Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: Windshield wipers are inoperative in all modes.

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

1. Turn ON the ignition.
2. Attempt to operate the windshield wipers in all modes.

Are the windshield wipers inoperative in all modes?

Go to Step 3

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

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Windshield Wiper Switch parameter in the Body Control Module data list.
4. Place the wiper switch in the LOW speed position.

Does the Windshield Wiper Switch parameter display Low?

Go to Step 6

Go to Step 4

1. Turn OFF the ignition.
2. Remove the wiper RUN/ACC relay. Refer to Relay Replacement in Wiring Systems.
3. Turn ON the ignition, with the engine OFF.
4. Probe the battery positive voltage circuit of the wiper RUN/ACC relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 14

1. Turn OFF the ignition.
2. Disconnect the windshield wiper/washer switch.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp from the battery positive voltage circuit of the wiper switch connector to a good ground.

Does the test lamp illuminate?

Go to Step 10

Go to Step 16

6

1. Turn the ignition OFF.
2. Remove the wiper HI/LO relay. Refer to Relay Replacement in Wiring Systems.
3. Turn the ignition ON, with the engine OFF.
4. Place the windshield wiper/washer switch in the LOW position.
5. Probe the voltage supply circuit of the HI/LO relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 7

1. Turn OFF the ignition.
2. Remove the wiper ON/OFF relay. Refer to Relay Replacement in Wiring Systems.
3. Turn ON the ignition, with the engine OFF.
4. Probe the battery positive voltage circuit of the wiper ON/OFF relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 12

Go to Step 15

1. Turn OFF the ignition.
2. Install the wiper HI/LO and ON/OFF relays.
3. Disconnect the windshield wiper motor.
4. Turn ON the ignition, with the engine OFF
5. Connect a test lamp from the wiper motor low speed circuit of the wiper motor connector to a good ground.
6. Place the wiper switch in the LOW speed position.

Does the test lamp illuminate?

Go to Step 9

Go to Step 13

1. Connect the test lamp between the low speed circuit of the wiper motor connector and the ground circuit of the wiper motor connector.
2. Place the wiper switch in the LOW speed position.

Does the test lamp illuminate?

Go to Step 11

Go to Step 17

Inspect for poor connections at the harness connector of the windshield 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 22

Go to Step 18

Inspect for poor connections at the harness connector of the 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 22

Go to Step 19

Inspect for poor connections at the ON/OFF relay. 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 22

Go to Step 20

Inspect for poor connections at the HI/LO relay. 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 22

Go to Step 21

Repair the short to ground or open in the battery positive voltage circuit of the wiper RUN/ACC relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

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Repair the short to ground or open in the battery positive voltage circuit of the wiper On/Off relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

--

Repair the short to ground or open in the battery positive voltage circuit of the windshield wiper/washer switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

--

Repair the open in the ground circuit of the windshield wiper motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 22

Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement .

Did you complete the replacement?

Go to Step 22

--

Replace the wiper motor. Refer to Wiper Motor, Wiper System Module Replacement .

Did you complete the replacement?

Go to Step 22

--

Replace the wiper ON/OFF relay. Refer to Relay Replacement in Wiring Systems.

Did you complete the replacement?

Go to Step 22

--

Replace the wiper HI/LO relay. Refer to Relay Replacement in Wiring Systems.

Did you complete the replacement?

Go to Step 22

1. Reconnect all previous disconnected components.
2. Clear all DTCs with a scan tool.
3. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2