Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: The rear wiper motor is inoperative in one or more modes, the rear washer pump may or may not operate.

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. Operate the rear wiper/washer system in all the switch positions.

Does the rear wiper/washer system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Inspect the courtesy lamps for proper operation. Refer to Interior Lighting Systems Description and Operation .

Do the courtesy lamps operate properly?

Go to Step 4

Go to Symptoms - Lighting Systems

Does the rear wiper motor operate when the rear washer switch is pressed?

Go to Step 6

Go to Step 5

Is the rear wiper only inoperative when the rear washer switch is pressed?

Go to Step 12

Go to Step 6

1. Disconnect the harness connector of the rear wiper switch.
2. Connect a test lamp from the accessory voltage circuit of the rear wiper/washer switch to a good ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 13

Connect a 15-amp fused jumper wire from the accessory voltage circuit to the rear window wiper switch signal circuit.

Does the rear wiper motor operate?

Go to Step 16

Go to Step 8

1. Remove the fused jumper wire and connect the rear wiper switch connector.
2. Disconnect the harness connector of the rear window wiper module.
3. Connect a test lamp from the rear window wiper switch signal circuit to a good ground.
4. Turn the rear wiper switch to the 2 position.

Does the test lamp illuminate?

Go to Step 9

Go to Step 18

Connect a test lamp from battery voltage to the ground circuit of the rear wiper module.

Does the test lamp illuminate?

Go to Step 10

Go to Step 19

Connect a test lamp from the battery voltage circuit of the rear wiper module to a good ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 20

1. Connect the rear wiper module harness connector.
2. Disconnect the wiper motor to module connector.
3. Connect a test lamp across the motor control circuit terminals in the module.
4. Turn the rear wiper switch to the 2 position.

Does the test lamp illuminate?

Go to Step 24

Go to Step 17

1. Disconnect the harness connector of the rear wiper/washer module.
2. Connect a test lamp from the rear window washer switch signal circuit to a good ground.
3. Depress the rear washer switch.

Does the test lamp illuminate?

Go to Step 17

Go to Step 15

Test the accessory voltage circuit of the rear wiper/washer switch for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 25

Go to Step 14

Test the rear window wiper switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 25

Go to Step 21

Test the rear window washer switch signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 25

Go to Step 16

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 .

Did you find and correct the condition?

Go to Step 25

Go to Step 22

Inspect for poor connections at the harness connector of the rear wiper module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 25

Go to Step 23

Repair an open or high resistance in the rear window wiper switch signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 25

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Repair an open or high resistance in the ground circuit of the rear wiper module. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 25

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Repair an open or a short to ground in the battery voltage circuit of the rear wiper module. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 25

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Repair a short to ground in the rear window washer switch signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 25

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

Did you complete the replacement?

Go to Step 25

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Replace the rear wiper motor module. Refer to Rear Window Wiper Control Module Replacement .

Did you complete the replacement?

Go to Step 25

--

Replace the rear wiper motor. Refer to Rear Window Wiper Motor Replacement .

Did you complete the replacement?

Go to Step 25

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3