SFI SYSTEM (w/ Electronic Throttle Control System), Diagnostic DTC:P0010

DTC Code DTC Name
P0010 Camshaft Position "A" Actuator Circuit (Bank 1)

DESCRIPTION

The Variable Valve Timing (VVT) system includes the ECM, Camshaft Timing Oil Control Valve (OCV) and VVT controller. The ECM sends a target "duty-cycle" control signal to the OCV. This control signal, applied to the OCV, regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed based on engine operating conditions such as intake air volume, throttle position and engine coolant temperature.

The ECM controls the OCV based on the signals from several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. As a result, the relative position between the camshaft and crankshaft is optimized, engine torque and fuel economy improve, and the exhaust emissions drop. The ECM detects actual valve timing using signals from the camshaft and crankshaft position sensors. The ECM performs feedback control and verifies target valve timing.

A0136ZEE01
DTC No. DTC Detection Condition Trouble Area
P0010 Open or short in Camshaft Timing Oil Control Valve (OCV) circuit (3 trip detection logic)

  • Open or short in camshaft timing oil control valve circuit

  • Camshaft timing oil control valve

  • ECM

Tech Tips


  • The IC built into the ECM detects an open or short in the camshaft timing oil control valve circuit.

  • This DTC is detected when the engine idles for approximately 15 seconds.

WIRING DIAGRAM

A0138GYE01

INSPECTION PROCEDURE

Note

After replace the ECM, perform electronic throttle learning Click here.

PROCEDURE


  1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OCV OPERATION)


    1. Start the engine and warm it up.

    2. Turn the ignition switch OFF.

    3. Connect the intelligent tester to the DLC3.

    4. Start the engine and turn the intelligent tester ON.

    5. Select the following menu items: Powertrain / Engine and ECT / Active Test / VVT Control (Bank 1).

    6. Check the engine speed when operating the camshaft timing oil control valve (OCV) using the intelligent tester.

      Standard
      Tester Operation Specified Condition Proceed To
      OCV is OFF to ON Engine changes from steady idling to rough idling or engine stalling A
      OCV is OFF to ON No change in engine speed B

    A

    GO TO "CHECK FOR INTERMITTENT PROBLEMS"

    B

  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE


    1. A01390F

      Disconnect the B12 camshaft timing oil control valve connector.

    2. Measure the resistance between the terminals of the camshaft timing oil control valve.

      Standard resistance
      6.9 to 7.9 Ω at 20°C (68°F)

    NG

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE

    OK

  3. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE - ECM)


    1. A013647E01

      Disconnect the B12 OCV connector.

    2. Disconnect the B26 ECM connector.

    3. Remove the engine room R/B.

    4. Remove the engine room R/B lower cover.

    5. Measure the resistance.

      Standard resistance (check for open)
      Tester Connection Specified Condition
      OCV- (B12-2) - OCV- (B26-1) Below 1 Ω
      OCV+ (B12-1) - Engine room R/B (1C-5) Below 1 Ω
      Standard resistance (check for short)
      Tester Connection Specified Condition
      OCV- (B12-2) or OCV- (B26-1) - Body ground 10 kΩ or higher
      OCV+ (B12-1) - Engine room R/B (1C-5) - Body ground 10 kΩ or higher

    6. Reconnect the OCV connector.

    7. Reconnect the ECM connector.

    8. Reinstall the engine room R/B.


    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    REPLACE ECM