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

Normal Operation
The instrument cluster 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 network connection to the instrument cluster and circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the medium speed controller area network (MS-CAN) connection to the instrument cluster. The instrument cluster shares the HS-CAN network with the PCM, the ABS module, the four wheel drive (4WD) control module, the restraints control module (RCM), the power steering control module and the occupant classification sensor module. For Hybrid vehicles, the instrument cluster also shares the HS-CAN network with the transmission control module (TCM) and traction battery control module (TBCM).

The instrument cluster shares the MS-CAN network with the smart junction box (SJB), the electronic automatic temperature control (EATC) or electronic manual temperature control (EMTC) module, the audio unit, the satellite radio receiver, the front control interface module (FCIM) and front display interface module. Voltage for the instrument cluster is provided by circuits CBP29 (WH/VT), and SBP26 (YE/RD). Circuits GD112 (BK/GN) and GD114 (BK/BU) provide ground.

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

D1-D3:

D3-D4:

D5: