Diagnosis And Testing - Electronic Vehicle Information Center

A DRB III® scan tool, is required for checking the PCI Data Bus circuit and the EVIC.

1. Remove the instrument, cluster. Check for battery voltage at the fused B(+) circuit cavity., of the cluster. If OK, go to Step 2. If not OK, repair the open fused B(+) circuit as required.
2. Turn the ignition switch to the Off position. Disconnect and isolate the battery negative cable. Check for continuity between the ground circuit cavity of the cluster and a good ground. There should be continuity. If OK, go to Step 3. If not OK, repair the open ground circuit as required.
3. Connect negative battery cable. Turn the ignition switch to the On position. Check for battery voltage at the fused ignition switch output (run/start) circuit cavity of the cluster. If OK, the voltage and ground supply to the cluster is OK at this time. If not OK, repair the open fused ignition switch output (run/start) circuit as required.