Symptom:
PUMP MOTOR CIRCUIT FAILURE
When Monitored and Set Condition:
PUMP MOTOR CIRCUIT FAILURE
When Monitored: Ignition On - Continuously
Set Condition: When the CAB detects the pump motor voltage is too low or high when
pump motor is enabled or disabled. The pump motor fails the slow down test after the end
of a pump motor event.
POSSIBLE CAUSES
PUMP MOTOR CIRCUIT FAILURE INTERMITTENT DTC
DAMAGED CAB/CAB HARNESS CONNECTOR
ABS PUMP FUSED B(+) CIRCUIT OPEN
PUMP MOTOR GROUND CIRCUITS OPEN
CAB - INTERNAL FAULT
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Turn the ignition on.
With the DRBIIIt, read DTCs.
With the DRBIIIt, erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the DRBIIIt, read DTCs.
Does the DRBIIIt display PUMP MOTOR CIRCUIT FAILURE?
All
Yes → Go To 4
No → Go To 2
2 Turn the ignition off.
Turn the ignition on.
With the DRBIIIt, actuate the Pump.
Did the Pump operate?
All
Yes → Go To 3
No → Go To 4
42
BRAKES (CAB)
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