P0011

2AZ-FXE ENGINE CONTROL: SFI SYSTEM: P0011, P0012: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

P0011 - Camshaft Position "A" - Timing Over-Advanced (Bank 1)

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

DESCRIPTION

Refer to DTC P0010 P0010.





MONITOR DESCRIPTION

The hybrid vehicle control ECU optimizes the intake valve timing using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the hybrid vehicle control ECU, the camshaft timing oil control valve assembly and the VVT controller. The hybrid vehicle control ECU 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 intake camshaft.

If the difference between the target and actual intake valve timing is large, and changes in the actual intake valve timing are small, the hybrid vehicle control ECU interprets this as a VVT controller stuck malfunction and sets a DTC.

- Example

- A DTC is set when the following conditions "A" and "B" are met:

a. It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").

b. After the above condition is met, the camshaft timing oil control valve is forcibly activated for 10 seconds (Condition "B").

- DTC P0011 (Advanced Cam Timing) is subject to 1 trip detection logic.

- DTC P0012 (Retarded Cam Timing) is subject to 2 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





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

Advanced Camshaft Timing





Retarded Camshaft Timing





If the difference between the target and actual camshaft timing is greater than the specified value, the hybrid vehicle control ECU operates the VVT actuator (camshaft timing oil control valve assembly).

Then, the hybrid vehicle control ECU monitors the camshaft timing change for 10 seconds.

MONITOR RESULT

Refer to Checking Monitor Status Mode 6 Data.

CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the power switch on (IG) and turn the Techstream on.

3. Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
- P0011 is output:
Clear the DTC without using the Techstream.
- P0012 is output:
Clear the DTC with using the Techstream.

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

5. Turn the power switch on (IG) and turn the Techstream on [A].

6. Put the engine in inspection mode Component Tests and General Diagnostics.

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

8. Accelerate the vehicle to 37 mph (60 km/h) or more for 10 seconds or more [C].

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

9. Idle the engine for 3 minutes or more [D].

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

11. Read the pending DTC [E].

HINT
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.

12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

13. Input the DTC: P0011 or P0012.

14. Check the DTC judgment result.





HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [F] through [H].

15. Accelerate the vehicle to 37 mph (60 km/h) or more for 10 seconds or more [F].

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

16. Idle the engine for 3 minutes or more [G].

17. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

18. Input the DTC: P0011 or P0012.

19. Check the DTC judgment result again [H].

HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.

WIRING DIAGRAM

Refer to DTC P0010 P0010.

INSPECTION PROCEDURE

HINT
- DTC P0011 or P0012 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 hybrid vehicle control ECU 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 P0011 OR P0012)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

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

(e) Read the DTCs.

Result:





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

B -- GO TO DTC CHART SFI System
A -- Continue to next step.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Put the engine in inspection mode Component Tests and General Diagnostics.

(e) Start the engine.

(f) Warm up the engine.

(g) Turn the A/C on.

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

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

Result:





HINT
Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1] Data List / Active Test.

NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
OK -- Continue to next step.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Put the engine in inspection mode Component Tests and General Diagnostics.

(f) Start the engine and warm it up.

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

(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

(i) Read the pending DTCs.

Result:





B -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

A -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY P0010

NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Removal
OK -- Continue to next step.

5. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

(a) Remove the cylinder head cover Removal.





(b) Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.

(c) Check that the alignment marks of the camshaft timing gears are aligned with the alignment marks of the bearing cap as shown in the illustration.

If not, turn the crankshaft 1 revolution (360°), then align the marks as above.

OK:

Alignment marks on the camshaft timing gears are aligned as shown in the illustration.

Text in Illustration





(d) Reinstall the cylinder head cover Reassembly.

NG -- ADJUST VALVE TIMING Removal
OK -- Continue to next step.

6. INSPECT OIL CONTROL VALVE FILTER

(a) Remove the oil control valve filter Disassembly.





(b) Check that the filter is not clogged.

OK:

Filter is not clogged.

Text in Illustration





(c) Reinstall the oil control valve filter Reassembly.

NG -- REPLACE OIL CONTROL VALVE FILTER Disassembly
OK -- Continue to next step.

7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

(a) Replace the camshaft timing gear assembly Removal.

NEXT -- Continue to next step.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Put the engine in inspection mode Component Tests and General Diagnostics.

(f) Start the engine and warm it up.

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

(h) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.

(i) Read the pending DTCs.

Result:





B -- REPLACE HYBRID VEHICLE CONTROL ECU Removal

A -- END