DTC P001400 Camshaft Position "B" - Timing Over-Advanced or System Performance Bank 1 |
DTC P001500 Camshaft Position "B" - Timing Over-Retarded Bank 1 |
for Preparation Click here
DESCRIPTION
Refer to DTC P001313 (Click here).DTC No. | DTC Detection Condition | Trouble Area |
P001400 | Exhaust valve timing is stuck at a certain value when in the advance range (2 trip detection logic). |
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P001500 | Exhaust valve timing is stuck at a certain value when in the retard range (1 trip detection logic). |
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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 the VVT controller stuck malfunction and stores a DTC.
- Example:
- A DTC P001400 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").
- After the above condition is met, the camshaft timing oil control valve assembly (for exhaust camshaft) is forcibly activated for 60 seconds (Condition "B").
- A DTC P001500 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").
- After the above condition is met, the camshaft timing oil control valve assembly (for exhaust camshaft) is forcibly activated for 10 seconds (Condition "D").
- DTC P001400 (Advanced Camshaft Timing) is subject to 2 trip detection logic.
- DTC P001500 (Retarded Camshaft 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) | Camshaft position sensor Crankshaft position sensor Engine coolant temperature sensor |
Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
- Connect the GTS to the DLC3.
- Turn the engine switch on (IG) and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the engine switch off and wait for at least 30 seconds.
- Turn the engine switch on (IG) 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 / 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 / Utility / All Readiness.
- Input the DTC: P001400 or P001500.
- 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].
- DTC judgment completed
- 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 / 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 P001313 (Click here).INSPECTION PROCEDURE
- HINT:
- DTC P001400 or P001500 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.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P001400 OR P001500) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
- Result:
Result Proceed to DTC P001400 or P001500 is output A DTC P001400 or P001500 and other DTCs are output B
- HINT:
- If any DTCs other than P001400 or P001500 are output, troubleshoot those DTCs first.
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A | |
2.PERFORM ACTIVE TEST USING GTS (CONTROL THE EXHAUST VVT OCV DUTY RATIO BANK 1) |
Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Active Test / Control the Exhaust VVT OCV Duty Ratio Bank 1.
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" [Exhaust VVT OCV Control Duty Ratio Bank 1 and Exhaust VVT Change Angle Bank 1] (Click here).
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OK | |
3.CHECK WHETHER DTC OUTPUT RECURS (DTC P001400 OR P001500) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
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 / Trouble Codes / Pending.
Read the pending DTCs.
- Result:
Result Proceed to DTCs are not output A DTC P001400 or P001500 is output B
- HINT:
- DTC P001400 or P001500 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.
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A | ||
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4.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) |
Inspect the camshaft timing oil control valve assembly (for exhaust camshaft) (Click here).
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OK | |
5.CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) |
Remove the cylinder head cover sub-assembly.
Text in Illustration *a 7.45° *b 32.43° *c Timing Mark *d "0" Timing Mark *e Groove - -
Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain cover.
Check that the timing marks of the camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions shown in the illustration.
- HINT:
- If the timing marks are not at the positions shown, turn the crankshaft one revolution clockwise.
- OK:
- Timing marks on camshaft timing gear assembly and camshaft timing exhaust gear assembly are at the positions 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.
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OK | |
6.INSPECT OIL CONTROL VALVE FILTER |
Remove the oil control valve filter (Click here).
Text in Illustration *1 Oil Control Valve Filter
Check that the filter is not clogged.
- OK:
- Filter is not clogged.
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OK | |
7.REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY |
Replace the camshaft timing exhaust gear assembly (Click here).
- HINT:
- Perform "Inspection After Repair" after replacing the camshaft timing exhaust gear assembly (Click here).
NEXT | |
8.CHECK WHETHER DTC OUTPUT RECURS (DTC P001400 OR P001500) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
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 / Trouble Codes / Pending.
Read the pending DTCs.
- Result:
Result Proceed to DTCs are not output A DTC P001400 or P001500 is output B
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A | ||
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9.CHECK ENGINE MECHANICAL SYSTEM |
Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.
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OK | |
10.CHECK WHETHER DTC OUTPUT RECURS (DTC P001400 OR P001500) |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
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 / Trouble Codes / Pending.
Read the pending DTCs.
- Result:
Result Proceed to DTCs are not output A DTC P001400 or P001500 is output B
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A | ||
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