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Symptom: CAB INTERNAL FAILURE When Monitored and Set Condition: CAB INTERNAL FAILURE When Monitored: Ignition on. The CAB monitors the Fused B(+) circuit at all times for proper system voltage. Set Condition: If the Fused B(+) voltage is missing when the CAB detects that an internal main driver is not 9on9, the Diagnostic Trouble Code (DTC) is set. POSSIBLE CAUSES INTERMITTENT DTC DAMAGED CAB/CAB HARNESS CONNECTOR CAB - GROUND CIRCUIT OPEN ABS VALVE FUSED B(+) CIRCUIT OPEN ABS PUMP FUSED B(+) CIRCUIT OPEN CAB - 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 CAB INTERNAL FAILURE? All Yes → Go To 2 No → Go To 6 2 Turn the ignition off. All Yes → Repair as necessary. Perform ABS VERIFICATION TEST - VER 1. No → Go To 3 12 BRAKES (CAB) |