Washers Inoperative
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Washers Inoperative Diagnostic Test
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views DEFINITION: The windshield washer is inoperative. |
||||
| 1 | Did you perform the Wiper/Washer Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Wiper/Washer |
| 2 |
|
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Do the windshield washer wipers operate when the windshield washer switch is pressed? | - | Go to Step 6 | Go to Step 4 |
| 4 |
|
0.5 Ω | Go to Step 15 | Go to Step 5 |
| 5 | Test the following circuits for high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems.
Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 13 |
| 6 |
|
- | Go to Step 7 | Go to Step 9 |
| 7 |
|
- | Go to Step 8 | Go to Step 10 |
| 8 |
|
- | Go to Step 18 | Go to Step 11 |
| 9 | Replace the underhood fuse block. Is the repair complete? |
- | Go to Step 20 | - |
| 10 | Test the windshield washer relay control circuit 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 20 | Go to Step 15 |
| 11 | Test the windshield washer pump control circuit 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 20 | Go to Step 12 |
| 12 | Test the windshield washer pump ground circuit 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 20 | Go to Step 17 |
| 13 | Inspect for poor connections at 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 20 | Go to Step 14 |
| 14 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement
in Steering Wheel and Column. Is the repair complete? |
- | Go to Step 20 | - |
| 15 | Inspect for poor connections at the windshield 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 20 | Go to Step 16 |
| 16 | Replace the windshield wiper motor cover. Refer to Wiper Motor Cover Replacement . Is the repair complete? |
- | Go to Step 20 | - |
| 17 | Replace the windshield washer relay. Is the repair complete? |
- | Go to Step 20 | - |
| 18 | Inspect for poor connections at the windshield washer pump. 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 20 | Go to Step 19 |
| 19 | Replace the windshield washer pump. Refer to Washer Pump Replacement - Windshield . Is the repair complete? |
- | Go to Step 20 | - |
| 20 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |