Faulty Signal

Faulty signal

Checking components and wiring

Caution! Do not touch the terminal pins in the parking assistance module (PAM). There is a risk of static discharge. This could damage the parking assistance module (PAM).








- Ignition off.
Check the connectors for the parking sensor and the Parking Assistance Module (PAM). Check for damage to pins and connections. Also check the other connectors, which connect the cables between the Parking Assistance Module (PAM) and the parking sensor.

Note! The connections on Parking Assistance Module (PAM) that ground/supply voltage, respectively, to parking sensor may differ from vehicle to vehicle. The rear parking sensors are grounded in Parking Assistance Module (PAM) on pins #C1, #C7, #C8, #C9. The rear parking sensors are supplied with voltage by Parking Assistance Module (PAM) on pins #C6, #C10, #C11, #C12. The rear parking sensors' signal lines are connected to Parking Assistance Module (PAM) on pins #C2, #C3, #C4, #C5.

- Check the signal cable between the parking assistance module (PAM) and the parking sensor connector. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.
- Check the power supply lead between the parking assistance module (PAM) and the parking sensor connector. Check for a short-circuit to ground.
- Check the ground lead between the parking assistance module (PAM) and the parking sensor connector. Check for a short-circuit to supply voltage.
Remedy as necessary.
If no fault is found, replace the parking sensor.

Other information
- Back-up warning sensor, replacing Removal and Replacement
- 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 - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking components and wiring

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