DTC P0010 Camshaft Position "A" Actuator Circuit (Bank 1); DTC P0020 Camshaft Position "A" Actuator Circuit (Bank 2): Wiring Diagram

Fig 1: Wiring Diagram - Camshaft Position "A" Actuator Circuit (Bank 1)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

• If DTC P0010 is displayed, check the right bank VVT system.
• Bank 1 refers to the bank that includes cylinder No. 1.
• If DTC P0020 is displayed, check the left bank VVT system.
• Bank 2 refers to the bank that does not include cylinder No. 1.
• 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 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. PERFORM ACTIVE TEST BY CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Put the engine in inspection mode (See INSPECTION MODE PROCEDURE  ).
   4. Warm up the engine.
   5. On the tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1 or VVT CTRL B2.
   6. Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

      OK 

      TESTER OPERATION SPECIFIED CONDITION CHART
      
      

      Tester Operation	Specified Condition
      OCV OFF	Normal engine speed
      OCV ON	Engine idles roughly or stalls (soon after OCV switched from OFF to ON)

   OK: CHECK FOR INTERMITTENT PROBLEMS 

   NG: GO TO NEXT STEP 

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE CAMSHAFT) 
   1. Disconnect the V6 or V7 OCV connector.
   2. While idling, check the waveform between the terminals of the V6 or V7 OCV connector using an oscilloscope.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      V7-1 (+) - V7-2 (-)	Correct waveform is as shown
      V6-1 (+) - V6-2 (-)	Correct waveform is as shown

   3. Reconnect the OCV connector.
      Fig 2: Inspecting Camshaft Timing Oil Control Valve Assembly (OCV For Intake Camshaft)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

   NG: GO TO NEXT STEP 

3. INSPECT HARNESS AND CONNECTOR (OCV - HV CONTROL ECU) 
   1. Disconnect the V6 or V7 OCV connector.
   2. Disconnect the H31 HV Control ECU connector.
   3. Check the resistance between the wire harness side connectors.

      Standard resistance (Check for open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      OCV (V7-1) - OC1+ (H31-16)	Below 1 Ω
      OCV (V7-2) - OC1- (H31-15)	Below 1 Ω
      OCV (V6-1) - OC2+ (H31-14)	Below 1 Ω
      OCV (V6-2) - OC2- (H31-13)	Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      OCV (V7-1) or OC1+ (H31-16) - Body ground	10 kΩ or higher
      OCV (V7-2) or OC1- (H31-15) - Body ground	10 kΩ or higher
      OCV (V6-1) or OC2+ (H31-14) - Body ground	10 kΩ or higher
      OCV (V6-2) or OC2- (H31-13) - Body ground	10 kΩ or higher

   4. Reconnect the OCV connector.
   5. Reconnect the ECM connector.
      Fig 3: Identifying H31 HV Control ECU Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE HV CONTROL ECU 

   OK: REPAIR OR REPLACE HARNESS AND CONNECTOR