Erratic Display (Internal Cluster Failure)
- Perform instrument cluster self-test and check for DTCs. See INSTRUMENT CLUSTER SELF-TEST under SELF-DIAGNOSTIC SYSTEM. Go to next step.
- If odometer passes segment check, failure is not in the instrument cluster. Go to ERRATIC DISPLAY (BAD PCI BUS MESSAGE FROM BCM) . If odometer display does not work, remove instrument cluster from instrument panel. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check for power and ground at instrument cluster connector. See WIRING DIAGRAMS . If any problem is found, repair as necessary. If no problem is found, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION.