Signal Missing

Signal missing

Checking components and wiring
Check the rear electronic module (REM) and seat belt reminder sensor connectors. Check for contact resistance and oxidation. Check for damage and loose connections. Also check intermediate connector.
Check the signal cable between rear electronic module (REM) terminal #B19 (terminal #A39) and seat belt reminder sensor connector terminal #9. Check for an open-circuit.
Check the signal cable between rear electronic module (REM) terminal #B20 (terminal #A40) and seat belt reminder sensor connector terminal #10. Check for an open-circuit.
Check the seat belt reminder sensor. Measure the resistance between terminals #9 and #10 in the sensor connector.

Hint: The resistance should be above 100 kohms with no passengers and below 10 kohms with passengers.

Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access or replace the seat belt reminder sensor, see Heater pad backrest and cushion, replacing Service and Repair
- For information about signals, see Signal specification Pinout Values and Diagnostic Parameters
- Checking wiring and terminals Checking Wiring And Terminals.














Continue - Verification

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Verification




Verification

Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the status for seat belt reminder sensor by clicking on the VCT2000 symbol.
Check that the sensor changes status with and without a passenger in the passenger seat.





Does the seat belt reminder sensor change status with and without a passenger?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking components and wiring

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