ACM Cluster Messages Mismatch (Stored)

Test 1:

SYMPTOM
ACM, CLUSTER MESSAGE MISMATCH - STORED

WHEN MONITORED
After the MIC bulb test is completed, the ACM compares the ACM warning lamp request (ON or OFF) and the MIC warning lamp state (ON or OFF) PCI Bus messages. Each message is transmitted one time per second or when a change in the lamp state occurs.

SET CONDITION
If the ACM warning lamp request (ON or OFF) and the MIC warning lamp state (ON or OFF) messages do not match for 3 consecutive transmissions, the code will set.

POSSIBLE CAUSES
- Active or stored code present
- Stored code or intermittent condition