Test B: The Message Center Switch Does Not Operate Correctly

PINPOINT TEST B: THE MESSAGE CENTER SWITCH DOES NOT OPERATE CORRECTLY

Normal Operation
The message center switch is hardwired to the instrument cluster (IC) through circuits CMC29 (GN/VT) and RMC27 (WH/BN). To communicate the requested switch function, each message center switch button uses a different resistance value, allowing the instrument cluster (IC) to determine which switch is pressed.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Message center switch
- Instrument cluster (IC)

B1-B3:

B3-B5:

B5-B6: