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

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

D1-D2:

D2-D3:

D4-D5:

Normal Operation
The instrument cluster communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits 1908 (WH) (HS-CAN +) and 1909 (BK) (HS-CAN -) provide the HS-CAN network connection to the instrument cluster and circuits 1847 (WH/OG) (MS-CAN +) and 1848 (PK/OG) (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 anti-lock brake system (ABS) module and the four wheel drive (4WD) control module and shares the MS-CAN network with the smart junction box (SJB). Voltage for the instrument cluster is provided by circuits 956 (OG/LG), 1002 (BK/PK) and 3049 (BK/LG). Circuits 57 (BK) and 570 (BK/WH) provide ground.

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 570 (BK/WH) open
- Circuit 956 (OG/LG) open
- Circuit 1002 (BK/PK) open
- Circuit 3049 (BK/LG) open
- Circuit 1908 (WH) open (HS-CAN +)
- Circuit 1909 (BK) open (HS-CAN -)
- Instrument cluster