Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE) 
   1. Disconnect the C1 Camshaft Position (CMP) sensor connector.
   2. Measure the resistance between terminals 1 and 2.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      1 - 2	1,630 to 2,740 Ω at cold
      1 - 2	2,065 to 3,225 Ω at hot

      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).

   NG : REPLACE CAMSHAFT POSITION SENSOR 

   Fig 1: Identifying Camshaft Position Sensor Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : GO TO NEXT STEP 

2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) 
   1. Disconnect the C1 CMP sensor connector.
      Fig 2: Identifying ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Disconnect the E3 ECM connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance (Check for open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      G2+ (C1-1) - G2+ (E3-26)	Below 1 Ω
      NE- (C1-2) - NE- (E3-34)	Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      G2+ (C1-1) or G2+ (E3-26) - Body ground	10 kΩ or higher
      NE- (C1-2) or NE- (E3-34) - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 3: Identifying ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : GO TO NEXT STEP 

3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) 
   1. Check the CMP sensor installation.

      OK: Sensor is installed correctly. 

   NG : SECURELY REINSTALL SENSOR 

   Fig 4: Inspecting CMP Sensor Installation Clearance

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : GO TO NEXT STEP 

4. CHECK CAMSHAFT (TEETH OF PLATE) 
   1. Check the teeth of the camshaft.

      OK: Camshaft teeth do not have any cracks or deformation. 

   NG : REPLACE CAMSHAFT 

   OK : REPLACE ECM