DTC P1604: Startability Malfunction [08/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. 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 then the DTC is stored.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   RESULT
   
   

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

B → See step   118 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Primary / Immobiliser Fuel Cut.
5. Read the value displayed on the Techstream.

   OK

   Immobiliser Fuel Cut is OFF.

   HINT: 

   • If the engine is started immediately after reconnecting the battery terminal, the engine may stall immediately after it starts due to the intercommunication process between each ECU. For this reason, when starting the engine after reconnecting the battery terminal, first turn the engine switch on (IG) and then wait several seconds for the communication process to complete before starting the engine.
   • When this operation causes DTC P1604 to be stored, this is due to normal operation of the immobiliser system and does not indicate a malfunction, so clear the DTC and return the vehicle to the customer.

NG → See step   119 

OK: Go to next step 

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

B → See step   25 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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 [08/2014 - ] .
   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 less than 5 V	Battery fully depleted	A
   	Minimum voltage is 5 V or higher	Starter assembly malfunction Crankshaft position sensor system Excess engine friction ECM	B
   60 to 250 rpm (engine cranks but no initial combustion)	-	Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system	C
   250 rpm or higher (combustion occurs but initial combustion and starter turn off occur late)	-	Engine assembly Engine coolant temperature sensor Fuel injection system Fuel pump control system	D

   Freeze Frame Data Item	Suspected Area	Proceed to
   Low Rev for Eng Start
   ON exists	Intake system connections Throttle body with motor assembly Camshaft timing oil control valve assembly Mass air flow meter sub-assembly	E

   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)

B → See step   5 

C → See step   10 

D → See step   15 

E → See step   49 

A → CHARGE OR REPLACE BATTERY 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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 [08/2014 - ] .
   RESULT
   
   

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Battery Voltage	Minimum voltage is 6 V or higher and voltage does not fluctuate*1	Starter system	A
   	Minimum voltage is 6 V or higher and voltage fluctuates*2, *3	Crankshaft position sensor system ECM	B
   	Minimum voltage is 5 to 6 V*4	Excess engine friction Battery fully depleted	C

   HINT: 

   • *1: The 5 sets of freeze frame data show approximately the same battery voltage.

     Courtesy 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.
   • Perform "Inspection After Repair" after replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   6 

C → CHECK AND REPAIR ENGINE ASSEMBLY OR BATTERY 

A → See step   120 

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.

NG → SECURELY REINSTALL SENSOR 

OK: Go to next step 

1. Disconnect the crankshaft position sensor connector.
2. Check for oil on the connector terminals.

   OK

   No oil on the terminals.

NG → See step   121 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to PROCEDURE - Step 3 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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 [08/2014 - ] .
   RESULT
   
   

   Freeze Frame Data Item			Suspected Area	Proceed to
   Coolant Temp, Intake Air	Coolant Temp	Fuel Pump Duty
   Difference between Coolant Temp and Intake Air is 10°C (18°F) or higher*1	Coolant Temp is 125°C (257°F) or higher, or lower than outside temperature*3 by 15°C (27°F) or higher	-	Engine coolant temperature sensor	A
   	Other than above	All 5 sets of freeze frame data are higher than 0%	-	B
   		At least 1 of the 5 sets of freeze frame data is 0%	Fuel pump control system	C
   Difference between Coolant Temp and Intake Air is less than 10°C (18°F) *2	-	At least 1 of the 5 sets of freeze frame data is 0%	Fuel pump control system	C
   		All 5 sets of freeze frame data are higher than 0%	-	B

   HINT: 

   • *1: A long time had not elapsed after stopping the engine.
   • *2: A long time had elapsed after stopping the engine.
   • *3: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.
   • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to INITIALIZATION [08/2014 - ] .

B → See step   11 

C → See step   122 

A → See step   133 

1. Connect the Techstream to the DLC3.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the fuel pump connector.
3. Turn the engine switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
6. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   P7-4 (B) - Body ground	Active Test is being performed	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Fuel Pump)

   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.

NG → See step   122 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to PROCEDURE - Step 10 .

   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.

NG → See step   143 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
5. 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.

