SFI SYSTEM, Diagnostic DTC:P0013, P0023

DTC Code DTC Name
P0013 Camshaft Position "B" Actuator Circuit / Open (Bank 1)
P0023 Camshaft Position "B" Actuator Circuit / Open (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 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 exhaust valve timing is verified by the ECM.

A017DG0E03
DTC No. DTC Detection Condition Trouble Area
P0013

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

(1 trip detection logic)

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

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

  • ECM
P0023

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

(1 trip detection logic)

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

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

  • ECM

WIRING DIAGRAM

A017FJJE27

INSPECTION PROCEDURE

Tech Tips


  • If DTC P0013 is displayed, check the exhaust camshaft circuit for the bank 1 VVT system.

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

    *: The No. 1 cylinder is the cylinder which is farthest from the transmission.

  • Bank 2 refers to the bank that does not include the No. 1 cylinder.

  • If DTC P0023 is displayed, check the exhaust camshaft circuit for the bank 2 VVT system.

  • 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. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE OIL CONTROL VALVE FOR EXHAUST CAMSHAFT)


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine and turn the tester on.

    3. Enter the following menus: Powertrain/ Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2).

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

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

    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY


    1. A017CV1E01

      Remove the camshaft timing oil control valve assembly (for exhaust camshaft).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 6.9 to 7.9 Ω
      Text in Illustration
      *a

      Component without harness connected

      (Camshaft Timing Oil Control Valve Assembly (for Exhaust Camshaft))
    3. A017FA0E01

      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 (for exhaust camshaft).


    NG

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

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


    1. Disconnect the exhaust 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)
      Bank 1
      Tester Connection Condition Specified Condition
      B49-21 (OE1+) - B43-1 Always Below 1 Ω
      B49-22 (OE1-) - B43-2 Always Below 1 Ω
      Bank 2
      Tester Connection Condition Specified Condition
      B50-21 (OE2+) - B40-1 Always Below 1 Ω
      B50-22 (OE2-) - B40-2 Always Below 1 Ω
      Standard resistance (Check for short)
      Bank 1
      Tester Connection Condition Specified Condition
      B49-21 (OE1+) or B43-1 - Body ground Always 10 kΩ or higher
      B49-22 (OE1-) or B43-2 - Body ground Always 10 kΩ or higher
      Bank 2
      Tester Connection Condition Specified Condition
      B50-21 (OE2+) or B40-1 - Body ground Always 10 kΩ or higher
      B50-22 (OE2-) or B40-2 - Body ground Always 10 kΩ or higher

    4. Reconnect the ECM connector.

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


    NG

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

    OK

    REPLACE ECM Click here