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SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P0010, P0020

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

The electric VVT changes the valve timing using a motor. In comparison to a conventional hydraulic VVT, the valve timing range is greater and the VVT operates even when the engine speed is low or the engine is cold. As a result, it is possible to increase engine output and mileage.

The camshaft timing control motor is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM.

Part and Terminal Name Function
Camshaft timing control motor Through its electric motor, operates camshaft timing gear assembly. Interior driver (EDU) detects and performs malfunction diagnosis of motor control, motor speed and rotation direction.
Camshaft timing gear assembly Changes valve timing by rotating timing chain sprocket.
ECM Outputs target speed and motor rotation direction in response to driving conditions.
+B Power supply (when engine switch on (IG), 12 V or higher)
PGND Power supply ground
VTP Inputs motor activation signal from ECM.
VTS Outputs actual motor speed.
VTD Outputs actual rotation direction.
VTM

Outputs malfunction diagnosis results as a duty ratio.


  • Open circuit in VTP and VTM

  • Normal

  • Internal malfunction in driver

  • Malfunction in motor rotation sensor of driver
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0010 Camshaft Position "A" Actuator Circuit (Bank 1)

One of the following conditions is met for 3 seconds or more (1 trip detection logic).


  • Camshaft timing control motor (bank 1) IC has overheated.

  • Open in camshaft timing control motor (bank 1) circuit.

  • Camshaft timing control motor (bank 1) has overcurrent.

  • Camshaft timing control motor (bank 1)

  • Camshaft timing gear assembly (bank 1)

 Comes on DTC stored
P0020 Camshaft Position "A" Actuator Circuit (Bank 2)

One of the following conditions is met for 3 seconds or more (1 trip detection logic).


  • Camshaft timing control motor (bank 2) IC has overheated.

  • Open in camshaft timing control motor (bank 2) circuit.

  • Camshaft timing control motor (bank 2) has overcurrent.

  • Camshaft timing control motor (bank 2)

  • Camshaft timing gear assembly (bank 2)

 Comes on DTC stored
Table 1. Symptoms and Fail-safe Operation During Camshaft Control Motor Malfunction
Vehicle Condition Fail-Safe

  • Deterioration of driving performance as result of engine combustion degradation

  • Engine output deficiency

  • Power to camshaft timing control motor is cut

  • Valve timing of bank that is operating normally is fixed at maximum retard angle
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MONITOR DESCRIPTION

These DTCs are output when an IC overheat malfunction or an overcurrent malfunction is detected in the intake side camshaft timing control motor. The camshaft timing control motor is equipped with a self diagnostic function, which is used to output diagnosis signals (VTM) to the ECM. If the ECM receives a motor driver interior malfunction signal, a DTC is output immediately (1 trip detection logic).

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CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

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

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.

  7. Idle the engine for 10 seconds.

  8. Enter the following menus: Powertrain / Engine / Trouble Codes.

  9. Read the pending DTCs.

    Tip:

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  11. Input the DTC: P0010 or P0020.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

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CAUTION / NOTICE / HINT

Tip:

  • 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.

  • Read freeze frame data using the GTS. 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


  1. *1 Camshaft Timing Gear Assembly *2 Eccentric Shaft *a Spline
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    INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (BANK 1 OR BANK 2)


    1. Turn the engine switch off.

    2. Remove the camshaft timing control motor.

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    3. Check if the camshaft timing gear assembly eccentric shaft rotates smoothly.

      OK
      Rotates smoothly.
      Tip:

      Perform "Inspection After Repair" after repairing or replacing the camshaft timing gear assembly, or removing or replacing the camshaft timing control motor.

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      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE CAMSHAFT TIMING CONTROL MOTOR (BANK 1 OR BANK 2)Click here

    • NG

      REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (BANK 1 OR BANK 2)Click here