).

    Result: 

    OK 

    ADJUST VALVE TIMING 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE ENGINE ASSEMBLY 

  86. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Inspect the engine coolant temperature sensor (Refer to INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  87

  87. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 

    HINT: 

    For the fuel pressure inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    1. Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine.
      RESULT

      Vehicle State Specified Condition
      Cranking engine 304 to 343 kPa (3.1 to 3.5 kgf/cm2 )
      5 minutes after stopping engine 147 kPa (1.5 kgf/cm2 ) or higher

    Result: 

    NG 

    See step  93

    Result: 

    OK 

    See step  88

  88. READ VALUE USING TECHSTREAM (LONG FT) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Data List / Long FT.
      RESULT

      Data List Item Result Suspected Area Proceed to
      Long FT -15 to +15%
      • Wire harness or connector
      • Fuel
      		 A
      +15% or more, or less than -15% Fuel injector assembly B

    Result: 

    B 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    A 

    See step  89

  89. PERFORM SIMULATION TEST 
    1. Check if the idling speed is stable after starting the engine and if an unstable idling speed has ever occurred in the past.
      RESULT

      Problem Symptom Suspected Area Proceed to
      Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A
      All current and past idling speeds are stable Fuel B

      HINT: 

      Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle.

    Result: 

    B 

    REPLACE FUEL 

    Result: 

    A 

    See step  90

  90. CHECK CRANKSHAFT POSITION SENSOR 
    1. Check the tightening and installation condition of the crankshaft position sensor bolt.
    2. Check the connection of the crankshaft position sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  91

  91. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
    1. Disconnect the crankshaft position sensor connector.
      GTY721324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C47-3 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Crankshaft Position Sensor)
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) - C47-1 (OUT) Always Below 1 Ω
      A34-27 (NE-) - C47-2 (GND) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) or C47-1 (OUT) - Body ground Always 10 kΩ or higher
      A34-27 (NE-) or C47-2 (GND) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  92

  92. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

  93. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for fuel leakage from the fuel pipes.
      RESULT

      Result Proceed to
      Fuel leakage or signs of fuel leakage are present A
      No fuel leakage or signs of fuel leakage B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
      • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

    Result: 

    A 

    REPAIR OR REPLACE FUEL LINE 

    Result: 

    B 

    See step  94

  94. INSPECT FUEL PUMP ASSEMBLY 
    1. Inspect the fuel pump assembly (Refer to INSPECTION [06/2016 - ] ).

      HINT: 

      • Make sure there is no foreign matter such as iron particles on the fuel pump assembly and no signs that the fuel pump was stuck.
      • Make sure the internal connector is securely connected.
      • Make sure the fuel pump filter is not clogged.

    Result: 

    OK 

    REPLACE FUEL PRESSURE REGULATOR ASSEMBLY 

    (Refer to DISASSEMBLY [06/2016 - ] )

    Result: 

    NG 

    REPLACE FUEL PUMP ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

  95. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) 

    HINT: 

    For the fuel pressure inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [06/2016 - ] ).

    1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
      RESULT

      Result Proceed to
      147 kPa (1.5 kgf/cm2 ) or higher (5 minutes after stopping the engine) A
      Below 147 kPa (1.5 kgf/cm2 ) (5 minutes after stopping the engine) B

    Result: 

    B 

    See step  101

    Result: 

    A 

    See step  96

  96. READ VALUE USING TECHSTREAM (LONG FT) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Data List / Long FT.
      RESULT

      Data List Item Result Suspected Area Proceed to
      Long FT -15 to +15%
      • Wire harness or connector
      • Fuel
      		 A
      +15% or more, or less than -15% Fuel injector assembly B

    Result: 

    B 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    A 

    See step  97

  97. PERFORM SIMULATION TEST 
    1. Check if the idling speed is stable after starting the engine and if an unstable idling speed has ever occurred in the past.
      RESULT

      Problem Symptom Suspected Area Proceed to
      Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A
      All current and past idling speeds are stable Fuel B

      HINT: 

      Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle.

    Result: 

    B 

    REPLACE FUEL 

    Result: 

    A 

    See step  98

  98. CHECK CRANKSHAFT POSITION SENSOR 
    1. Check the tightening and installation condition of the crankshaft position sensor bolt.
    2. Check the connection of the crankshaft position sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  99

  99. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
    1. Disconnect the crankshaft position sensor connector.
      GTY721324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C47-3 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Crankshaft Position Sensor)
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) - C47-1 (OUT) Always Below 1 Ω
      A34-27 (NE-) - C47-2 (GND) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) or C47-1 (OUT) - Body ground Always 10 kΩ or higher
      A34-27 (NE-) or C47-2 (GND) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  100

  100. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

  101. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
    4. When performing the Active Test, check for fuel leakage from the fuel pipes.
      RESULT

      Result Proceed to
      Fuel leakage or signs of fuel leakage are present A
      No fuel leakage or signs of fuel leakage B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
      • Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.

    Result: 

    A 

    REPAIR OR REPLACE FUEL LINE 

    Result: 

    B 

    See step  102

  102. INSPECT FUEL PUMP ASSEMBLY 
    1. Inspect the fuel pump assembly (Refer to INSPECTION [06/2016 - ] ).

      HINT: 

      • Make sure there is no foreign matter such as iron particles on the fuel pump assembly and no signs that the fuel pump was stuck.
      • Make sure the internal connector is securely connected.
      • Make sure the fuel pump filter is not clogged.

