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

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

D1-D2:

D2-D3:

D4:

Normal Operation
The instrument cluster communicates with the diagnostic tool through the controller area network (CAN) circuits, 1908 (WH) and 1909 (BK). The instrument cluster also uses the standard corporate protocol (SCP) communication network, circuits 914 (TN/OG) and 915 (PK/LB) to communicates with SCP network modules. Check the CAN and SCP communication network circuits between the instrument cluster C220a and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open in the CAN or SCP circuits, damage to the DLC C251, damage to the instrument cluster C220a, or a problem in the in-line connectors.

Possible Causes
- CAN circuits 1908 (WH) or 1909 (BK) open
- SCP circuits 914 (TN/OG) or 915 (PK/LB) open
- instrument cluster C220a
- instrument cluster