Test AD: Message Center Switch Does Not Operate Corectly (High Series Instrument Cluster)

Pinpoint Test AD: The Message Center Switch Does Not Operate Correctly (High Series Instrument Cluster)









Normal Operation
The message center switch uses circuit CMC29 (GN/VT) to communicate the requested switch function to the instrument cluster message center. The message center switch is grounded through circuit RMC32 (GN/BU). Each message center switch uses a different resistance value allowing the instrument cluster to determine which switch is pressed.

Possible Causes
- circuit CMC29 (GN/VT) open, short to ground or short to voltage
- circuit RMC32 (GN/BU) open
- message center switch
- instrument cluster