B → See step   14 

A → REPAIR OR REPLACE FUEL LINE 

1. Check for foreign matter such as iron particles around the fuel pump (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

   HINT: 

   If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

B → See step   24 

A → REPAIR OR REPLACE FUEL SYSTEM 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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 [08/2014 - ] .
   RESULT
   
   

   Freeze Frame Data Item				Suspected Area	Proceed to
   Coolant Temp, Intake Air	Coolant Temp	Long FT #1, Long FT #2	Engine Speed
   Difference between Coolant Temp and Intake Air is 10°C (18°F) or higher	Coolant Temp is 125°C (257°F) or more, or lower than outside temperature*2 by 15°C (27°F) or higher	-	-	Engine coolant temperature sensor	A
   	Other than above	-15% or less, or +15% or higher	-	Fuel pump control system Fuel injector assembly	B
   		-15 to +15%	Minimum speed is 300 rpm or higher*1	Engine assembly	C
   			Minimum speed is less than 300 rpm	Fuel system Intake air system	D
   Difference between Coolant Temp and Intake Air is less than 10°C (18°F)	-	-15% or less, or +15% or higher	-	Fuel pump control system Fuel injector assembly	B
   		-15 to +15%	Minimum speed is 300 rpm or higher*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.
   • *2: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.
   • Perform "Inspection After Repair" after replacing the engine assembly or engine coolant temperature sensor. Refer to INITIALIZATION [08/2014 - ] .

B → See step   16 

C → CHECK AND REPAIR ENGINE ASSEMBLY 

D → See step   18 

A → See step   133 

1. Check that no carbon is stuck to the fuel injector assembly.

   OK

   No carbon present.

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   123 

OK: Go to next step 

1. Check for foreign matter such as iron particles around the fuel pump (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

   HINT: 

   If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

B → See step   24 

A → REPAIR OR REPLACE FUEL SYSTEM 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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 [08/2014 - ] .
   RESULT
   
   

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Coolant Temp	Engine coolant temperature is 40°C (104°F) or less*1	Pressure regulator	A
   	Engine coolant temperature is 40 to 90°C (104 to 194°F)*2	Fuel injector assembly	B
   	Engine coolant temperature is 90°C (194°F) or higher*3	Pressure regulator	A

   HINT: 

   *1: If the engine coolant temperature is 40°C [104°F] or less (after stopping the engine and the vehicle is not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: If the engine coolant temperature is 40 to 90°C [104 to 194°F] (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector assembly.

   *3: If the engine coolant temperature is 90°C [194°F] or higher (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 to maintain fuel pressure after stopping the engine.

B → See step   20 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

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

   Standard

   147 kPa (1.5 kgf/cm² , 21 psi) 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

B → See step   24 

A → See step   141 

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 higher	A
   Less than 4000 ppm	B

   HINT: 

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

B → See step   22 

A: Go to next step 

1. Inspect the fuel injector assemblies. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   123 

OK: Go to next step 

1. Check if carbon is in the air flow passage.
   RESULT
   
   

   Result	Proceed to
   No carbon present	A
   Carbon in passage	B

   HINT: 

   Perform "Inspection After Repair" after cleaning or replacing the throttle body with motor assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   124 

A: Go to next step 

1. Check the intake system for vacuum leaks. Refer to ON-VEHICLE INSPECTION [08/2014 - ] .

   OK

   No leaks in intake system.

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE INTAKE SYSTEM 

OK: Go to next step 

1. Check if the engine can be started.
   RESULT
   
   

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

B → END 

A: Go to next step 

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 teeth damage) Starter system Engine assembly (excess friction) Drive plate and ring gear sub-assembly wear or teeth damage	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 assembly leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil assembly system	C
   The engine stalls after starter turn off (engine stalls immediately after the first time the engine speed increases)*2	Intake system connections Throttle body with motor assembly Camshaft timing oil control valve assembly Mass air flow meter sub-assembly system	D
   The initial combustion and starter turn off occur late*3	Engine coolant temperature sensor Mass air flow meter sub-assembly Air fuel ratio sensor Heated oxygen sensor Fuel injector assembly Spark plug Pressure regulator Fuel pump Fuel pump control system	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 turn off, 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 turn off occur late, the fuel injection volume may be incorrect (too low or too high).

