1. Turn the ignition switch to the ON Position.
2. Backprobe the wiper/washer switch connector C209 with a test light between terminal C and a good ground.

Did the test light illuminate?

--

Go to Step 2

Go to Step 5

1. Keep the ignition switch in the ON position.
2. Turn the wiper/washer switch to LO.
3. Connect a jumper wire from the motor to an external ground.

Does the wiper motor operate?

--

Go to Step 3

Go to Step 4

Repair the open in CKT 150.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

Replace the windshield wiper motor.

Refer to Windshield Wiper Motor Assembly Replacement.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

Check 25 Amp WSW fuse for an open circuit.

Is the fuse open?

--

Go to Step 7

Go to Step 6

Repair the open in CKT 143 between the fuse block and the windshield wiper/washer switch.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

1. Remove the blown fuse.
2. Connect an ammeter (0-30 AMP) across the fuse block terminals.
3. Operate the windshield wiper motor.

Is the amperage in the specified range?

25 A or above

Go to Step 8

Go to Step 11

1. Disconnect the connector from the wiper motor.
2. Replace the WSW fuse.
3. Turn the ignition switch to the ON position.
4. Actuate the wiper/washer switch several times.
5. Check the WSW fuse.

Is the fuse open?

--

Go to Step 9

Go to Step 10

Replace the windshield wiper motor.

Refer to Windshield Wiper Motor Assembly Replacement.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

Repair the short to ground in CKT 143

Is the repair complete?

--

Go to Wiper/Washer System Check

--

Replace the blown fuse

Is the replacement complete?

--

Go to Wiper/Washer System Check

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