Code No. P0011: Intake Variable Valve Timing System
FUNCTION
- The engine-ECU controls the spool valve position of the
oil feeder control valve corresponding to the driving condition of the engine and continuously
changes the phase of the intake camshaft.
- The phase angle of the intake camshaft is computed from the signal patterns of the
crank angle sensor and camshaft position sensor.
TROUBLE JUDGMENT
Check Conditions
- More than 20 seconds have passed since the engine starting sequence was completed.
- Engine speed is more than 1,188 r/min.
- Engine coolant temperature is more than 76°C.
- Difference between intake valve open timing and target intake valve open timing
is more than 5°CA for 5 seconds.
PROBABLE CAUSES
- Failed intake oil feeder control valve
- Harness damage in intake oil feeder control valve circuit or loose connector contact
- Failed timing sprocket operation
- Clogged oil passage
- Failed engine-ECU
DIAGNOSIS PROCEDURE |
STEP 1. M.U.T.-III data list |
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ). |
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Go to Step 2 . |
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STEP 2. Check intake oil feeder control valve itself. |
Q.
Is the check result normal?
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Go to Step 3 . |
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Replace the intake oil feeder control valve. |
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STEP 3. Connector check: B-35 intake oil feeder control valve connector and B-29 engine-ECU connector |
Q.
Are the check results normal?
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Go to Step 4 . |
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Repair or replace the connector. |
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STEP 4. Check harness between B-35 (terminal No. 1) intake oil feeder control valve connector and B-29 (terminal No. 1) engine-ECU connector. |
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Q.
Is the check result normal?
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Go to Step 5 . |
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Repair the damaged harness wire. |
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STEP 5. Connector check: A-33X engine control relay connector |
Q.
Is the check result normal?
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Go to Step 6 . |
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Repair or replace the connector. |
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STEP 6. Check harness between A-33X (terminal No. 2) engine control relay connector and B-35 (terminal No. 2) intake oil feeder control valve connector. |
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Q.
Is the check result normal?
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Go to Step 7 . |
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Repair the damaged harness wire. |
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STEP 7. Check oil feeder control valve filter for clogging. |
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Q.
Is the check result normal?
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Go to Step 8 . |
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Replace the oil feeder control valve filter. |
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STEP 8. Check intake camshaft sensing portion. |
Q.
Is the check result normal?
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Go to Step 9 . |
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Replace the intake camshaft. |
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STEP 9. M.U.T.-III diagnosis code |
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Q.
Is diagnosis code set?
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Replace the engine-ECU. |
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ). |
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