B → See step   32 

C → See step   35 

D → See step   49 

E → See step   55 

A: Go to next step 

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.	Drive plate and ring gear sub-assembly 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.

B → See step   29 

C → See step   30 

A: Go to next step 

1. Inspect the battery. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 1 .

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

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.
   • Perform "Inspection After Repair" after replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE ENGINE ASSEMBLY 

OK → See step   125 

1. Remove the starter assembly. Refer to REMOVAL [08/2014 - ] .
2. Check for starter pinion gear wear and damage.

   OK

   There is no wear or damage.

NG → See step   127 

OK → See step   126 

1. Inspect the battery. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 1 .

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

1. Inspect the starter assembly. Refer to INSPECTION [08/2014 - ] .

NG → See step   127 

OK → See step   120 

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 higher)*1	Engine compression loss	B

   HINT: 

   • *1: If the cranking speed is fast, there may be compression loss.
   • Perform "Inspection After Repair" after replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

B → CHECK AND REPAIR ENGINE ASSEMBLY 

A: Go to next step 

1. Inspect the battery. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 1 .

NG → CHARGE OR REPLACE BATTERY 

OK: Go to next step 

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.
   • Perform "Inspection After Repair" after replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → CHECK AND REPAIR ENGINE ASSEMBLY 

OK → See step   125 

1. Using a sound scope or screwdriver, check for an injector operating sound while cranking the engine.

   OK

   Fuel injector assembly operating sound is heard.

NG → See step   47 

OK: Go to next step 

1. Check the fuel pressure. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

NG → See step   45 

OK: Go to next step 

1. Check for sparks. Refer to ON-VEHICLE INSPECTION [08/2014 - ] .

NG → See step   41 

OK: Go to next step 

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 assembly 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 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 to maintain fuel pressure after stopping the engine.

   *4: From step 69, perform fuel system troubleshooting C (steps 70 to 74).

B → See step   40 

C → See step   69 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

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

   Standard

   147 kPa (1.5 kgf/cm² , 21 psi) or higher (5 minutes after stopping the engine)

   RESULT
   
   

   Result	Proceed to
   Abnormal	A
   Normal	B*1

   HINT: 

   • If the engine cannot be started, read the values after cranking the engine.
   • *1: from step 69, perform fuel system troubleshooting C (steps 70 to 74).

B → See step   69 

A → See step   141 

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 higher	A
   Less than 4000 ppm	B*1

   HINT: 

   • If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem.
   • *1: From step 69, perform fuel system troubleshooting C (steps 70 to 74).
   • Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   69 

A → See step   123 

1. Inspect the spark plugs. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 3 .

   HINT: 

   • Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders.
   • Perform "Inspection After Repair" after replacing the spark plug. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   128 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Primary / Engine Speed.
5. Start the engine.
6. While running the engine, read the [Engine Speed] value.

   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.

NG → See step   129 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to PROCEDURE - Step 2 .

   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.

NG → See step   130 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to PROCEDURE - Step 3 .

   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 69 and perform troubleshooting for the ignition system (steps 75 to 83).
   • Perform "Inspection After Repair" after replacing the ignition coil assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   131 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
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.

NG → See step   122 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
5. 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 system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 69 and perform fuel system troubleshooting C (steps 70 to 74).

B → See step   122 

A → REPAIR OR REPLACE FUEL LINE 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Primary / Engine Speed.
5. Start the engine.
6. While running the engine, read the [Engine Speed] value.

   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.

NG → See step   121 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to PROCEDURE - Step 10 .

   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.

NG → See step   143 

OK → See step   142 

1. Inspect the mass air flow meter sub-assembly. Refer to INSPECTION [08/2014 - ] .

NG → See step   54 

OK: Go to next step 

1. Check for air leaks in the intake system (vacuum hose disconnection, cracks, damaged gaskets, etc.). Refer to ON-VEHICLE INSPECTION [08/2014 - ] .

   HINT: 

   • If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake air surge tank assembly increases and the air suction noise becomes louder.
   • If Short FT #1, Short FT #2, Long FT #1 and Long FT #2 are largely different from the normal values (differ by higher 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 leaks.

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE INTAKE SYSTEM 

OK: Go to next step 

1. Disconnect the throttle body with motor assembly connector.

   HINT: 

   When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°.

