Pinpoint Test 4: The Instrument Cluster Does Not Respond to the Scan Tool

PINPOINT TEST 4: 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 (W/L) (HS-CAN +) and (W) (HS-CAN -) provide the HS-CAN network connection to the instrument cluster and circuits (GY/O) (MS-CAN +) and (V/O) (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.

Possible Causes
- Fuse
- Wiring, terminals or connectors
- Instrument cluster

Diagnostic Procedure

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Step 1-Step 3:

Step 4-Step 5: