Rear Wiper Inoperative
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
Rear Wiper Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| 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. |
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| 1 | 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 |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 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 |
| 4 | Does the rear wiper motor operate when the rear washer switch is pressed? | Go to Step 6 | Go to Step 5 |
| 5 | Is the rear wiper only inoperative when the rear washer switch is pressed? | Go to Step 12 | Go to Step 6 |
| 6 |
|
Go to Step 7 | Go to Step 13 |
| 7 | 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 |
| 8 |
|
Go to Step 9 | Go to Step 18 |
| 9 | 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 |
| 10 | 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 |
| 11 |
|
Go to Step 24 | Go to Step 17 |
| 12 |
|
Go to Step 17 | Go to Step 15 |
| 13 | 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 |
| 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 |
| 15 | 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 |
| 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 |
| 17 | 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 |
| 18 | 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 | - |
| 19 | 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 | - |
| 20 | 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 | - |
| 21 | 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 | - |
| 22 | 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 | - |
| 23 | Replace the rear wiper motor module. Refer to Rear Window Wiper Control Module Replacement . Did you complete the replacement? |
Go to Step 25 | - |
| 24 | Replace the rear wiper motor. Refer to Rear Window Wiper Motor Replacement . Did you complete the replacement? |
Go to Step 25 | - |
| 25 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |