SFI SYSTEM, Diagnostic DTC:P0010, P0020

DTC Code DTC Name
P0010 Camshaft Position "A" Actuator Circuit (Bank 1)
P0020 Camshaft Position "A" Actuator Circuit (Bank 2)

DESCRIPTION

The Variable Valve Timing (VVT) system includes the ECM, camshaft timing oil control valve assembly and VVT controller. The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as intake air volume, throttle valve position and engine coolant temperature. The ECM controls the camshaft timing oil control valve assembly, based on the signals transmitted from several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the camshaft timing oil control valve assembly. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM.

A01CEHUE01
DTC No. DTC Detection Condition Trouble Area
P0010

Open or short in camshaft timing oil control valve assembly for intake camshaft (bank 1) circuit

(1 trip detection logic)

  • Open or short in camshaft timing oil control valve assembly for intake camshaft (bank 1) circuit

  • Camshaft timing oil control valve assembly for intake camshaft (bank 1)

  • ECM
P0020

Open or short in camshaft timing oil control valve assembly for intake camshaft (bank 2) circuit

(1 trip detection logic)

  • Open or short in camshaft timing oil control valve assembly for intake camshaft (bank 2) circuit

  • Camshaft timing oil control valve assembly for intake camshaft (bank 2)

  • ECM

WIRING DIAGRAM

A01CCIHE01

INSPECTION PROCEDURE

Tech Tips


  • If DTC P0010 is displayed, check the intake camshaft circuit for the right bank VVT system (bank 1).

  • Bank 1 refers to the bank that includes cylinder No. 1.

  • If DTC P0020 is displayed, check the intake camshaft circuit for the left bank VVT system (bank 2).

  • 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 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.

PROCEDURE


  1. CHECK DTC (DTC P0010 OR P0020)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the tester on.

    3. Clear the DTC after recording the freeze frame data and DTC.

    4. Turn the engine switch off.

    5. Allow the engine to idle and check the DTC.

    6. Check that P0010 or P0020 is output.

      Result
      Result Proceed to
      DTC P0010 is output A
      DTC P0020 is output B

    B

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OPERATION) Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OPERATION)


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine and turn the tester on.

    3. Warm up the engine.

    4. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 1).

    5. Check the engine speed while operating the camshaft timing oil control valve assembly using the intelligent tester.

      OK
      Tester Operation Specified Condition
      Camshaft timing oil control valve assembly OFF Normal engine speed
      Camshaft timing oil control valve assembly ON

      Engine idles roughly or stalls

      (soon after camshaft timing oil control valve assembly switched from OFF to ON)

    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OPERATION)


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine and turn the tester on.

    3. Warm up the engine.

    4. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 2). Check the engine speed while operating the camshaft timing oil control valve assembly using the intelligent tester.

      OK
      Tester Operation Specified Condition
      Camshaft timing oil control valve assembly OFF Normal engine speed
      Camshaft timing oil control valve assembly ON

      Engine idles roughly or stalls

      (soon after camshaft timing oil control valve assembly switched from OFF to ON)

    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)


    1. A01CD1KE03

      Remove the camshaft timing oil control valve assembly.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Conditions
      1 - 2 20°C (68°F) 6.9 to 7.9 Ω
    3. A01CG4KE05

      Connect the positive battery terminal to terminal 1 and connect the negative battery terminal to terminal 2. Check the valve operation.

      OK
      Valve moves quickly.

    4. Reinstall the camshaft timing oil control valve assembly.


    NG

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

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


    1. Disconnect the camshaft timing oil control valve assembly connector.

      A01CBEUE01

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      D39-1 (OC1+) - D1-58 (OC1+) Always Below 1 Ω
      D39-2 (OC1-) - D1-57 (OC1-) Always Below 1 Ω
      D18-1 (OC2+) - D1-52 (OC2+) Always Below 1 Ω
      D18-2 (OC2-) - D1-51 (OC2-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D39-1 (OC1+) or D1-58 (OC1+) - Body ground Always 10 kΩ or higher
      D39-2 (OC1-) or D1-57 (OC1-) - Body ground Always 10 kΩ or higher
      D18-1 (OC2+) or D1-52 (OC2+) - Body ground Always 10 kΩ or higher
      D18-2 (OC2-) or D1-51 (OC2-) - Body ground Always 10 kΩ or higher

    4. Reconnect the camshaft timing oil control valve assembly connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM)

    OK

    REPLACE ECM Click here