Jeep Liberty KJ. Manual - part 307
WIPER PARK SWITCH FAILURE
For a complete wiring diagram Refer to Section 8W
•
When Monitored:
With the Wipers on (any speed).
•
Set Condition:
BCM fails to detect a park signal from the wiper motor for 8 consecutive seconds.
Possible Causes
MULTIFUNCTION SWITCH
FRONT WIPER MOTOR GROUND CIRCUIT OPEN
FRONT WIPER MOTOR LOW DRIVER CIRCUIT OPEN
FRONT WIPER MOTOR
FUSED IGNITION SWITCH OUTPUT CIRCUIT
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, erase all BCM DTC’s.
Turn the Wipers on.
With the scan tool, read DTCs.
Does the scan tool display: WIPER PARK SWITCH FAILURE?
Yes
>> Go To 2
No
>> The condition is not present at this time. Monitor scan tool parameters while wiggling the related wire
harness. Refer to any Technical Service Bulletins that may apply. Visually inspect the related wiring har-
ness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2.
FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
Turn the ignition off.
Disconnect the Front Wiper Motor harness connector.
Disconnect the Junction Block C3 harness connector.
Turn the ignition on.
Measure the voltage of the Wiper Park Switch Sense circuit in the Front Wiper Motor harness connector.
Is there any voltage present?
Yes
>> Repair the Wiper Park Switch Sense circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 3
8R - 20
WIPERS/WASHERS ELECTRICAL DIAGNOSTICS
KJ