Faulty Signal

Faulty signal

Checking components and wiring
Check the connections on the parking assistance module (PAM) and sensor 1 (outer left). Check for contact resistance and oxidation. Also check intermediate connector.
Check the power supply cable between the connector in the parking assistance module (PAM) terminal #6 and the connector for sensor #1. Check for a short-circuit to ground. Check for an open-circuit.
Check the signal ground cable between the connector in the parking assistance module (PAM) terminal #7 and the connector for sensor #3. Check for a short-circuit to supply voltage. Check for an open-circuit.
Check the signal cable between the connector in the parking assistance module (PAM) terminal #5 and the connector for sensor #2. Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.
Try a new sensor if no fault is found.
Remedy as necessary.

Other information:
- To access or replace the parking assistance module (PAM), see
- To access or replace the back-up warning sensor, see
- To fault-trace the wiring and terminals, see 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.








- Switch off the ignition. Wait at least 15 seconds
- Reinstall the connectors, components etc.
- Ignition on for at least 5 seconds
- Move the gear selector lever to back-up (reversing) (R).
The parking assistance module (PAM) is activated by pressing the switch on the lower section of the climate control module (CCM). Click on the VCT2000 symbol to read off the diagnostic status from the parking assistance module (PAM).
Check that the parking assistance module (PAM) is active. Check that the sensors are OK.





Is the parking assistance module (PAM) active? Are the sensors OK?

Yes - Verification completed

No - Fault-tracing information

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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 components and wiring

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