Toyota Venza manuals

Toyota Venza: Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) (P0014,P0015)

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) (P0014,P0015)

DESCRIPTION

Refer to DTC P0013 (See page ).


DTC No.

DTC Detection Condition

Trouble Area

P0014

The valve timing is stuck at a certain value when in the advance range (2 trip detection logic).

  • Valve timing
  • Camshaft timing oil control valve assembly (for exhaust camshaft)
  • Oil control valve filter
  • Camshaft timing exhaust gear assembly
  • ECM

P0015

The 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.

  • Example:
  • A DTC is set 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").
  • DTC P0014 (Advanced Cam Timing) is subject to 2 trip detection logic.
  • DTC P0015 (Retarded Cam Timing) is subject to 1 trip detection logic.
  • These DTCs indicate that the VVT controller cannot operate properly due to camshaft timing oil control valve assembly malfunctions 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 VVT controller

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 stored

P0013 (Exhaust Camshaft Timing Oil Control Valve)

P0017 (Exhaust VVT System - Misalignment)

P0102, P0103 (Mass Air Flow Meter)

P0115, P0117, P0118 (Engine Coolant Temperature Sensor)

P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)

P0335 (Crankshaft Position Sensor)

P0340 (Camshaft Position Sensor)

Battery voltage

11 V or higher

Engine speed

500 to 4000 rpm

Engine coolant temperature

75 to 100°C (167 to 212°F)

TYPICAL MALFUNCTION THRESHOLDS

P0014: Advanced Camshaft Timing

Both of 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

P0015: Retarded Camshaft Timing

Both of 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 camshaft timing oil control valve assembly 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 (See page
).

CONFIRMATION DRIVING PATTERN


  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) (See page ).

  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 60 km/h (37 mph) 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 / Trouble Codes [E].
  10. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P0014, P0015.
  13. Check the DTC judgment result.

    Techstream 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

    HINT:

    • 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 steps [F] through [H].
  14. Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) 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 / Trouble Codes [H].
  17. Read the pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  18. Check the DTC judgment result again.

    HINT:

    • 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 following procedure.
  19. Perform a universal trip and check for permanent DTCs (See page ).

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0013 (See page ).


CAUTION / NOTICE / HINT

HINT:

  • DTC P0014 or P0015 may be stored 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. Those foreign objects may then be captured by the oil filter.
  • 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 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.

PROCEDURE

1.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

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


A

2.

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

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream on.

(d) Turn the A/C switch on.

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

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

OK:

Techstream Operation

Specified Condition

0%

Normal engine speed

100%

Engine idles roughly or stalls

HINT:

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.


NG

GO TO STEP 4


OK

3.

CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs (See page ).


(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON and turn the Techstream on.

(g) Start the engine.

(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(j) Read the pending DTCs.

Result

Proceed to

DTC is not output

A

DTC P0014 or P0015 is output

B

HINT:

DTC P0014 or P0015 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.


A

CHECK FOR INTERMITTENT PROBLEMS


B

4.

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

(a) Inspect the camshaft timing oil control valve assembly (for exhaust camshaft) (See page ).



NG

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


OK

5.

CHECK VALVE TIMING



NG

GO TO STEP 9


OK

6.

INSPECT OIL CONTROL VALVE FILTER



NG

REPLACE OIL CONTROL VALVE FILTER


OK

7.

REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

(a) Replace the camshaft timing exhaust gear assembly (See page ).


HINT:

Perform "Inspection After Repair" after replacing the camshaft timing exhaust gear assembly (See page ).



NEXT

8.

CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs (See page ).


(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON and turn the Techstream on.

(g) Start the engine.

(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(j) Read the pending DTCs.

Result

Proceed to

DTC is not output

A

DTC P0014 or P0015 is output

B


A

END


B

REPLACE ECM

9.

CHECK ENGINE MECHANICAL SYSTEM



NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA


OK

10.

CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs (See page ).


(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON and turn the Techstream on.

(g) Start the engine.

(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(j) Read the pending DTCs.

Result

Proceed to

DTC is not output

A

DTC P0014 or P0015 is output

B


A

CHECK FOR INTERMITTENT PROBLEMS


B

REPLACE ECM

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