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SFI SYSTEM, Diagnostic DTC:P0013, P0023

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DTC Code DTC Name
P0013 Camshaft Position "B" Actuator Circuit / Open (Bank 1)
P0023 Camshaft Position "B" Actuator Circuit / Open (Bank 2)
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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 the 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 by several sensors. The VVT controller regulates the exhaust 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 exhaust 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.

DTC No. DTC Detection Condition Trouble Area
P0013 Open or short in the camshaft timing oil control valve assembly (for exhaust side of bank 1) circuit (1 trip detection logic).

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

  • Camshaft timing oil control valve assembly (for exhaust side of bank 1)

  • ECM
P0023 Open or short in camshaft timing oil control valve assembly (for exhaust camshaft of bank 2) circuit (1 trip detection logic).

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

  • Camshaft timing oil control valve assembly (for exhaust side of bank 2)

  • ECM
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Tip:

  • If DTC P0013 is output, check the exhaust camshaft circuit for the right bank VVT system (bank 1).

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

  • If DTC P0023 is output, check the exhaust 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 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.

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PROCEDURE


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    CHECK DTC (DTC P0013 OR P0023)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

    5. Read the DTCs.

      Table 1. Result
      Result Proceed to
      DTC P0013 is output A
      DTC P0023 is output B

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


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Turn the tester on.

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

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

      OK
      Tester Operation Engine Condition
      0% (OFF) Normal engine speed
      127% (ON) Engine idles roughly or stalls soon after camshaft timing oil control valve assembly switched from off to on

  3. Click here

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


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Turn the tester on.

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

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

      OK
      Tester Operation Engine Condition
      0% (OFF) Normal engine speed
      127% (ON) Engine idles roughly or stalls soon after camshaft timing oil control valve assembly switched from off to on

  4. Click here

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST SIDE OF BANK 1, 2)


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


  5. Click here

    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
      C17-1 - C35-21 (OE1+) Always Below 1 Ω
      C17-2 - C35-22 (OE1-) Always Below 1 Ω
      C19-1 - C34-21 (OE2+) Always Below 1 Ω
      C19-2 - C34-22 (OE2-) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C17-1 or C35-21 (OE1+) - Body ground Always 10 kΩ or higher
      C17-2 or C35-22 (OE1-) - Body ground Always 10 kΩ or higher
      C19-1 or C34-21 (OE2+) - Body ground Always 10 kΩ or higher
      C19-2 or C34-22 (OE2-) - Body ground Always 10 kΩ or higher

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

    5. Reconnect the ECM connector.


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    CHECK FOR INTERMITTENT PROBLEMSClick here

  7. Click here

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST SIDE OF BANK 1，2)Click here

  8. Click here

    REPLACE ECMClick here

  9. Click here

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