Inspection Procedure

HINT:

• If no problem is found through this diagnostic troubleshooting procedure, troubleshooting the engine mechanical systems.
• Check the engine speed. The engine speed can be checked by using the intelligent tester. To check, follow the operation below:
  1. Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).
  2. Connect the intelligent tester to the DLC3.
  3. Turn the tester ON.
  4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ENGINE SPD.

     The engine speed may be indicated as zero despite the engine revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor output voltage is insufficient.

• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (see FREEZE FRAME DATA ).

1. READ VALUE USING INTELLIGENT TESTER (ENGINE SPD) 
   1. Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).
   2. Connect the intelligent tester to the DLC3.
   3. Turn the power switch ON (IG).
   4. Turn the tester ON.
   5. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ENGINE SPD.
   6. Read the values displayed on the tester while the engine is running.

      Standard: 

      Correct values are displayed. 

      HINT:

      • To check the engine speed change, display the graph on the tester.
      • If the engine does not start, check the engine speed while cranking.
      • If the engine speed indicated on the tester remains zero (0), there may be an open or short in the Crankshaft Position (CKP) sensor circuit.

   OK: CHECK FOR INTERMITTENT PROBLEMS 

   NG: GO TO Next Step 

2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) 
   1. Disconnect the E47 CKP sensor connector.
   2. Measure the resistance between terminals 1 and 2.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      1 - 2	Cold	985 to 1,600 Ω
      1 - 2	Hot	1,265 to 1,890 Ω

      HINT:

      The terms cold and hot refer to the temperature of the sensor. Cold means approximately -10 to 50°C (14 to 122°F). Hot means approximately 50 to 100°C (122 to 212°F).

   3. Reconnect the CKP sensor connector.
      Fig 1: Identifying E47 CKP Sensor Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE CRANKSHAFT POSITION SENSOR 

   OK: GO TO Next Step 

3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) 
   1. Disconnect the E47 CKP sensor connector.
   2. Disconnect the E83 ECM connector.
   3. Measure the resistance.

      Standard resistance (Check for open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E47-1 - NE+ (E83-69)	Below 1 Ω
      E47-2 - NE- (E83-68)	Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      E47-1 or NE+ (E83-69) - Body ground	10 kΩ or higher
      E47-2 or NE- (E83-68) - Body ground	10 kΩ or higher

   4. Reconnect the ECM connector.
   5. Reconnect the CKP sensor connector.
      Fig 2: Identifying E47 CKP Sensor Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: GO TO Next Step 

4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) 
   1. Check the CKP sensor installation.

      OK: 

      Sensor is installed correctly. 

      Fig 3: Identifying Proper Installation Position Of Crankshaft Position Sensor

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: SECURELY REINSTALL CRANK POSITION SENSOR 

   OK: GO TO Next Step 

5. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) 
   1. Check the teeth of the sensor plate.

      OK: 

      Sensor plate does not have any cracks or deformation. 

   NG: REPLACE CRANKSHAFT 

   OK: GO TO Next Step 

6. REPLACE CRANKSHAFT POSITION SENSOR 
7. CHECK WHETHER DTC OUTPUT RECURS 
   1. Clear DTCs (see DTC CHECK/CLEAR ).
   2. Put the engine in inspection mode (see INSPECTION MODE PROCEDURE ).
   3. Connect the intelligent tester to the DLC3.
   4. Turn the tester ON.
   5. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   6. Read DTCs.

      Result 

      RESULT CHART
      
      

      Display (DTC Output)	Proceed to
      No output	A
      P0335	B

      HINT:

      If the engine does not start, replace the ECM.

   B: REPLACE ECM 

   A: END