    Result: 

    NG 

    REPLACE FUEL PUMP ASSEMBLY 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  103

  103. CHECK PURGE VALVE 
    1. Disconnect the vacuum hose (on the canister side) of the purge valve.
      GTY728340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Idle the engine.
    4. Disconnect the connector of the purge valve.
    5. Check if air flows through the purge valve.

      OK

      Air does not flow

    6. Connect the connector of the purge valve.
    7. Connect the vacuum hose of the purge valve.

      HINT: 

      When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Refer to DTC CHECK / CLEAR [06/2016 - ] ).

    Result: 

    NG 

    INSPECT PURGE VALVE 

    (Refer to INSPECTION [06/2016 - ] )

    Result: 

    OK 

    See step  104

  104. CHECK FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 
    1. Clean the inside of the surge tank with compressed air.
    2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
      RESULT

      Result Proceed to
      4000 ppm or more A
      Less than 4000 ppm B

      HINT: 

      If the concentration is 4000 ppm or more, a fuel injector assembly may have a sealing problem.

    Result: 

    A 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR PORT INJECTION) 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    B 

    See step  105

  105. CHECK INTAKE VALVE 
    1. Check if carbon is on the intake valves.
      RESULT

      Result Proceed to
      Carbon present A
      No carbon present B

    Result: 

    A 

    CLEAN INTAKE VALVE 

    Result: 

    B 

    See step  106

  106. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
    4. Enter the following menus: Powertrain / Engine / Data List / ISC Learning Value.
      RESULT

      Data List Item Result Suspected Area Proceed to
      ISC Learning Value (engine displacement (liters) x 0.9) or more
      • Valve timing
      • Compression
      		 A
      Less than (engine displacement (liters) x 0.9) - B

    Result: 

    B 

    See step  108

    Result: 

    A 

    See step  107

  107. CHECK CYLINDER COMPRESSION PRESSURE 
    1. Inspect the compression (Refer to PROCEDURE - Step 9 ).

    Result: 

    OK 

    ADJUST VALVE TIMING 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE ENGINE ASSEMBLY 

  108. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Inspect the engine coolant temperature sensor (Refer to INSPECTION [06/2016 - ] ).

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [06/2016 - ] )

    Result: 

    OK 

    See step  109

  109. CHECK CRANKSHAFT POSITION SENSOR 
    1. Check the tightening and installation condition of the crankshaft position sensor bolt.
    2. Check the connection of the crankshaft position sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  110

  110. CHECK VVT SENSOR 
    1. Check the tightening and installation condition of the VVT sensor bolt.
    2. Check the connection of the VVT sensor connector.

      OK

      Sensor is installed correctly.

    Result: 

    NG 

    SECURELY REINSTALL SENSOR 

    (Refer to INSTALLATION [06/2016 - ] )

    Result: 

    OK 

    See step  111

  111. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
    1. Disconnect the crankshaft position sensor connector.
      GTY721324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C47-3 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Crankshaft Position Sensor)
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) - C47-1 (OUT) Always Below 1 Ω
      A34-27 (NE-) - C47-2 (GND) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-16 (NE+) or C47-1 (OUT) - Body ground Always 10 kΩ or higher
      A34-27 (NE-) or C47-2 (GND) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  112

  112. CHECK HARNESS AND CONNECTOR (VVT SENSOR (INTAKE SIDE) - ECM) 
    1. Disconnect the VVT sensor connector.
      GTY731224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C12-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C26-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *A Bank 1
      *B Bank 2
      *a Front view of wire harness connector
      (to VVT Sensor (Intake Side))
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-26 (VV1+) - C12-2 (VV1+) Always Below 1 Ω
      A34-34 (VVE) - C12-3 (VV1-) Always Below 1 Ω
      A34-15 (VV2+) - C26-2 (VV2+) Always Below 1 Ω
      A34-34 (VVE) - C26-3 (VV2-) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-26 (VV1+) or C12-2 (VV1+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C12-3 (VV1-) - Body ground Always 10 kΩ or higher
      A34-15 (VV2+) or C26-2 (VV2+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C26-3 (VV2-) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  113

  113. CHECK HARNESS AND CONNECTOR (VVT SENSOR (EXHAUST SIDE) - ECM) 
    1. Disconnect the VVT sensor connector.
      GTY693814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      C6-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      C25-1 (+B) - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *A Bank 1
      *B Bank 2
      *a Front view of wire harness connector
      (to VVT Sensor (Exhaust Side))
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      A34-14 (EV1+) - C6-2 (EV1+) Always Below 1 Ω
      A34-34 (VVE) - C6-3 (EV1-) Always Below 1 Ω
      A34-25 (EV2+) - C25-2 (EV2+) Always Below 1 Ω
      A34-34 (VVE) - C25-3 (EV2-) Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      A34-14 (EV1+) or C6-2 (EV1+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C6-3 (EV1-) - Body ground Always 10 kΩ or higher
      A34-25 (EV2+) or C25-2 (EV2+) - Body ground Always 10 kΩ or higher
      A34-34 (VVE) or C25-3 (EV2-) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  114

  114. CHECK CRANKSHAFT POSITION SENSOR 
    1. Replace the crankshaft position sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    See step  115

  115. CHECK VVT SENSOR 
    1. Replace the VVT sensor (Refer to REMOVAL [06/2016 - ] ).
    2. Check the engine start operation.

      OK

      Malfunction has been repaired successfully.

    Result: 

    OK 

    END (VVT SENSOR IS DEFECTIVE) 

    Result: 

    NG 

    REPLACE ECM 

    (Refer to REMOVAL [06/2016 - ] )

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