DTC    P0011    Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

DTC    P0012    Camshaft Position "A" - Timing Over-Retarded (Bank 1)

for Preparation Click here


DESCRIPTION

HINT:
  1. These DTCs relate to the Camshaft Timing Oil Control Valve (OCV). If DTC P0011 or P0012 is present, check the Variable Valve Timing (VVT) system.

The VVT system includes the ECM, OCV and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure applied 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 OCV based on the signals transmitted by several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. 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 perform feedback control. This is how the target intake valve timing is verified by the ECM.

A209140E01


DTC No.
DTC Detection Condition
Trouble Area
P0011
Relative angle of the camshaft and crankshaft deviates from the standard angle at the advanced VVT side (1-trip detection logic)
  1. Valve timing
  2. Camshaft timing oil control valve (OCV)
  3. OCV Filter
  4. Camshaft timing sprocket assembly
  5. ECM
P0012
Relative angle of the camshaft and crankshaft deviates from the standard angle at the retarded VVT side (2-trip detection logic)
  1. Valve timing
  2. Camshaft timing oil control valve (OCV)
  3. OCV Filter
  4. Camshaft timing sprocket assembly
  5. ECM

WIRING DIAGRAM

Refer to DTC P0010 (Click here).

INSPECTION PROCEDURE

NOTICE:
DTC P0011 or P0012 may be set when foreign object in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

HINT:
Read freeze frame data using an 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.

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0011 OR P0012)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

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

  1. Read DTCs.

    Result 
    Result
    		Proceed to
    P0011 or P0012
    		A
    P0011 or P0012, and other DTCs
    		B

    HINT:
    If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first.



B
GO TO DTC CHART (Click here)
A


2.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OCV OPERATION)

  1. Start the engine and warm it up.

  1. Turn the ignition switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank1).

  1. Check the engine speed when operating the OCV using the intelligent tester.


Result 
Result
Proceed To
Engine changes from steady idling to rough idling or engine stalling
A
No change in engine speed
B


B
Go to step 5
A


3.CHECK VALVE TIMING
A199329E01

  1. Check for looseness or a jumped tooth in the timing chain.
    Text in Illustration 
    *1
    		Alignment mark
    *2
    		Alignment mark

    OK:
    The alignment marks of the camshaft timing sprocket and crankshaft pulley align.



NG
ADJUST VALVE TIMING (Click here)
OK


4.CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

  1. Clear the DTC using the intelligent tester.

  1. Start the engine and warm it up.

  1. Drive the vehicle for 20 minutes or more.

  1. Connect the intelligent tester to the DLC3.

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

  1. Read DTCs.

    OK:
    No DTC output.

    HINT:
    DTC P0011 or P0012 may be set when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.



NG
Go to step 5
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)  

5.INSPECT ECM (OCV SIGNAL)


    A120345E03

  1. Disconnect the OCV connector.

  1. While running the engine at idle, check the waveform between the terminals of the OCV connector using the intelligent tester.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C7-1 (OC1+) - C7-2 (OC1-)
    		Idling
    		Correct waveform is as shown

  1. Reconnect the OCV connector.



NG
Go to step 12
OK


6.INSPECT OIL CONTROL VALVE FILTER
A200834

  1. Remove the OCV filter.

  1. Check that the OCV filter is not clogged.

    OK:
    The filter is not clogged.

  1. Reinstall the OCV filter.



NG
CLEAN OIL CONTROL VALVE FILTER
OK


7.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
A202815E01

  1. Remove the OCV.

  1. Apply battery voltage to terminals of the OCV.

  1. Check the valve operation.

    OK:
    Valve moves quickly.

  1. Reinstall the OCV.

Result 
Result
Proceed to
Outside standard range
A
Within standard range
B


B
Go to step 9
A


8.REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

  1. Replace the OCV (Click here).


NEXT


9.INSPECT CAMSHAFT TIMING SPROCKET ASSEMBLY

  1. Inspect the camshaft timing sprocket assembly.

    OK:
    The camshaft timing sprocket assembly rotates smoothly when pressure is applied.

Result 
Result
Proceed to
Outside standard range
A
Within standard range
B


B
Go to step 11
A


10.REPLACE CAMSHAFT TIMING SPROCKET ASSEMBLY

  1. Replace the camshaft timing sprocket assembly (Click here).


NEXT


11.CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012)

  1. Clear the DTC using the intelligent tester.

  1. Start the engine and warm it up.

  1. Drive the vehicle for 20 minutes or more.

  1. Connect the intelligent tester to the DLC3.

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

  1. Read DTCs.

    OK:
    No DTC output.

    HINT:
    DTC P0011 or P0012 may be set when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.



NG
REPLACE ECM (Click here)
OK

END 

12.CHECK HARNESS AND CONNECTOR (OCV - ECM)
A200900E01

  1. Disconnect the OCV connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C7-1 (OC1+) - B8-97 (OC1+)
    		Always
    		Below 1 Ω
    C7-2 (OC1-) - B8-96 (OC1-)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C7-1 (OC1+) or B8-97 (OC1+) - Body ground
    		Always
    		10 kΩ or higher
    C7-2 (OC1-) or B8-96 (OC1-) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector:
    (to OCV)
    *2
    		Front view of wire harness connector:
    (to ECM)

  1. Reconnect the OCV connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)