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

   Result	Proceed to
   Engine starts	A
   Engine does not start	B

   HINT: 

   When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .

B → See step   53 

A: Go to next step 

1. Check if carbon is in the air flow passage.

   OK

   No carbon present.

   HINT: 

   Perform "Inspection After Repair" after cleaning the throttle body with motor assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY WITH MOTOR ASSEMBLY 

OK: Go to next step 

1. Operate the VVT system through the Active Test, and check if the VVT system is operating normally.
   1. Perform the Active Test, referring to DTC P0011 inspection procedure (VVT system for intake camshaft). Refer to PROCEDURE - Step 2 .
   2. Perform the Active Test, referring to DTC P0014 inspection procedure (VVT system for exhaust camshaft). Refer to PROCEDURE - Step 2 .
      RESULT
      
      

      Result	Proceed to
      NG	A
      OK	B*1

      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 assembly is stuck at the advanced side, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.
      • *1: From step 69, perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94).

B → See step   69 

A → See step   132 

1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure. Refer to PROCEDURE - Step 3 .

   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 69 and perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94).
   • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   134 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION [08/2014 - ] .

   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 69 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 117), in that order.
   • Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   133 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0115 inspection procedure. Refer to PROCEDURE - Step 3 .

   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 69 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 117), in that order.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Inspect the mass air flow meter sub-assembly. Refer to INSPECTION [08/2014 - ] .

   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 69 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 117), in that order.
   • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   134 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure. Refer to PROCEDURE - Step 3 .

   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 69 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 117), in that order.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1, Long FT #2 and Atmosphere Pressure.
   RESULT
   
   

   Data List Item	Result	Suspected Area	Proceed to
   Long FT #1, Long FT #2	+25% or higher, or less than -25%	Air fuel ratio sensor Heated oxygen sensor Mass air flow meter sub-assembly Fuel injector assembly ECM	A
   Atmosphere Pressure	80 kPa(abs) [600 mmHg(abs)] or less [when altitude is 0 m (0 ft)]
   Both Data List items listed above	Values are other than above	-	B

B → See step   63 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Utility / Learning Value Reset.
5. Confirm the following conditions as instructed on the screen.
   • - Engine switch on (IG)
   • - Engine stopped
   • - Battery voltage 9 V or higher
6. After confirming, select "Next" and initialize the learn value.

   HINT: 

   If a message indicating learned value initialization failure is displayed on the screen, confirm the execution conditions, and perform learned value initialization again.

7. Check if the engine can be started.
   RESULT
   
   

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

B → See step   63 

A: Go to next step 

Courtesy 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 / Gas AF Control / Fuel System Status #1 and Fuel System Status #2.
5. Confirm that Fuel System Status #1 and Fuel System Status #2 are CL.
6. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / AF Lambda B1S1 and AF Lambda B2S1.
7. Confirm that AF Lambda B1S1 and AF Lambda B2S1 are 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 / Gas AF Control / AFS Voltage B1S1 or AFS Voltage B2S1.
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 AFS Voltage B2S1	+12.5%	Air fuel ratio sensor output voltage is below 3.1 V
   	-12.5%	Air fuel ratio sensor output voltage is higher than 3.4 V

   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 69 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 117), in that order.
   • Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   135 

OK: Go to next step 

1. Check if the idle speed is stable after starting the engine.

   OK

   Engine speed is stable.

   HINT: 

   • After replacing the fuel injector assembly or mass air flow meter sub-assembly, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 69 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 117), in that order.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly or mass air flow meter sub-assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   123 

OK → See step   134 

1. Check the fuel pressure. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

NG → See step   68 

OK: Go to next step 

1. Inspect the spark plugs. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - 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 69 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 117), 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 69 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 117), in that order.
   • *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly.
   • Perform "Inspection After Repair" after replacing the spark plug. Refer to INITIALIZATION [08/2014 - ] .

B → See step   136 

C → See step   137 

A: Go to next step 

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 assembly 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 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 to maintain fuel pressure after stopping the engine.

   *4: From step 69, 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 117), in that order.

B → See step   67 

C → See step   69 

A: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

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

   Standard

   147 kPa (1.5 kgf/cm² , 21 psi) or higher (5 minutes after stopping the engine).

