Test F: The Instrument Cluster Does Not Respond to the Diagnostic Tool
PINPOINT TEST F: THE INSTRUMENT CLUSTER DOES NOT RESPOND TO THE DIAGNOSTIC TOOLF1-F2:
F3-F4:
Normal Operation
The instrument cluster communicates with the diagnostic tool and all the modules on the high speed controller area network (CAN) through circuits VDB04 (WH/BU) and VDB05 (WH).
For the high speed CAN, the PCM and instrument cluster share communications network termination responsibilities with the use of a split termination resistor in each module. On the medium speed CAN, the smart junction box (SJB) and instrument cluster share communications network termination responsibilities with the use of a split termination resistor in each module. The instrument cluster also communicates with other modules on the medium speed CAN circuits VDB06 (GY/OG) and VDB07 (VT/OG). The instrument cluster serves as a gateway between the medium speed CAN and the high speed CAN network modules.
Check the high speed CAN circuits VDB04 (WH/BU) and VDB05 (WH) and the medium speed CAN circuits VDB06 (GY/OG) and VDB07 (VT/OG) between the instrument cluster C220 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 one of the high speed CAN circuits, damage to the DLC C251, damage to the instrument cluster C220, or a problem in an in-line connector.
Possible Causes
- high speed CAN data plus circuit VDB04 (WH/BU) open
- high speed CAN data minus circuit VDB05 (WH) open
- medium speed CAN data plus circuit VDB06 (GY/OG) open
- medium speed CAN data minus circuit VDB07 (VT/OG) open
- instrument cluster C220
- instrument cluster