Jeep Liberty KJ. Manual — part 303
•
When Monitored:
Possible Causes
•
Set Condition:
Possible Causes
Possible Causes
FRONT WASHER PUMP
FRONT WASHER PUMP GROUND CIRCUIT OPEN
MULTIFUNCTION SWITCH
FRONT WASHER PUMP SENSE CIRCUIT OPEN
FRONT WASHER PUMP DRIVER CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
BODY CONTROL MODULE
Diagnostic Test
1.
FRONT WASHER PUMP
Turn the ignition off.
Disconnect the Front Washer Pump harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Front Washer
Pump Driver circuit.
Actuate the Front Washers.
Does the test light illuminate brightly?
Yes
>> Replace the Front Washer Pump.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 2
2.
FRONT WASHER PUMP GROUND CIRCUIT OPEN
Turn the ignition off.
Disconnect the Front Washer Pump.
Using a 12-volt test light connected to 12-volts, check the Front Washer
Pump Ground circuit.
Does the test light illuminate brightly?
Yes
>> Go To 3
No
>> Repair the Front Washer Pump Ground Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
8R - 4
WIPERS/WASHERS ELECTRICAL DIAGNOSTICS
KJ
3.
MULTIFUNCTION SWITCH
Turn the ignition off.
Disconnect the right side Multifunction Switch C2 harness connector.
Connect a jumper wire between the Fused Ignition Switch Output circuit
and the Front Washer Pump Driver circuit in the Multifunction Switch
harness connector.
Turn the ignition on.
Does the Front Washer Pump operate?
Yes
>> Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 4
4.
FRONT WASHER PUMP SENSE CIRCUIT OPEN
Turn the ignition off.
Disconnect the right side Multifunction Switch.
Disconnect the Body Control Module.
Measure the resistance of the Front Washer Pump Sense circuit.
Is the resistance above 5.0 ohms?
Yes
>> Repair the Front Washer Pump Sense Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 5
5.
FRONT WASHER PUMP DRIVER CIRCUIT OPEN
Turn the ignition off.
Disconnect the Front Washer Pump.
Disconnect the Body Control Module from the Junction Block.
Measure the resistance of the Front Washer Pump Driver circuit.
Is the resistance above 5.0 ohms?
Yes
>> Repair the Front Washer Pump Driver Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Go To 6
KJ
WIPERS/WASHERS ELECTRICAL DIAGNOSTICS
8R - 5
6.
FUSED IGNITION SWITCH OUTPUT OPEN
Turn the ignition off.
Disconnect the Multifunction Switch.
Using a 12-volt test light connected to ground, check the Fused Ignition
Switch Output circuit.
Does the test light illuminate brightly?
Yes
>> Repair the Fused Ignition Switch Output circuit for an open.
If the fuse is open make sure to check for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
>> Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
8R - 6
WIPERS/WASHERS ELECTRICAL DIAGNOSTICS
KJ
FRONT WIPER LOW SPEED INOPERATIVE
For a complete wiring diagram Refer to Section 8W
KJ
WIPERS/WASHERS ELECTRICAL DIAGNOSTICS
8R - 7
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