Test A: No Communication With The Instrument Cluster

PINPOINT TEST A: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER

A1-A2:

Normal Operation
The instrument cluster communicates interactively with other electronic modules using the communication network. With the ignition switch in the START or RUN position, the instrument cluster receives voltage from the smart junction box (SJB) through circuits 640 (RD/YE), and 489 (PK/BK). With the ignition switch in the OFF position, the instrument cluster receives its keep-alive voltage from the SJB through circuit 3049 (BK/LG). The instrument cluster is grounded through circuits 57 (BK) and 570 (BK/WH).

Possible Causes
- fuse(s)
- circuit 57 (BK) open
- circuit 489 (PK/BK) open
- circuit 570 (BK/WH) open
- circuit 640 (RD/YE) open
- circuit 3049 (BK/LG) open
- instrument cluster