Faulty Signal

Faulty signal

Checking the wiring








- Ignition off
- Disconnect connector D on the rear electronic module (REM).
The DTC means that communication does not work between the Rear electronic module (REM) and:
- Inclination Sensor Module (ISM) (for vehicles with structure week -201127)
- Siren (BBS) (for vehicles with structure week 201128-)
This may be due to a fault in the signal cable between the control modules or a defective communication device in one or all of the control modules. Check the signal cable. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Take readings between:
- Rear electronic module (REM) terminal #D26 (#26) and the inclination sensor module (ISM) terminal #2.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Rear Electronic Module (REM)
- Tilt sensor alarm, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
- Anti-theft protection siren Service and Repair

Was a fault detected?

Yes - Verification

No - Replacing the control module

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Replacing the control module
Replace:
- Inclination Sensor Module (ISM) (for vehicles with structure week -201127)
- Siren (BBS) (for vehicles with structure week 201128-)

Other information
- Tilt sensor alarm, replacing Service and Repair
- Anti-theft protection siren 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
- Reinstall the connectors, components etc.
- Ignition on.
Activate the alarm.
Check that the functions are OK.

Are the functions 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





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 the wiring

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