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 the ignition ON, 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 in Wiring Systems

Go to Step 3

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

Go to Step 11

Go to Step 4

Does the rear washer pump operate when the rear washer switch is pressed?

Go to Step 14

Go to Step 5

1. Disconnect the harness connector of the rear wiper switch.
2. Turn the ignition ON, with the engine OFF.
3. 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 6

Go to Step 15

Connect a 20-ampere fused jumper wire from the accessory voltage circuit to the Delay/On signal circuit of the rear wiper/washer switch.

Does the rear wiper motor operate?

Go to Step 24

Go to Step 7

1. Turn OFF the ignition.
2. Disconnect the harness connector of the rear wiper/washer module.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp from the Delay/On signal circuit of the rear wiper/washer switch to a good ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 28

Connect a test lamp from the Delay/On signal circuit of the rear wiper/washer switch to the ground circuit of the rear wiper/washer module.

Does the test lamp illuminate?

Go to Step 9

Go to Step 29

1. Turn OFF the ignition.
2. Connect the harness connector of the rear wiper/washer module.
3. Disconnect the harness connector of the rear wiper motor.
4. Turn ON the ignition, with the engine OFF.
5. Connect a test lamp from the supply voltage circuit of the rear wiper motor to a good ground.

Does the test lamp illuminate?

Go to Step 10

Go to Step 19

Connect a test lamp from the supply voltage circuit to the ground circuit of the rear wiper motor.

Does the test lamp illuminate?

Go to Step 26

Go to Step 20

1. Turn OFF the ignition.
2. Disconnect the harness connector of the rear wiper/washer module.
3. Turn the ignition ON, with the engine OFF.
4. Place the rear wiper switch in the Off position.
5. Connect a test lamp from the Off/Delay signal circuit of the rear wiper/washer switch to a good ground.

Does the test lamp illuminate?

Go to Step 21

Go to Step 12

1. Connect a test lamp from the Delay/On signal circuit of the rear wiper/washer switch to a good ground.
2. Place the rear wiper/washer switch in the On position.

Does the test lamp illuminate?

Go to Step 13

Go to Step 22

1. Disconnect the harness connector of the rear wiper motor.
2. Connect a test lamp from the 12 V reference circuit of the rear wiper motor park switch to a good ground.

Does the test lamp illuminate?

Go to Step 26

Go to Step 23

1. Turn OFF the ignition.
2. Disconnect the harness connector of the rear wiper/washer module.
3. Turn the ignition ON, with the engine OFF.
4. Connect a test lamp from the control circuit of the rear washer pump to a good ground.
5. Depress the rear washer switch.

Does the test lamp illuminate?

Go to Step 25

Go to Step 30

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 in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 16

Test the Delay/On signal circuit of the rear wiper/washer switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 17

Test the Off/Delay signal circuit of the rear wiper/washer switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 18

Test the control circuit of the rear washer pump for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 27

Test the supply voltage circuit of the rear wiper motor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 25

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

Did you find and correct the condition?

Go to Step 34

Go to Step 25

Test the Off/Delay signal circuit of the rear wiper/washer switch for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 24

Test the Delay/On signal circuit of the rear wiper/washer switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 24

Test the 12 V reference circuit of the rear wiper motor park switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 34

Go to Step 25

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 34

Go to Step 31

Inspect for poor connections at the harness connector of the rear wiper/washer module. 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 34

Go to Step 32

Inspect for poor connections at the harness connector of the rear wiper motor. 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 34

Go to Step 33

Repair a short to ground in the supply voltage circuit of the rear wiper motor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Repair an open or high resistance in the Delay/On signal circuit of the rear wiper/washer switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

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

Did you complete the repair?

Go to Step 34

--

Repair an open or high resistance in the control circuit of the rear washer pump. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 34

--

Replace the rear wiper/washer switch. Refer to Accessory Switch Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 34

--

Replace the rear wiper/washer module. Refer to Windshield Wiper System Module Replacement .

Did you complete the replacement?

Go to Step 34

--

Replace the rear wiper motor. Refer to Liftgate Wiper Motor Replacement .

Did you complete the replacement?

Go to Step 34

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3