Faulty Signal

Faulty signal

Checking the status

Hint: If the diagnostic trouble code (DTC) for incorrect camshaft position is stored, fault-tracing for this diagnostic trouble code (DTC) must be carried out first.




- Start the engine.
Read off the fault status from the camshaft position (CMP) sensor to check whether the fault is permanent or intermittent.
The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".









Continue - Checking the components and wiring

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Checking the components and wiring

Hint: If the diagnostic trouble code (DTC) for incorrect camshaft position is stored, fault-tracing for this diagnostic trouble code (DTC) must be carried out first.

Check the connector for the camshaft position (CMP) sensor. Check for contact resistance. Check for oxidation.
Check that the camshaft position (CMP) sensor is securely installed in the correct position.
Check the signal cable between engine control module (ECM) terminal #A64 (#B4) and camshaft position (CMP) sensor connector terminal #3. Check for an intermittent short-circuit to ground. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.
Check the ground lead between control module terminal #A43 (#A43) and camshaft position (CMP) sensor connector terminal #2. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.
Check the power supply cable between control module terminal #A39 (#A39) and camshaft position (CMP) sensor connector terminal #1. Check for an intermittent short-circuit to ground. Check for an intermittent short-circuit to supply voltage. Check for an intermittent open-circuit.

Hint: With the ignition on and the camshaft position (CMP) sensor connector disconnected, the voltage between terminal #1 and ground must be approximately 5 V.

Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- To access/replace the camshaft sensor: Camshaft position sensor (CMP) Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals













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.
- Start the engine.
Read off the fault status of the camshaft position (CMP) sensor.
If the function is correct, the camshaft position (CMP) sensor fault status must be "No fault detected".









Has the fault been remedied?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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Fault-tracing information

FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the status

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