Faulty Position

Faulty position

Checking status

Are the adaptation values correct?

Yes - Intermittent fault

No - Checking the camshaft adjustment

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Checking the camshaft adjustment
Adjust the camshaft settings.

Note! The check is carried out by using the adjustment tool on the camshafts and crankshaft in the prescribed manner.

Other information:
- To adjust the camshaft position (CMP) on 5 cylinder engines, see Camshaft seal/variable valve timing (VVT) unit, replacing Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing
- To adjust the camshaft position (CMP) on 6 cylinder engines, see Replacing the camshaft seals / variable valve timing unit Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing.

Continue - Checking adaptation

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Checking adaptation

- Start the engine.
Check the camshaft adaptation by reading off the adaptation values of the camshaft (flanks 1-4). All values must be between -7° and +7°.
Turbocharged engines:When checking, the accelerator pedal (AP) must be depressed slightly but the engine speed must be below 1200 rpm.
Naturally aspirated engines:When checking the engine must be idling.

Hint: Theoretically the values for flanks 1-4 should be the same, however because of mechanical tolerances the values may vary between the different flanks by approximately +/-2°.

If all the adaptation values are correct (between -7° and +7°) the fault is cured by adjusting the camshaft settings.
If the adaptation values are -20° or +20° (maximum adaptation) and the camshaft setting has been adjusted, the camshaft reset valve is defective.
If any adaptation value is between -20° and -8° or between +8° and +20° (not maximum adaptation but higher or lower than ±7°) and the camshaft setting has been adjusted, the variable valve timing unit is defective.
Remedy as necessary.

Other information:
- To replace the camshaft reset valve on 5-cylinder engines, see Variable valve timing solenoid, replacing Removal and Replacement
- To replace the camshaft reset valve on 6-cylinder engines, see
- To adjust the camshaft position (CMP) on 5 cylinder engines, see Camshaft seal/variable valve timing (VVT) unit, replacing Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing
- To adjust the camshaft position (CMP) on 6 cylinder engines, see Replacing the camshaft seals / variable valve timing unit Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing
- For further information about variable valve timing control, see Variable valve timing control Description and Operation.

Continue - Verification

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Intermittent fault
If the diagnostic trouble code (DTC) for this fault is stored but the adaptation values are correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

Hint: If the diagnostic trouble code (DTC) for the fault recurs after erasing diagnostic trouble codes (DTCs) and the camshaft reset valve is not defective, the variable valve timing unit may be defective.

Other information:
- For further information about variable valve timing control, see Variable valve timing control Description and Operation
- To replace the camshaft reset valve on 5-cylinder engines, see Variable valve timing solenoid, replacing Removal and Replacement
- To replace the camshaft reset valve on 6-cylinder engines, see
- To adjust the camshaft position (CMP) on 5 cylinder engines, see Camshaft seal/variable valve timing (VVT) unit, replacing Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing
- To adjust the camshaft position (CMP) on 6 cylinder engines, see Replacing the camshaft seals / variable valve timing unit Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing.

Continue - Verification

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Verification

Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off
- Reinstall the connectors, components etc.
- Ignition on
- Start the engine.
Check the camshaft adaptation by reading off the adaptation values of the camshaft (flanks 1-4). All values must be between -7° and +7°.
Turbocharged engines:When checking, the accelerator pedal (AP) must be depressed slightly but the engine speed must be below 1200 rpm.
Naturally aspirated engines:When checking the engine must be idling.

Hint: Theoretically the values for flanks 1-4 should be the same, however because of mechanical tolerances the values may vary between the different flanks by approximately ±2°.

Are all the adaptation values correct?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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Fault-tracing information

Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking status

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