Pump Motor Circuit - Jeep KJ Liberty 2005 Service Manual

Symptom:

PUMP MOTOR CIRCUIT

When Monitored and Set Condition:
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.
INTERMITTENT DTC
DAMAGED ABM/ABM HARNESS CONNECTOR
ABS PUMP FUSED B(+) CIRCUIT OPEN
PUMP MOTOR GROUND CIRCUITS OPEN
ABM - INTERNAL FAULT
TEST
1 Turn the ignition off.
Turn the ignition on.
With the DRBIII , read DTCs.
With the DRBIII , erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the DRBIII , read DTCs.
Does the DRBIII display PUMP MOTOR CIRCUIT?
Yes → Go To 4
→ Go To 2
No
2 Turn the ignition off.
Turn the ignition on.
With the DRBIII , actuate the Pump.
Did the Pump operate?
Yes → Go To 3
→ Go To 4
No
POSSIBLE CAUSES
ACTION
43
BRAKES (25E)
APPLICABILITY
All
All