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

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

Normal Operation
The instrument cluster (IC) communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits VDB04 (WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the HS-CAN connection to the IC and circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the MS-CAN connection to the IC. The IC shares the HS-CAN with the PCM, the transmission control module (TCM) (if equipped), the ABS module, the restraints control module (RCM), the 4X4 control module (if equipped) and the occupant classification system module (OCSM). The IC shares the MS-CAN with the smart junction box (SJB), the heating ventilation air conditioning (HVAC) module (if equipped), the audio control module (ACM), the satellite digital audio receiver system (SDARS) module (if equipped), the driver seat module (DSM) (if equipped), the parking aid module (PAM) (if equipped), the PRB module (if equipped) and the rear entertainment module (RETM) (if equipped). Voltage for the IC is provided by circuits CDC34 (WH/OG) and SBP24 (VT/RD). Circuit GD145 (BK/BU) provides ground.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- IC

G1-G3:

G3-G4:

G5: