Test C: The Message Center Switch Does Not Operate Correctly

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

C1-C2:

C3-C4:

C5-C6:

Normal Operation
The instrument cluster sends a signal to the message center INFO switch on circuit 1411 (GY/OG), and to the message center SET switch on circuit 1410 (TN/OG), which communicates the requested switch function to the message center. The switches are grounded through circuit 570 (BK/WH).

Possible Causes
- circuit 570 (BK/WH) open
- circuit 1411 (GY/OG) open or short to ground
- circuit 1410 (TN/OG) open or short to ground
- message center SET switch
- message center INFO switch
- instrument cluster