Schematic Reference: Wiper/Washer Schematics

DEFINITION: This table diagnoses the rear washer pump inoperative and assumes that the rear wiper operates normally.

Did you review the Rear Wiper/Washer System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

1. Turn ON the ignition, with the engine OFF.
2. Press the washer switch to the wash position.

Do the washers operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Disconnect the rear washer pump. Refer to Rear Window Washer Pump Replacement for access.
2. Turn ON the ignition, with the engine OFF.
3. Connect a test light between the voltage supply side of the rear washer pump connector and a good ground.
4. Depress the rear washer switch to the wash position.

Does the test light illuminate when the rear washer switch is pressed to the wash position?

Go to Step 5

Go to Step 4

1. Disconnect the rear wiper/washer switch connector. Refer to Rear Window Wiper and Washer Switch Replacement for access.
2. Test for a high resistance or an open condition in the rear washer pump control circuit between the rear wiper/washer switch connector and the rear washer pump connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

Test the rear washer pump ground circuit for a high resistance or an open condition. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 7

Inspect for poor connections at the harness connector of the rear wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

Inspect for poor connections at the harness connector of the rear washer pump. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

Replace the rear wiper/washer switch. Refer to Rear Window Wiper and Washer Switch Replacement .

Did you complete the replacement?

Go to Step 10

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Replace the rear washer pump. Refer to Rear Window Washer Pump Replacement .

Did you complete the replacement?

Go to Step 10

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Operate the rear washers in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3