No Cluster Messages

Test 1 - Test 2:

Test 3 - Test 4:

SYMPTOM
NO CLUSTER MESSAGE

WHEN MONITORED
With ignition on, the ACM monitors the PCI Bus for a message from the MIC containing the airbag warning indicator status. The MIC transmits the message one time at ignition on, lamp state change, or in response to the ACM message.

SET CONDITION
If the MIC message is not received for 10 consecutive seconds, the code will set.

POSSIBLE CAUSES
- MIC, communication failure
- ACM, no cluster messages
- Stored code or intermittent condition
- Active code present