Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .
Washers Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views DEFINITION: The windshield washer pump is always on. | |||
| 1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems |
| 2 | Turn the windshield wiper/washer switch to the OFF position. Turn the ignition ON, with the engine OFF. Is the windshield washer pump always ON? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 | Are the windshield wipers always ON, also? | Go to Step 4 | Go to Step 6 |
| 4 | Turn the ignition OFF. Disconnect the windshield wiper motor module connector. Turn the ignition ON, with the engine OFF. Connect a test lamp from the windshield wiper switch signal circuit terminal to ground. Does the test lamp illuminate? | Go to Step 5 | Go to Step 12 |
| 5 | Test the windshield wiper switch signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 10 |
| 6 | Turn the ignition OFF. Disconnect the windshield washer relay. Turn the ignition ON, with the engine OFF. Is the windshield washer pump ON? | Go to Step 8 | Go to Step 7 |
| 7 | Connect a test lamp from battery positive voltage to the windshield washer relay control circuit terminal in the underhood fuse block. Does the test lamp illuminate? | Go to Step 9 | Go to Step 14 |
| 8 | Repair the windshield washer pump control circuit for a short to voltage. Refer to Wiring Repairs . Is the repair complete? | Go to Step 16 | |
| 9 | Test the windshield washer relay control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 12 |
| 10 | Inspect for poor connections at the windshield 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 16 | Go to Step 11 |
| 11 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement . Did you complete the replacement? | Go to Step 16 | |
| 12 | Inspect for poor connections at the windshield wiper motor module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 13 |
| 13 | Replace the windshield wiper motor module. Refer to Wiper Motor Replacement . Did you complete the replacement? | Go to Step 16 | |
| 14 | Inspect for poor connections at the windshield washer relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 15 |
| 15 | Replace the windshield washer relay. Did you complete the replacement? | Go to Step 16 | |
| 16 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Washers Always On
Washers Inoperative
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views DEFINITION: The windshield washer pump is inoperative. | ||||
| 1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems | |
| 2 | Turn the ignition ON, with the engine OFF. Press the windshield washer switch. Do the windshield washers operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | 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 | Turn the ignition OFF. Disconnect the windshield wiper motor connector. Turn the ignition ON, with the engine OFF. Test the resistance from the windshield wiper switch supply voltage circuit terminal to the windshield wiper switch signal circuit terminal in the windshield wiper motor harness connector. Press the windshield washer switch. Is the resistance near the specified value? | 0.5 ohms | Go to Step 15 | Go to Step 5 |
| 5 | Test the following circuits for open or high resistance. Windshield wiper switch supply voltage circuit Windshield wiper switch signal circuit Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 20 | Go to Step 13 | |
| 6 | Turn the ignition OFF. Disconnect the windshield washer relay. Turn the ignition ON, with the engine OFF. Connect a test lamp test from each of the windshield washer relay battery positive voltage supply circuit terminals in the underhood fuse block to ground. Does the test lamp illuminate on both terminals? | Go to Step 7 | Go to Step 9 | |
| 7 | Connect a test lamp from battery positive voltage to the windshield washer relay control circuit terminal in the underhood fuse block. Press the windshield washer switch. Does the test lamp illuminate? | Go to Step 8 | Go to Step 10 | |
| 8 | Turn the ignition OFF. Connect the windshield washer relay. Disconnect the windshield washer pump connector. Turn the ignition ON, with the engine OFF. Connect a test lamp across the windshield washer pump harness connector terminals. Press the windshield washer switch. Does the test lamp illuminate? | Go to Step 18 | Go to Step 11 | |
| 9 | Replace the underhood fuse block. Refer to Underhood Electrical Center or Junction Block Replacement . Did you complete the replacement? | 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 . 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 . 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 . 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 . 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 . Did you complete the replacement? | Go to Step 20 | ||
| 15 | Inspect for poor connections at the windshield wiper motor module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 20 | Go to Step 16 | |
| 16 | Replace the windshield wiper motor module. Refer to Wiper Motor Replacement . Did you complete the replacement? | Go to Step 20 | ||