   RESULT
   
   

   Result	Proceed to
   Abnormal	A
   Normal	B*1

   HINT: 

   • If the engine cannot be started, read the values after cranking the engine.
   • *1: From step 69, 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 117), in that order.

B → See step   69 

A → See step   141 

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 higher	A
   Less than 4000 ppm	B*1

   HINT: 

   • If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem.
   • *1: From step 69, 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 117), in that order.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   69 

A → See step   123 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
5. 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 system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 69 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 117), in that order.

B → See step   122 

A → REPAIR OR REPLACE FUEL LINE 

1. If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 46, perform fuel system troubleshooting C (steps 70 to 74).
   RESULT
   
   

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Steps 38, 39, 40 and 46	Fuel system troubleshooting C	70 to 74	A

2. If the malfunction could not be identified during the inspection in step 44, perform ignition system troubleshooting (steps 75 to 83).
   RESULT
   
   

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Step 44	Ignition system troubleshooting	75 to 83	B

3. If the malfunction could not be identified during the inspection in steps 53 and 54, 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 53 and 54	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 inspection in steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68, 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 117), in that order.
   RESULT
   
   

   Performed Step	Troubleshooting by System	Procedure	Proceed to
   Steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68	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 117

B → See step   75 

C → See step   84 

D → See step   95 

A: Go to next step 

1. Inspect the fuel injector assemblies. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   123 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to PROCEDURE - Step 10 .

   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.

NG → See step   143 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   73 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the VVT sensor (for intake camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   74 

OK → END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE) 

1. Replace the VVT sensor (for exhaust camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (VVT SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE) 

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.

NG → SECURELY REINSTALL SENSOR 

OK: Go to next step 

1. Check the tightening and installation condition of the VVT sensor (for intake camshaft) bolt.
2. Check the connection of the VVT sensor (for intake camshaft) connector.

   OK

   Sensor is installed correctly.

NG → SECURELY REINSTALL SENSOR (FOR INTAKE CAMSHAFT) 

OK: Go to next step 

1. Check the tightening and installation condition of the VVT sensor (for exhaust camshaft) bolt.
2. Check the connection of the VVT sensor (for exhaust camshaft) connector.

   OK

   Sensor is installed correctly.

NG → SECURELY REINSTALL SENSOR (FOR EXHAUST CAMSHAFT) 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to PROCEDURE - Step 3 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to PROCEDURE - Step 2 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0365 inspection procedure. Refer to PROCEDURE - Step 2 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   82 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the VVT sensor (for intake camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   83 

OK → END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE) 

1. Replace the VVT sensor (for exhaust camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (VVT SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Primary / ISC Learning Value.
5. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches off.
   RESULT
   
   

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

B → See step   86 

A: Go to next step 

1. Check the compression. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 11 .

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → CHECK AND REPAIR ENGINE ASSEMBLY 

OK → See step   138 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   133 

OK: Go to next step 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

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

   Standard

   Vehicle State	Specified Condition
   Cranking engine	380 (3.9 kgf/cm2 , 55 psi) to 420 kPa (4.3 kgf/cm2 , 61 psi)
   5 minutes after stopping engine	147 kPa (1.5 kgf/cm2 , 21 psi) or higher

NG → See step   93 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1 and Long FT #2.
   RESULT
   
   

   Data List Item	Result	Suspected Area	Proceed to
   Long FT #1, Long FT #2	-15 to +15%	Wire harness or connector Fuel	A
   	+15% or higher, or less than -15%	Fuel injector assembly	B

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   123 

A: Go to next step 

1. Check if the idle speed after starting the engine is currently stable and has always been stable in the past.
   RESULT
   
   

   Problem Symptom	Suspected Area	Proceed to
   Current unstable idle speed or history of unstable idle speed	Crankshaft position sensor system	A
   All current and past idle 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.

B → REPLACE FUEL 

A: Go to next step 

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.

NG → SECURELY REINSTALL SENSOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to PROCEDURE - Step 3 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
5. 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.

