2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*LOW WASH MESSAGE NOT OPERATING PROPERLY





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
WASHER FLUID LEVEL SWITCH ALWAYS CLOSED
 
(W1) LOW WASHER FLUID SENSE CIRCUIT OPEN
 
(W1) LOW WASHER FLUID SENSE CIRCUIT SHORT TO GROUND
 
WASHER FLUID LEVEL SWITCH ALWAYS OPEN
 
(Z931) WASHER FLUID LEVEL SWITCH GROUND CIRCUIT OPEN
 
INSTRUMENT CLUSTER
 




Diagnostic Test

1. FAULT DESCRIPTION

NOTE: Ensure that the Washer Fluid reservoir is filled and the Fluid Level Switch connector is properly connected before proceeding with this test.


Turn the ignition on and wait approximately 1 minute.

Is the LOWASH message always displayed?

Yes


No

2. WASHER FLUID LEVEL SWITCH ALWAYS CLOSED



Turn the ignition off.
Disconnect the Washer Fluid Level Switch harness connector.
Turn the ignition on and wait approximately 1 minute.

Does the VF display: LOWASH?

Yes


No

3. WASHER FLUID LEVEL SWITCH ALWAYS OPEN



Turn the ignition off.
Disconnect the Washer Fluid Level Switch harness connector.
Connect a jumper wire between cavity 1 and cavity 2.
Turn the ignition on and wait approximately 1 minute.

Does the VF display: LOWASH?

Yes


No

4. WASHER FLUID LEVEL SWITCH



Turn the ignition off.
Disconnect the Washer Fluid Level Switch harness connector.
Measure the resistance between ground and the (Z931) Washer Fluid Level Switch Ground circuit.

Is the resistance below 5.0 ohms?

Yes


No

5. (W1) LOW WASHER FLUID SENSE CIRCUIT OPEN



Turn the ignition off.
Disconnect the Washer Fluid Level Switch harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance of the (W1) Low Washer Fluid Sense circuit.

Is the resistance below 5.0 ohms?

Yes


No