| 17 | Replace the windshield washer relay. Did you complete the replacement? | 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 . 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 . Did you complete the replacement? | 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 | |
Washers Inoperative
Wipers Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views Lighting Systems Connector End Views DEFINITION: Windshield wipers are always ON at low or high speed. | |||
| 1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems |
| 2 | Turn the windshield wiper/washer switch OFF. Turn the ignition ON, with the engine OFF. Are the windshield wipers always on? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 | Turn the ignition OFF. Disconnect the turn signal multifunction switch connector C3. Turn the ignition ON, with the engine OFF. Are the windshield wipers always on? | Go to Step 4 | Go to Step 7 |
| 4 | Are the windshield wipers always ON at high speed? | Go to Step 5 | Go to Step 6 |
| 5 | Test the windshield wiper switch high signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9 |
| 6 | Test the windshield wiper switch signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9 |
| 7 | Inspect for poor connections at the windshield 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 11 | Go to Step 8 |
| 8 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement . Did you complete the replacement? | Go to Step 11 | |
| 9 | Inspect for poor connections at the windshield wiper motor module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 10 |
| 10 | Replace the windshield wiper motor module. Refer to Wiper Motor Replacement . Did you complete the replacement? | Go to Step 11 | |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Wipers Always On
Wipers Inoperative - All Modes
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views DEFINITION: Wipers are inoperative in all modes. | |||
| 1 | Did you perform the Wiper/Washer System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems |
| 2 | Turn the ignition ON, with the engine OFF. Attempt to operate the windshield wipers in all modes. Does the system operate normally? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 | Do the windshield wipers operate in any mode? | Go to Wipers Inoperative - One or More Modes | Go to Step 4 |
| 4 | Disconnect the multifunction turn signal harness connector C3. Connect a fused jumper wire from the windshield wiper switch high signal circuit terminal in the multifunction turn signal harness connector to a good ground. Turn the ignition ON. Do the windshield wipers operate at high speed? | Go to Step 9 | Go to Step 5 |
| 5 | Disconnect the windshield wiper motor module connector. Connect a test lamp from the accessory voltage supply circuit terminal in the windshield wiper motor harness connector to a good ground. Turn the ignition ON. Does the test lamp illuminate? | Go to Step 6 | Go to Step 7 |
| 6 | Connect a test lamp from battery positive voltage to the windshield wiper motor ground circuit terminal in the windshield wiper motor harness connector. Does the test lamp illuminate? | Go to Step 11 | Go to Step 8 |
| 7 | Repair the accessory voltage supply circuit to the windshield wiper motor for an open or short to ground. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | Go to Step 13 | |
| 8 | Repair the windshield wiper motor ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | Go to Step 13 | |
| 9 | Inspect for poor connections at the windshield 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 13 | Go to Step 10 |
| 10 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement . Did you complete the replacement? | Go to Step 13 | |
| 11 | Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 12 |
| 12 | Replace the windshield wiper motor. Refer to Wiper Motor Replacement . Did you complete the replacement? | Go to Step 13 | |
| 13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 4 |
Wipers Inoperative - All Modes
Wiper Chatter Repair
Some vehicles may exhibit a condition where the windshield wiper blades chatter or wipe unevenly. Several different conditions can cause the wiper blade chatter. To completely repair wiper blade chatter, all of the following should be checked and repaired as necessary
- The windshield glass must be clean.
- The wiper blade element must be clean.
- The wiper arm tip pressure must be within specifications.
- The wiper blade element set must be within specifications.
Windshield Glass Cleaning
Clean the windshield glass with windshield cleaner. The cleaner used should be one that will not harm the paint finish or scratch the glass. The windshield glass is clean when water no longer beads, but sheets across the entire glass surface.
Blade Element Cleaning
- Lift the wiper blade assemblies off of the windshield glass.
- Clean the wiper blade element with a clean cloth saturated with full strength washer solution.
- Rinse the wiper blade assemblies with water.
- Place the wiper blade assemblies back onto the windshield glass.
Windshield Wiper/Washer System Components
The windshield wiper/washer system consists of the following components
- Windshield wiper/washer switch
- Windshield wiper motor module
- Windshield washer pump
- Windshield washer relay
- W/S WIPER 25A fuse
- W/S WASH 15A fuse