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Home >> Ford >> 2006 >> Focus L4-2.3L VIN Z >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test C: The Instrument Cluster Does Not Respond To The Diagnostic Tool
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Test C: The Instrument Cluster Does Not Respond To The Diagnostic Tool

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


C1-C2:






Normal Operation
The instrument cluster communicates with the diagnostic tool through the controller area network (CAN), circuits 4-EC7B (GY/RD) and 5-EC7B (BU/RD). Check circuits 4-EC7B (GY/RD) and 5-EC7B (BU/RD) between the instrument cluster C2220 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 C2220, or a problem in an in-line connector.

Possible Causes
- CAN circuit 4-EC7B (GY/RD) open
- CAN circuit 5-EC7B (BU/RD) open
- instrument cluster C2220
- instrument cluster
- DLC C251
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