Faulty Position

Faulty position

Checking the fault type
Read out the adapted values for the camshaft. There are 4 values, one for each flank.
If one of the adaptation values is 20 degrees, the camshaft reset valve has stuck. Replace the camshaft reset valve.
If one of the adaptation values is less than 9 degrees, the camshaft reset valve is defective. Replace the camshaft reset valve.
If any of the adaptation values are between 10 and 19 degrees, the variable camshaft must be adjusted in relation to the crankshaft. Adjust the camshaft.
Remedy as necessary

Other information:
- To adjust the camshaft position (CMP), see Replacing the camshaft seals / variable valve timing (VVT) unit Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing





Continue - Verification

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the fault type

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