Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Master Electrical Component List

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Turn the ignition to the ON position.

Are the windshield wipers ON?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

Remove the WPR2 relay.

Are the windshield wipers ON?

Go to Step 4

Go to Step 7

Are the windshield wipers operating at a high speed?

Go to Step 5

Go to Step 6

Test for a short to battery positive voltage in the windshield wiper motor high speed circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 24

Go to Step 20

Test for a short to battery positive voltage in the windshield wiper motor low speed circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 24

Go to Step 20

Using a test lamp connected to ground, probe the WPR2 relay control circuit at the underhood fuse block.

Does the test lamp illuminate?

Go to Step 13

Go to Step 8

1. Install the WPR2 relay.
2. Remove the WPR1 relay.

Are the windshield wipers ON?

Go to Step 20

Go to Step 9

Using a test lamp connected to ground, probe the WPR1 relay control circuit.

Does the test lamp illuminate?

Go to Step 10

Go to Step 21

1. Install the WPR1 relay.
2. Disconnect the windshield wiper/washer switch.

Are the windshield wipers ON?

Go to Step 11

Go to Step 22

1. Disconnect the body control module (BCM) connector C3.
2. Using a test lamp connected to battery positive voltage, probe the windshield wiper switch low signal circuit at the windshield wiper/washer switch.

Does the test lamp illuminate?

Go to Step 17

Go to Step 12

1. Disconnect the BCM connector C1.
2. Remove the WPR1 relay.
3. Using a test lamp connected to ground, probe the WPR1 relay control circuit at the underhood electrical center.

Does the test lamp illuminate?

Go to Step 18

Go to Step 23

1. Disconnect the windshield wiper/washer switch.
2. Using a test lamp connected to ground, probe the WPR1 relay control circuit at the underhood electrical center.

Does the test lamp illuminate?

Go to Step 14

Go to Step 22

1. Disconnect the BCM connector C3.
2. Using a test lamp connected to battery positive voltage, probe the windshield wiper switch high signal circuit.

Does the test lamp illuminate?

Go to Step 19

Go to Step 15

1. Disconnect the BCM connector C1.
2. Using a test lamp connected to ground, probe the WPR2 relay control circuit at the BCM.

Does the test lamp illuminate?

Go to Step 16

Go to Step 23

Test for a short to ground in the WPR2 relay control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 24

Go to Step 20

Repair a short to ground in the windshield wiper switch low signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 24

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Repair a short to battery positive voltage in the WPR1 relay control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 24

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Repair a short to ground in the windshield wiper switch high signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 24

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Replace the underhood electrical fuse block. Refer to Underhood Electrical Center or Junction Block Replacement .

Did you complete the replacement?

Go to Step 24

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Replace the WPR1 relay. Refer to Relay Replacement .

Did you complete the replacement?

Go to Step 24

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Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement .

Did you complete the repair?

Go to Step 24

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Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 24

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3