Operation CHARM: Car repair manuals for everyone.

No PCM Messages

Test 1 - 2:




Test 3 - 4:






SYMPTOM
NO PCM MESSAGE

WHEN MONITORED
With ignition on, the Side Imp act Airbag Control Module monitors the PCI Bus for the PCM VIN message.

SET CONDITION
If the Side Impact Airbag Control Module fails to see the PCM message on the PCI Bus for 15 seconds the code will set.

POSSIBLE CAUSES
- PCM, PCI communication failure
- No PCM message
- Stored code or intermittent condition
- Active code present
- SIACM, No PCM message