B → See step   94 

A → REPAIR OR REPLACE FUEL LINE 

1. Inspect the fuel pump. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   • Make sure there is no foreign matter such as iron particles on the fuel pump 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.
   • Perform "Inspection After Repair" after replacing the fuel pump. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   139 

OK → See step   141 

HINT: 

For the fuel pressure inspection, refer to the following procedures. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 2 .

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

   Standard

   147 kPa (1.5 kgf/cm² , 21 psi) or higher (5 minutes after stopping the engine).

   HINT: 

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

NG → See step   101 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / Gas AF Control / Long FT #1 and Long FT #2.
   RESULT
   
   

   Data List Item	Result	Suspected Area	Proceed to
   Long FT #1, Long FT #2	-15 to +15%	Wire harness or connector Fuel	A
   	+15% or higher, or less than -15%	Fuel injector assembly	B

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   123 

A: Go to next step 

1. Check if the idle speed after starting the engine is currently stable and has always been stable in the past.
   RESULT
   
   

   Problem Symptom	Suspected Area	Proceed to
   Current unstable idle speed or history of unstable idle speed	Crankshaft position sensor system	A
   All current and past idle 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.

B → REPLACE FUEL 

A: Go to next step 

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.

NG → SECURELY REINSTALL SENSOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to PROCEDURE - Step 3 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
5. 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.

B → See step   102 

A → REPAIR OR REPLACE FUEL LINE 

1. Inspect the fuel pump. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   • Make sure there is no foreign matter such as iron particles on the fuel pump 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.
   • Perform "Inspection After Repair" after replacing the fuel pump. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   139 

OK: Go to next step 

1. Disconnect the fuel vapor feed hose assembly (on the canister side) of the purge VSV.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Fuel Vapor Feed Hose Assembly (to Canister)
   *2	Purge VSV Connector
   *3	Purge VSV

2. Start the engine.
3. Idle the engine.
4. Disconnect the connector of the purge VSV.
5. Check if air flows through the purge VSV.

   OK

   Air does not flow

   HINT: 

   When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .

NG → See step   140 

OK: Go to next step 

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 higher	A
   Less than 4000 ppm	B

   HINT: 

   • If the concentration is 4000 ppm or higher, a fuel injector assembly may have a sealing problem.
   • Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to INITIALIZATION [08/2014 - ] .

B → See step   105 

A → See step   123 

1. Check if carbon is on the intake valves.
   RESULT
   
   

   Result	Proceed to
   Carbon present	A
   No carbon present	B

B → See step   106 

A → CLEAN INTAKE VALVE 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Data List / ISC Learning Value.
5. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches off.
   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

B → See step   108 

A: Go to next step 

1. Check the compression. Refer to ON-VEHICLE INSPECTION [08/2014 - ] - Step 11 .

   HINT: 

   Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to INITIALIZATION [08/2014 - ] .

NG → CHECK AND REPAIR ENGINE ASSEMBLY 

OK → See step   138 

1. Inspect the engine coolant temperature sensor. Refer to INSPECTION [08/2014 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to INITIALIZATION [08/2014 - ] .

NG → See step   133 

OK: Go to next step 

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.

NG → SECURELY REINSTALL SENSOR 

OK: Go to next step 

1. Check the tightening and installation condition of the VVT sensor (for intake camshaft) bolt.
2. Check the connection of the VVT sensor (for intake camshaft) connector.

   OK

   Sensor is installed correctly.

NG → SECURELY REINSTALL SENSOR (FOR INTAKE CAMSHAFT) 

OK: Go to next step 

1. Check the tightening and installation condition of the VVT sensor (for exhaust camshaft) bolt.
2. Check the connection of the VVT sensor (for exhaust camshaft) connector.

   OK

   Sensor is installed correctly.

NG → SECURELY REINSTALL SENSOR (FOR EXHAUST CAMSHAFT) 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to PROCEDURE - Step 3 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to PROCEDURE - Step 2 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Check the harnesses and connectors, referring to DTC P0365 inspection procedure. Refer to PROCEDURE - Step 2 .

   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.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the crankshaft position sensor. Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   116 

OK → END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE) 

1. Replace the VVT sensor (for intake camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   117 

OK → END (VVT SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE) 

1. Replace the VVT sensor (for exhaust camshaft). Refer to REMOVAL [08/2014 - ] .
2. Check the engine start operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   142 

OK → END (VVT SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)