Wiring For Crash Signal, Checking

Wiring For Crash Signal, Checking

The engine control module receives the crash signal ("Crash cut-off was activated") from the airbag control module.

The airbag control module sends the crash signal to the engine control module (during an accident or if a final control diagnosis is carried out relating to the airbag system), the engine control module switches off the fuel pump, which stops the engine. It can however be restarted (e.g. to move vehicle out of danger area)

- Connect test box VAG1598/31 to wiring harness for engine control module; do not connect engine control module. Wiring and Component Check With Test Box VAG 1598/31
- Check for open circuit and short to positive or Ground in following wiring connections:

Test box VAG1598/31 Socket Control module for Airbag -J234- terminal
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- Repair any open/short circuit as necessary.

If no wiring malfunction is detected:
- Check Diagnostic Trouble Code (DTC) memory of airbag control module.