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.
2. Operate the rear wiper/washer system in all the switch positions, including the washer position.

Does the rear wiper/washer system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

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

Go to Step 4

Go to Step 8

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. Observe the Rear Closure Ajar Switch parameter in body control module (BCM) Data Display/Body Rear End screen, with the liftgate closed and opened.

Did the parameter displayed Open and the Closed accordingly?

Go to Step 5

Go to Courtesy Lamps Always On

1. Disconnect the rear wiper motor/module connector.
2. Connect a test lamp from the rear wiper switch signal circuit terminal in the harness connector to a good ground.
3. Operate the rear window wiper switch to the WASH position.

Does the test lamp illuminate?

Go to Step 6

Go to Step 9

Connect a test lamp from the battery supply circuit terminal in the wiper motor harness connector to a good ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 10

Connect a test lamp from the battery supply circuit terminal to the ground circuit terminal in the wiper motor harness connector.

Does the test lamp illuminate?

Go to Step 13

Go to Step 11

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

Did you find and correct the condition?

Go to Step 16

Go to Step 12

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

Did you find and correct the condition?

Go to Step 16

Go to Step 12

Repair the rear wiper motor battery supply circuit for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs .

Is the repair complete?

Go to Step 16

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Repair the rear wiper motor ground circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs .

Is the repair complete?

Go to Step 16

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Inspect for poor connections at the rear wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

Go to Step 16

Go to Step 14

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

Did you find and correct the condition?

Go to Step 16

Go to Step 15

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

Is the repair complete?

Go to Step 16

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

Is the repair complete?

Go to Step 16

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2