Signal Too Low Or Signal Missing

Signal too low or signal missing

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
- Disconnect the connector from parking sensor 7 (inner right front)
- Disconnect connector B from the parking assistance module (PAM).
Check the connectors for the parking sensor and the parking assistance module (PAM). Check for damage to pins and terminals. Also check the other connectors that connect the wiring between the parking assistance module (PAM) and the parking sensor.
Remedy as necessary.
Check the signal cable between the parking assistance module (PAM) and the parking sensor connector. Check for a short-circuit to ground. Check for an open-circuit.
Check the cable between:
- Parking assistance module (PAM) terminal #B6 and parking sensor connector terminal #2.
Remedy as necessary.
Check the power supply cable between the parking assistance module (PAM) and the parking sensor connector. Check for a short-circuit to ground. Check for an open-circuit.
Check the cable between:
- Parking assistance module (PAM) terminal #B2 and parking sensor connector terminal #1.
Remedy as necessary.
If no fault is found, replace the parking sensor.

Other information
- Connecting the breakout box Connecting the Breakout Box, Parking Assistance Module (PAM)
- Signal specification, L.H.D Signal Specification, Parking Assistance Module (PAM)
- For further information about cable routing and terminals, see the wiring diagram
- For accessing/replacing the front parking assistance sensors, see Installation instructions, Accessories.
- Parking assistance module Service and Repair





Continue - Verification

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Verification




Verification

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




- Ignition off. Wait at least 10 seconds.
- Reinstall the connectors, components etc.
- Ignition on Wait at least 10 seconds.
- Read off the diagnostic trouble codes (DTCs) by clicking on the VCT2000 symbol.
If the fault is intermittent, the fault has been remedied.





Is the fault intermittent?

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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