Test G: The Instrument Cluster Does Not Respond To The Scan Tool

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

G1-G2:

G2-G4:

G5-G6:

Normal Operation
The instrument cluster communicates with the scan tool through the high speed controller area network (HS-CAN) and the medium speed controller area network (MS-CAN). Circuits 1908 (WH) (HS-CAN +) and 1909 (BK) (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), the transmission control module (TCM), the anti-lock brake system (ABS) module, the restraint control module (RCM) and the differential electronic module (DEM) and shares the MS-CAN network with the electronic automatic temperature control (EATC) module, the smart junction box (SJB), the audio unit, the satellite radio receiver, the driver seat module (DSM) and the digital versatile disc (DVD) player. Voltage for the instrument cluster is provided by circuits 295 (LB/PK), 483 (RD) and 1566 (RD/YE). Circuits 1203 (BK/LB) and 1205 (BK) provide ground.

Possible Causes
- Fuse(s)
- Circuit 295 (LB/PK) open
- Circuit 483 (RD) open
- Circuit 1203 (BK/LB) open
- Circuit 1205 (BK) open
- Circuit 1566 (RD/YE) open
- Circuit 1908 (WH) open (HS-CAN +)
- Circuit 1909 (BK) open (HS-CAN -)
- Circuit 2180 (WH/BK) open (MS-CAN +)
- Circuit 2181 (BK/YE) open (MS-CAN -)
- Instrument cluster