Signal Missing

Signal missing

Checking components and wiring

Note! The fault must be corrected and the diagnostic trouble code (DTC) erased before further fault-tracing can be carried out on the parking assistance module (PAM) and its components.

Check the connections on the rear electronic module (REM) and parking assistance module (PAM). Check for contact resistance, oxidation and damage.
Check the fuse for the back-up warning system.
Check the relay for 15I supply in the rear electronic module (REM).

Hint: In case of a fault in the operation of relay 15I supply, a diagnostic trouble code (DTC) is stored in the rear electronic module (REM).

Check the power supply cable between the fuse for 15I supply and relay #1, between relay #3 and the fuse for the back-up (reversing) warning system, and between fuse and the parking assistance module (PAM) terminal #1. Check for an open-circuit. Check for a short-circuit to ground.
Check the ground lead between parking assistance module (PAM) terminal #8 and the ground terminal. Check for an open-circuit. Check for a short-circuit to supply voltage.
Check the cable between the rear electronic module (REM) connector terminal #8D (#B08) and the parking assistance module (PAM) terminal #12. Check for an open-circuit. Check for a short-circuit to ground.
Try a new parking assistance module (PAM) if no faults were found.

Other information:
- To access or replace the rear electronic module (REM), see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- Connecting the breakout box Connecting the Breakout Box
- Signal specification Signal Specification
- To access or replace the parking assistance module (PAM), see Parking assistance module (PAM), replacing Parking Assistance Module (PAM), Replacing
- For further information about the fuses and relays, see the Wiring Diagram
- Checking wiring and terminals Checking Wiring and Terminals









Continue - Erasing diagnostic trouble code (DTC)

-------------------------------------------------

Erasing diagnostic trouble code (DTC)




- Switch on the ignition. Wait at least 5 seconds.
Erase diagnostic trouble code (DTC) REM-4F41 by clicking the VCT2000 symbol.
This may take up to one minute.





Numeric Result 0 - Erasing diagnostic trouble code (DTC) complete

-------------------------------------------------

Erasing diagnostic trouble code (DTC) complete




- Switch off the ignition. Wait at least 15 seconds.

Numeric Result 0 - Verification

-------------------------------------------------

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 - Troubleshooting procedure complete

No - Fault-tracing information

-------------------------------------------------

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

------------------------

Attempt New Test - Checking components and wiring

-------------------------------------------------