Acm, Cluster Message Mismatch - Active - Dodge Neon 2001 Service Manual

AIRBAG
Symptom:

ACM, CLUSTER MESSAGE MISMATCH - ACTIVE

When Monitored and Set Condition:
ACM, CLUSTER MESSAGE MISMATCH - ACTIVE
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.
MIC, CLUSTER MESSAGE MISMATCH
ACM, CLUSTER MESSAGE MISMATCH
TEST
1 Note: Ensure communications with the Mechanical Instrument Cluster. If the MIC
does not communicate go to the Symptom List and select NO RESPONSE FROM
MIC.
With the DRBIII select PASSIVE RESTRAINTS, AIRBAG and MONITOR DIS-
PLAY.
With the DRBIII , read the WARNING LAMP STATUS monitors.
Cycle the ignition key and observe the LAMP ON BY MIC and LAMP REQ BY ACM
monitors for 6 to 8 seconds.
Does the LAMP ON BY MIC and LAMP REQ BY ACM monitors match?
YES
NO
2 WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND
WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
Repair
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
POSSIBLE CAUSES
ACTION
Go To 2
Replace instrument cluster circuit board.
Perform AIRBAG VERIFICATION TEST - VER 1.
Replace the Airbag Control Module in accordance with Service
Instructions. WARNING: make sure the battery is disconnected
and wait 2 minutes before proceeding.
Perform AIRBAG VERIFICATION TEST - VER 1.
18
APPLICABILITY
All
All