Front Washer Pump Inoperative

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

Testing

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? If yes, replace the Front Washer Pump. Perform BODY VERIFICATION TEST . If no, go to next step.
Turn the ignition off. Using a 12-volt test light connected to 12 volts, check the Front Washer Pump Ground circuit. Does the test light illuminate brightly? If yes, go to next step. If no, repair the Front Washer Pump Ground Circuit for an open. Perform BODY VERIFICATION TEST .
Disconnect the right side Multifunction Switch harness connector. Connect a jumper wire between the Fused Ignition Switch Output circuit and the Front Washer Pump Sense circuit in the Multifunction Switch harness connector. Turn the ignition on. Does the Front Washer Pump operate? If yes, replace the Multifunction Switch. Perform BODY VERIFICATION TEST . If no, go to next step.
Turn the ignition off. Disconnect the Body Control Module from Junction Block. Measure the resistance of the Front Washer Pump Sense circuit. Is the resistance above 5.0 ohms? If yes, repair the Front Washer Pump Sense Circuit for an open. Perform BODY VERIFICATION TEST . If no, go to next step.
Measure the resistance of the Front Washer Pump Driver circuit. Is the resistance above 5.0 ohms? If yes, repair the Front Washer Pump Driver Circuit for an open. Perform BODY VERIFICATION TEST . If no, go to next step.
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? If 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 . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST .