Test A: No Communication With the Instrument Cluster

Pinpoint Test A: No Communication With The Instrument Cluster









Normal Operation
The instrument cluster communicates interactively with the diagnostic tool and other electronic modules using both the medium speed and high speed controller area network (HS-CAN). With the ignition switch in the START or RUN position, the instrument cluster receives voltage from the ignition switch through circuit CDC34 (WH/OG). With the ignition switch in the OFF position, the instrument cluster receives its keep-alive voltage from the smart junction box (SJB) through circuit SBP24 (VT/RD). The instrument cluster grounding is through circuit GD145 (BK/BU) and circuit RMC32 (GN/BU).

Possible Causes
- fuse
- circuit CDC34 (WH/OG) open
- circuit GD145 (BK/BU) open
- circuit RMC32 (GN/BU) open
- circuit SBP24 (VT/RD) open
- instrument cluster