Dtc P0014 Camshaft Position B - Timing Over-Advanced Or System Performance (Bank 1)

Engine Hybrid System. Corolla. Zre142 Aze141
2Zr-Fe Engine Control. Corolla. Zre142 Aze141

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

MONITOR RESULT

CONFIRMATION DRIVING PATTERN

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014 OR P0015)

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)

CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)

INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (FOR EXHAUST CAMSHAFT)

INSPECT OIL CONTROL VALVE FILTER

ADJUST VALVE TIMING

CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

DTC P0014 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1)

DTC P0015 Camshaft Position "B" - Timing Over-Retarded (Bank 1)


DESCRIPTION

Refer to DTC P0013 (Link).

DTC No.
DTC Detection Condition
Trouble Area
P0014
Valve timing is stuck at a certain value when in the advance range
(2 trip detection logic)
  1. Valve timing
  2. Camshaft timing oil control valve assembly (for exhaust camshaft)
  3. Oil control valve filter
  4. Camshaft timing gear assembly (for exhaust camshaft)
  5. ECM
P0015
Valve timing is stuck at a certain value when in the retard range
(1 trip detection logic)

MONITOR DESCRIPTION

The ECM optimizes the exhaust valve timing using the Variable Valve Timing (VVT) system to control the exhaust camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly and the VVT controller (camshaft timing exhaust gear assembly). 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. The VVT controller can advance or retard the exhaust camshaft.
If the difference between the target and actual exhaust valve timing is large, and changes in the actual exhaust valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.
  1. Example:
  2. A DTC is stored when the following conditions "A" and "B" are met:
    1. It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
    2. After the above condition is met, the camshaft timing oil control valve assembly is forcibly activated for 10 seconds (Condition "B").
  3. DTC P0014 (Advanced Cam Timing) is subject to 2 trip detection logic.
  4. DTC P0015 (Retarded Cam Timing) is subject to 1 trip detection logic.
  5. These DTCs indicate that the VVT controller cannot operate properly due to a camshaft timing oil control valve assembly malfunction or the presence of foreign objects in the camshaft timing oil control valve assembly.

MONITOR STRATEGY


Related DTCs
P0014: Advanced camshaft timing
P0015: Retarded camshaft timing
Required Sensors/Components (Main)
Camshaft timing oil control valve and camshaft timing exhaust gear assembly
Required Sensors/Components (Related)
Crankshaft position sensor
Camshaft position sensor
Engine coolant temperature sensor
Frequency of Operation
Continuous
Duration
Within 10 seconds
MIL Operation
Advanced camshaft timing: 2 driving cycles
Retarded camshaft timing: Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


Monitor runs whenever following DTCs not present
P0013 (Exhaust VVT Oil Control Valve)
P0017 (Exhaust VVT System - Misalignment)
P0102, P0103 (Mass Air Flow Meter)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0125 (Insufficient Engine Coolant Temperature for Closed Loop Fuel Control)
P0335 (Crankshaft Position Sensor)
P0340, P0342, P0343 (Camshaft Position Sensor)
Battery voltage
11 V or more
Engine speed
500 to 4000 rpm
Engine coolant temperature
75 to 100°C (167 to 212°F)

TYPICAL MALFUNCTION THRESHOLDS


Advanced Camshaft Timing
Both of the following conditions are met
-
Deviation of actual valve timing and target valve timing
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT hold duty ratio learned value reaches the upper or lower limit.
Valve timing
No change at advanced valve timing

Retarded Camshaft Timing
Both of the following conditions are met
-
Deviation of actual valve timing and target valve timing
More than 5°CA (Crankshaft Angle) for 5 seconds or more after the VVT hold duty ratio learned value reaches the upper or lower limit.
Valve timing
No change at retarded valve timing
If the difference between the target and actual camshaft timing is greater than the specified value, the ECM operates the VVT actuator for 10 seconds by applying and releasing oil pressure.
Then, the ECM monitors the camshaft timing change for 10 seconds.

MONITOR RESULT

Refer to Checking Monitor Status (COROLLA_ZRE142 RM000000PDR0CEX.html).

