Test A: No Communication With the Instrument Cluster

PINPOINT TEST A: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER

A1:

A1-A2:

Normal Operation
The instrument cluster communicates interactively with other electronic modules using the communication networks. With the ignition switch in the START or RUN position, the instrument cluster receives voltage from the central junction box (CJB) through circuits 640 (RD/YE) and 1003 (GY/YE). With the ignition switch in the RUN or ACC position, voltage is received from the CJB through circuit 489 (PK/BK). With the ignition switch in the OFF position, the instrument cluster receives its keep-alive voltage from the CJB through circuit 3049 (BK/LG). The instrument cluster grounding is accomplished through circuit 875 (BK/LB) and the bulb grounding is accomplished through circuit 57 (BK).

Possible Causes
- fuse(s)
- circuit 57 (BK) open
- circuit 489 (PK/BK) open
- circuit 640 (RD/YE) open
- circuit 875 (BK/LB) open
- circuit 1003 (GY/YE) open
- circuit 3049 (BK/LG) open
- instrument cluster