2NZ-FE ENGINE CONTROL SFI SYSTEM P0011 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)
DESCRIPTION
Refer to DTC P0010.
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>P0010
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P0011 | Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) | Valve timing is stuck at a certain value when in the advance range (1 trip detection logic). | ·
Valve timing ·
Camshaft timing oil control valve assembly ·
Oil control valve filter ·
Camshaft timing gear assembly ·
ECM |
Comes on | DTC stored |
| P0012 | Camshaft Position "A" - Timing Over-Retarded (Bank 1) | Valve timing is stuck at a certain value when in the retard range (2 trip detection logic). | ·
Valve timing ·
Camshaft timing oil control valve assembly ·
Oil control valve filter ·
Camshaft timing gear assembly ·
ECM |
Comes on | DTC stored |
MONITOR DESCRIPTION
The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, camshaft timing oil control valve assembly and VVT controller (camshaft timing 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 intake camshaft.
If the difference between the target and actual intake valve timings is large, and changes in the actual intake valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and stores a DTC.
Example:
A DTC is stored when the following conditions "A" and "B" are met:
It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
The above condition "A" is met, the camshaft timing oil control valve is forcibly activated for 60 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 a camshaft timing oil control valve assembly malfunction or the presence of foreign matter in the camshaft timing oil control valve assembly.
MONITOR STRATEGY
| Required Sensors/Components (Main) | Camshaft timing oil control valve assembly
Camshaft timing gear assembly |
| Required Sensors/Components (Related) | Crankshaft position sensor
Camshaft position sensor Engine coolant temperature sensor |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the GTS on [A].
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
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.
Idle the engine for 3 minutes or more [D].
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
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.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
Input the DTC: P0011 or P0012.
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 |
- 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].
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.
Idle the engine for 3 minutes or more [G].
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
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.
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.
WIRING DIAGRAM
Refer to DTC P0010.
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>P0010
CAUTION / NOTICE / HINT
- HINT:
- ·
DTC P0011 or P0012 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.
·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.
PROCEDURE
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTC P0011 or P0012 is output A DTC P0011 or P0012 and other DTCs are output B
- HINT:
-
If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first.
A
B
Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Turn the A/C on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1).
- Powertrain > Engine and ECT > Active Test
-
Tester Display Control the VVT Linear (Bank1) - 50004 234 32
Check the engine speed while operating the camshaft timing oil control valve assembly using the GTS.
- OK:
GTS Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls
- HINT:
-
Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1].
-
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DATA LIST / ACTIVE TEST
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine and ECT > Clear DTCs
- 50002 234
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC P0011 or P0012 is output B
- HINT:
-
DTC P0011 or P0012 may be stored when foreign matter in the engine oil is caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. That foreign matter may then be captured by the oil filter.
A
B
| *a | Timing Groove |
| *a | Timing Mark |
Remove the cylinder head cover sub-assembly.
Click hereEngine / Hybrid System>2NZ-FE ENGINE MECHANICAL>ENGINE UNIT>DISASSEMBLY
Turn the crankshaft damper sub-assembly, and align its groove with the timing mark "0" on the timing chain cover.
Check that the timing marks on the camshaft timing sprocket and camshaft timing gear assembly are facing upward as shown in the illustration.
- HINT:
-
If not, turn the crankshaft 1 complete revolution (360°) and align the marks as above.
- OK:
Timing marks on camshaft timing sprocket and camshaft timing gear assembly are aligned as shown in the illustration.
- HINT:
-
If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.
- Result:
Proceed to OK NG
OK
NG
Inspect the camshaft timing oil control valve assembly.
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>CAMSHAFT OIL CONTROL VALVE>INSPECTION
- Result:
Proceed to OK NG
OK
NG
| *1 | Oil Control Valve Filter |
Remove the oil control valve filter.
Click hereEngine / Hybrid System>2NZ-FE ENGINE MECHANICAL>CYLINDER HEAD>DISASSEMBLY
Check that the filter is not clogged.
- OK:
Filter is not clogged.
- Result:
Result OK NG
OK
NG
Replace the camshaft timing gear assembly.
Click hereEngine / Hybrid System>2NZ-FE ENGINE MECHANICAL>CAMSHAFT>REMOVAL
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine and ECT > Clear DTCs
- 50002 234
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC P0011 or P0012 is output B
A
B
Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
- Powertrain > Engine and ECT > Clear DTCs
- 50002 234
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the pending DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC P0011 or P0012 is output B
A
B