Communication Fault

Communication fault

Checking cable and component
Check connector D for the rear electronic module (REM) and the connector for the inclination sensor module (ISM). Check for contact resistance and oxidation.
Check the communication cable between rear electronic module (REM) connector terminal #26 (#D26) and inclination sensor module (ISM) connector terminal #2. Check for an open-circuit.
Check the cable between inclination sensor module (ISM) connector terminal #5 and the ground terminal. Check for open-circuit.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Rear Electronic Module (REM)
- Signal specification, Rear electronic module (REM) Signal Specification, Rear Electronic Module (REM)
- Disconnecting the rear electronic module (REM): Integrated relay / fusebox cargo compartment / rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- 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.
- Ignition on
- Shut all the doors. Activate the alarm. Wait 25 seconds until the car is alarmed
- Then deactivate the alarm
- Read off diagnostic trouble codes (DTCs).
Check if the status of the diagnostic trouble code (DTC) is intermittent.





Is the status intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 cable and component

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