FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Pump Motor Circuit

Symptom:
PUMP MOTOR CIRCUIT

When Monitored:
Ignition On - Continuously

Set Condition:
When the ABM 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.

Test 1-2:




Test 3-6:





POSSIBLE CAUSES
- INTERMITTENT DTC
- DAMAGED ABM/ABM HARNESS CONNECTOR
- ABS PUMP FUSED B(+) CIRCUIT OPEN
- PUMP MOTOR GROUND CIRCUITS OPEN
- ABM - INTERNAL FAULT