CONFIRMATION DRIVING PATTERN


Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System. Dtc P0014 Camshaft Position B - Timing Over-Advanced Or System Performance (Bank 1)

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation) (COROLLA_ZRE142 RM000000PDK0ZAX.html).
  4. Turn the ignition switch off and wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the Techstream on [A].
  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
  7. Drive the vehicle at approximately 37 mph (60 km/h) for 10 minutes or more [C].
    CAUTION:
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.
  8. Idle the engine for 3 minutes or more [D].
  9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
  10. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  12. Input the DTC: P0014 or P0015.
  13. Check the DTC judgment result.

    Techstream Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].
  14. Repeat the pattern of accelerating the vehicle from rest to approximately 37 mph (60 km/h) and then decelerating the vehicle 10 to 15 times [F].
    CAUTION:
    When performing the confirmation driving pattern, obey all speed limits and traffic laws.
    HINT:
    Depress the accelerator pedal by a large amount.
  15. Idle the engine for 3 minutes or more [G].
  16. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
  17. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  18. Check the DTC judgment result again.
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
  19. Perform a universal trip and check for permanent DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).
    HINT:
    1. If a permanent DTC is output, the system is malfunctioning.
    2. If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0013 (COROLLA_ZRE142 RM000000XH70FWX_07.html).

INSPECTION PROCEDURE

HINT:
  1. DTC P0014 or P0015 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.
  2. Read freeze frame data using the Techstream. 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.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014 OR P0015)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

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

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0014 or P0015 is output
    		A
    DTC P0014 or P0015 and other DTCs are output
    		B
    HINT:
    If any DTCs other than P0014 or P0015 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (COROLLA_ZRE142 RM000000PDF0G8X.html)
A


2.PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)

  1. Connect the Techstream to the DLC3.

  1. Start the engine.

  1. Turn the Techstream on.

  1. Turn the A/C switch to ON.

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

  1. Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream.

    Result:

    Techstream Operation
    		Specified Condition
    0%
    		Normal engine speed
    100%
    		Engine idles roughly or stalls
    HINT:
    1. If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again.
    2. Refer to "Data List / Active Test" [VVT Ex OCV Duty #1 and VVT Ex Chg Angle #1] (COROLLA_ZRE142 RM000000PDN0MHX.html).


NG
Go to step 4
OK


3.CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

  1. Start the engine and warm it up.

  1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

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

  1. Read DTCs.

    Result:

    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0014 or P0015 is output
    		B


B
Go to step 7
A

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

4.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)

  1. Inspect the camshaft timing oil control valve assembly (for exhaust camshaft) (COROLLA_ZRE142 RM000003D3C00TX.html).



NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) (COROLLA_ZRE142 RM000003D3E00WX.html)
OK


5.INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (FOR EXHAUST CAMSHAFT)

  1. Inspect the camshaft timing gear assembly (for exhaust camshaft) (COROLLA_ZRE142 RM0000027IB0ABX.html).



NG
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (FOR EXHAUST CAMSHAFT) (COROLLA_ZRE142 RM0000027IB0ABX.html)
OK


6.INSPECT OIL CONTROL VALVE FILTER
Corolla. Zre142 Aze141

  1. Remove the oil control valve filter (COROLLA_ZRE142 RM000002XA30BAX_02_0108.html).

  1. Check that the filter is not clogged.

    OK:
    Filter is not clogged.

  1. Reinstall the oil control valve filter (COROLLA_ZRE142 RM000002XA40C3X_01_0019.html).



NG
REPLACE OIL CONTROL VALVE FILTER (COROLLA_ZRE142 RM000002XA30BAX_02_0108.html)
OK


7.ADJUST VALVE TIMING
Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System. Dtc P0014 Camshaft Position B - Timing Over-Advanced Or System Performance (Bank 1)
HINT:
There are no marks on the cylinder head to match-up for the purpose of checking valve timing. Valve timing can only be inspected by lining up the colored plates on the timing chain with the marks on the pulleys. It may be necessary to remove and reinstall the chain to match-up the alignment marks (COROLLA_ZRE142 RM000002XA40C3X.html).

NEXT


8.CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Clear DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

  1. Start the engine and warm it up.

  1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

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

  1. Read DTCs.

    Result:

    Result
    		Proceed to
    DTC is not output
    		A
    DTC P0014 or P0015 is output
    		B


B
REPLACE ECM (COROLLA_ZRE142 RM000001CN0030X.html)
A

END