1ZR-FE ENGINE CONTROL SFI SYSTEM P0014 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) P0015 Camshaft Position "B" - Timing Over-Retarded (Bank 1)
DESCRIPTION
Refer to DTC P0013.
Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>SFI SYSTEM>P0013
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P0014 | Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) | Exhaust 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) ·
Camshaft timing exhaust gear assembly ·
Oil control valve filter ·
ECM |
Comes on | DTC stored |
| P0015 | Camshaft Position "B" - Timing Over-Retarded (Bank 1) | Exhaust valve timing is stuck at a certain value when in the retard range (1 trip detection logic). | ·
Valve timing ·
Camshaft timing oil control valve assembly (for exhaust camshaft) ·
Camshaft timing exhaust gear assembly ·
Oil control valve filter ·
ECM |
Comes on | DTC stored |
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, camshaft timing oil control valve assembly (for exhaust camshaft) and VVT controller (camshaft timing exhaust gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly (for exhaust camshaft). 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 P0014 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, for 107 seconds or more (Condition "B").
Example:
A DTC P0015 is stored when the following conditions "C" and "D" are met:
It takes 5 seconds or more to change the valve timing by 5°CA (Condition "C").
The above condition "C" is met, for 9.5 seconds or more (Condition "D").
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 a camshaft timing oil control valve assembly (for exhaust camshaft) malfunction or the presence of foreign matter in the camshaft timing oil control valve assembly (for exhaust camshaft).
MONITOR STRATEGY
| Required Sensors/Components (Main) | Camshaft timing oil control valve assembly (for exhaust camshaft)
Camshaft timing exhaust 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: P0014 or P0015.
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 P0013.
Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>SFI SYSTEM>P0013
CAUTION / NOTICE / HINT
- HINT:
- ·
DTC P0014 or P0015 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. This 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 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.
A
B
Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Turn the A/C switch on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1).
- Powertrain > Engine and ECT > Active Test
-
Tester Display Control the VVT Exhaust Linear (Bank1) - 50004 234 87
Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the GTS.
- OK:
GTS Operation Engine Condition 0% Normal engine speed 100% Engine idles roughly or stalls
- HINT:
- ·
Refer to "Data List / Active Test" [VVT Ex OCV Duty #1, VVT Ex Chg Angle #1].
Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>SFI SYSTEM>DATA LIST / ACTIVE TEST
·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.
- 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 / Pending.
Read the pending DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC P0014 or P0015 is output B
- HINT:
-
DTC P0014 or P0015 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. This foreign matter may then be captured by the oil filter.
A
B
Inspect the camshaft timing oil control valve assembly (for exhaust camshaft).
Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>CAMSHAFT OIL CONTROL VALVE>INSPECTION
- Result:
Proceed to OK NG
OK
NG
Inspect the camshaft timing exhaust gear assembly.
Click hereEngine / Hybrid System>1ZR-FE ENGINE MECHANICAL>ENGINE UNIT>INSPECTION
- Result:
Proceed to OK NG
OK
NG
OK
NG
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 / Pending.
Read the pending DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC P0014 or P0015 is output B
A
B