Test C: The Instrument Cluster Does Not Respond To the Scan Tool

PINPOINT TEST C: THE INSTRUMENT CLUSTER DOES NOT RESPOND TO THE SCAN TOOL

C1:

C1-C3:

C4-C5:

Normal Operation
The instrument cluster communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits 1827 (WH/LG) (HS-CAN +) and 1828 (PK/LG) (HS-CAN -) provide the HS-CAN network connection to the instrument cluster and circuits 2180 (WH/BK) (MS-CAN +) and 2181 (BK/YE) (MS-CAN -) provide the MS-CAN network connection to the instrument cluster. The instrument cluster shares the HS-CAN network with the powertrain control module (PCM), and the anti-lock brake system (ABS) module (if equipped). Voltage for the instrument cluster is provided by circuits 295 (LB/PK), 729 (RD/WH) and 1044 (WH/YE). Circuits 57 (BK) and 938 (BK/LG) provide ground.

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 295 (LB/PK) open
- Circuit 729 (RD/WH) open
- Circuit 938 (BK/LG) open
- Circuit 1044 (WH/YE) open
- Circuit 1827 (WH/LG) open (HS-CAN +)
- Circuit 1828 (PK/LG) open (HS-CAN -)
- Instrument cluster