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Symptom: ABM INTERNAL When Monitored and Set Condition: ABM INTERNAL When Monitored: Ignition On - Continuously Set Condition: When one of two internal CPUs, fails the programmed self test within the ABM. POSSIBLE CAUSES INTERMITTENT DTC DAMAGED ABM/ABM HARNESS CONNECTOR FUSED RUN RELAY OUTPUT CIRCUIT OPEN ABS VALVE FUSED B(+) CIRCUIT OPEN ABS PUMP FUSED B(+) CIRCUIT OPEN ABM - GROUND CIRCUIT OPEN ABM - INTERNAL FAULT TEST ACTION APPLICABILITY 1 Turn the ignition on. t, read DTCs. With the DRBIII t, erase DTCs. Turn the ignition off. t, read DTCs. Does the DRBIII t display ABM INTERNAL? All Yes → Go To 2 No → Go To 7 2 Turn the ignition off. All Yes → Repair as necessary. Perform ABS VERIFICATION TEST - VER 1. No → Go To 3 10 BRAKES (25E) |