SFI SYSTEM (w/o EGR 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.

A01NF9UE01
DTC No. DTC Detection Condition Trouble Area
P0010

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

(1 trip detection logic)

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

  • Camshaft timing oil control valve assembly (bank 1)

  • ECM
P0020

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

(1 trip detection logic)

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

  • Camshaft timing oil control valve assembly (bank 2)

  • ECM

WIRING DIAGRAM

A01NH5HE19

INSPECTION PROCEDURE

Tech Tips


  • If DTC P0010 is displayed, check 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 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 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.

PROCEDURE


  1. CHECK DTC (DTC P0010 OR P0020)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs.

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

    B

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE VVT LINEAR (BANK 2)) Click here

    A

  2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE VVT LINEAR (BANK 1))


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Put the engine in inspection mode Click here.

    5. Start the engine.

    6. Warm up the engine.

    7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).

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

      OK
      Tester Operation Engine Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls

      Tech Tips

      Test not possible with shift lever in P position during charge control, move shift lever to N to perform test.


    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE VVT LINEAR (BANK 2))


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Put the engine in inspection mode Click here.

    5. Start the engine.

    6. Warm up the engine.

    7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 2).

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

      OK
      Tester Operation Engine Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls

      Tech Tips

      Test not possible with shift lever in P position during charge control, move shift lever to N to perform test.


    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY


    1. Inspect the camshaft timing oil control valve assembly Click here.


    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.

    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
      D24-1 - D1-10 (OC1+) Always Below 1 Ω
      D24-2 - D1-11 (OC1-) Always Below 1 Ω
      D25-1 - D1-8 (OC2+) Always Below 1 Ω
      D25-2 - D1-9 (OC2-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D24-1 or D1-10 (OC1+) - Body ground Always 10 kΩ or higher
      D24-2 or D1-11 (OC1-) - Body ground Always 10 kΩ or higher
      D25-1 or D1-8 (OC2+) - Body ground Always 10 kΩ or higher
      D25-2 or D1-9 (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