Inspection Procedure

HINT:

Read freeze frame data using a Techstream. Freeze frame data record 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 C18 Camshaft Position (CMP) sensor connector.
   Fig 1: Identifying Camshaft Position Sensor Connector
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance between terminals 1 and 2.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      1 - 2	1850 to 2450 Ω at 20°C (68°F)

   3. Reconnect the CMP sensor connector.

   NG: REPLACE CAMSHAFT POSITION SENSOR (See  REMOVAL   ) 

   OK: Go to next step 

2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) 
   Fig 2: Identifying Harness And Connector (Camshaft Position Sensor - ECM)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the C18 CMP sensor connector.
   2. Disconnect the C20 ECM connector.
   3. Check the resistance.

      Standard resistance (Check for open) 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      G2+ (C18-1) - G2+ (C20-99)	Below 1 Ω
      NE- (C18-2) - NE- (C20-121)

      Standard resistance (Check for short) 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART
      
      

      Tester Connections	Specified Conditions
      G2+ (C18-1) or G2+ (C20-99) - Body ground	10 kΩ or higher
      NE- (C18-2) or NE- (C20-121) - Body ground

   4. Reconnect the ECM connector.
   5. Reconnect the CMP sensor connector.

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step 

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

      OK: 

      Sensor is installed correctly. 

      Fig 3: Identifying CMP Sensor Installation

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: SECURELY REINSTALL SENSOR (See  REMOVAL   ) 

   OK: Go to next step 

4. CHECK VALVE TIMING (See  INSPECTION PROCEDURE   ) 

   NG: ADJUST VALVE TIMING  (See REMOVAL )

   OK: Go to next step 

5. CHECK CAMSHAFT (TIMING ROTOR) 
   1. Check the timing rotor of the camshaft.

      OK: 

      Camshaft timing rotor does not have any cracks or deformation. 

   NG: REPLACE CAMSHAFT  (See REMOVAL )

   OK: Go to next step 

6. REPLACE CAMSHAFT POSITION SENSOR 
   1. Replace the camshaft (See REMOVAL  ).
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the tester ON.
   4. Clear DTCs (See DTC CHECK/CLEAR  ).
   5. Start the engine.
   6. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.
   7. Read DTCs.

      Result 

      RESULT CHART
      
      

      Display (DTC Output)	Proceed To
      No output	A
      P0340	B

      HINT:

      If the engine does not start, replace the ECM.

   B: REPLACE ECM (See  REMOVAL   ) 

   A: END