Code No. P0011: Inlet Variable Valve Timing System








OPERATION



  • Refer to Code No. P1021: Inlet oil feeder control valve system .

FUNCTION



  • The engine-ECU controls the spool valve position of the inlet oil feeder control valve corresponding to the driving condition of the engine and continuously changes the phase of the inlet camshaft.
  • The phase angle of the inlet camshaft is computed from the signal patterns of the crank angle sensor and inlet 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 1,200 r/min.
  • Engine coolant temperature is more than 76°C.
Judgment Criterion
  • Difference between inlet valve open timing and target inlet valve open timing is more than 5°CA.

FAIL-SAFE AND BACKUP FUNCTION



  • None

PROBABLE CAUSES



  • Failed inlet oil feeder control valve
  • Damage in inlet oil feeder control valve circuit or loose connector contact
  • Failed inlet timing sprocket operation
  • Clogged oil passage
  • Failed inlet camshaft
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

  • Refer to Data List Reference Table .

  1. Item 36: V.V.T. phase angle (inlet)

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.

STEP 2. Check inlet oil feeder control valve itself.

  • Check inlet oil feeder control valve itself (Refer to ).

Q. Is the check result normal?
Go to Step 3.
Replace the inlet oil feeder control valve.

STEP 3. Connector check: B-22 inlet oil feeder control valve connector and B-08 engine-ECU connector

Q. Is the check result normal?
Go to Step 4.
Repair or replace the connector.

STEP 4. Check harness between B-22 (terminal No. 1) inlet oil feeder control valve connector and B-08 (terminal No. 1) engine-ECU connector.

  • Check output line for damage.

Q. Is the check result normal?
Go to Step 5.
Repair the damaged harness wire.

STEP 5. Connector check: A-33X engine control relay connector

Q. Is the check result normal?
Go to Step 6.
Repair or replace the connector.

STEP 6. Check harness between A-33X (terminal No. 2) engine control relay connector and B-22 (terminal No. 2) inlet oil feeder control valve connector.
note Before checking harness, check intermediate connector A-70, and repair if necessary.

  • Check power supply line for damage.

Q. Is the check result normal?
Go to Step 7.
Repair the damaged harness wire.

STEP 7. Check inlet camshaft sensing portion.

Q. Is the check result normal?
Go to Step 8.
Replace the inlet camshaft.

STEP 8. Check inlet variable valve timing sprocket operation mechanism for being stuck.

  • Check inlet variable valve timing sprocket
    (Refer to GROUP 11F - Timing Chain - Inspection ).

Q. Is the check result normal?
Go to Step 9.
Repair it.

STEP 9. Check oil passage of inlet variable valve timing control system for being clogged.

Q. Is the check result normal?

Go to Step 10.
Repair it.

STEP 10. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is diagnosis code set?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).