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Symptom: *PRNDL INDICATOR MALFUNCTION (4.7L) POSSIBLE CAUSES *PCI BUS COMMUNICATIONS - INSTRUMENT CLUSTER *OBSERVE THE PRNDL INDICATORS *MONITOR THE PRNDL INDICATOR WHILE SHIFTING GEARS *INSTRUMENT CLUSTER TEST ACTION APPLICABILITY 1 Turn the ignition on. t, select Body, then Electro/Mech Cluster. Was the DRBIII t able to communicate with the Instrument Cluster? All Yes → No → Refer to the COMMUNICATION category and perform the ap- 2 Observe the PRNDL indicators while cycling the ignition from the off to the on All Yes → No → Replace the Instrument Cluster in accordance with the Service 3 Turn the ignition on. t, select Trans, Monitor Display, Shift Lever, then SLP. Monitor the Shift Lever status. All Yes → Replace the Instrument Cluster in accordance with the Service No → Refer to the TRANSMISSION category and perform the appro- 237 INSTRUMENT CLUSTER |