Pump Motor Not Working Properly

Test 1-2:

Test 3-8:

Test 9-11:

Symptom:
PUMP MOTOR CIRCUIT NOT WORKING PROPERLY

When Monitored and Set Condition:
PUMP MOTOR CIRCUIT NOT WORKING PROPERLY

When Monitored: Ignition on. The CAB monitors the pump at all times. The CAB commands the pump on at 19 Km/h (12 mph) to check its operation, provided the brake is not applied. If the driver has their foot on the brake, the test will run at 39 Km/h (24 mph).

Set Condition: The DTC is stored when the CAB detects that the pump cannot run when commanded on OR is running erroneously. If the pump is off at the end of an ABS stop when the pump is commanded on, or if the pump is on when the pump is commanded off, the DTC is set.

POSSIBLE CAUSES
ABS PUMP FUSE #13 DEFECTIVE
CAB CONNECTOR OBSERVABLE DEFECT
FUSED B+ CIRCUIT OPEN
CAB GROUND CIRCUITS OPEN
PUMP MOTOR TERMINAL CONNECTOR OBSERVABLE DEFECT
PUMP MOTOR WIRING HARNESS OBSERVABLE DEFECT
PUMP MOTOR/HCU DEFECTIVE
CAB DEFECTIVE