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Symptom: VALVE POWER FEED FAILURE When Monitored and Set Condition: VALVE POWER FEED FAILURE When Monitored: Ignition ON. ABS Power Relay closed. Valve command for a particular solenoid not present. Set Condition: Low feedback voltage from the low side of all the solenoids. POSSIBLE CAUSES INTERMITTENT DTC ABS VALVE FUSE ABS VALVE FUSED B(+) SUPPLY CIRCUIT OPEN ABS VALVE FUSED B(+) CIRCUIT OPEN ABS VALVE FUSED B(+) CIRCUIT INTERMITTENT SHORT TO GROUND ABS VALVE FUSED B(+) CIRCUIT SHORT TO GROUND DAMAGED CAB/CAB HARNESS CONNECTOR CAB - GROUND CIRCUIT OPEN CAB - INTERNAL FAULT TEST ACTION APPLICABILITY 1 Turn the ignition on. t, read DTC’s. With the DRBIII t, erase DTC’s. Turn the ignition off. t, read DTC’s. Does the DRBIII t display VALVE POWER FEED FAILURE? All Yes → Go To 2 No → Go To 10 2 Turn the ignition off. All Yes → Go To 3 No → Go To 6 33 BRAKES (20E) |