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Symptom: *ABS WARNING INDICATOR ALWAYS ON POSSIBLE CAUSES ABS RELAY STUCK ABS RELAY FUSED B+ CIRCUIT OPEN ABS RELAY CONTROL CIRCUIT OPEN CAB INTERNAL OPEN ABS INDICATOR DRIVER SHORT TO GROUND INSTRUMENT CLUSTER CONCERN TEST ACTION APPLICABILITY 1 Remove the ABS relay from PDC. All Yes → No → 2 Disconnect the Instrument Cluster C1 harness connector. All Yes → Repair the ABS Indicator circuit for a short to ground. No → Refer to symptom list for problems related to Instrument Cluster. 3 Install a substitute relay in place of the ABS relay. All Yes → Replace the ABS relay. No → 4 Remove the ABS relay from the PDC. All Yes → No → Repair the ABS relay Fused B+ circuit for an open. 55 BRAKES (CAB) |