For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Wiper Switch Ignition Supply | 1 | 1 | -- | -- |
Wiper Motor Low Speed | 1 | 3 | 2 | -- |
Wiper Motor Ground | -- | 1 | -- | -- |
1. Wipers Inoperative All Modes 2. Wipers Always On 3. All Low Speed Modes Inoperative | ||||
Circuit/System Description
Low speed wiper motor operation is controlled by suppling ignition voltage through the wiper switch to the wiper motor low speed circuit.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Wiper/Washer System Description and Operation
Electrical Information Reference
Circuit/System Verification
Ignition ON, verify the high speed windshield wipers operate.
| ⇒ | If the windshield wiper low and high speed functions are inoperative, refer to Wipers Inoperative - All Modes. |
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the windshield wiper motor.
- Ignition ON wiper switch in the low position, verify that a test lamp illuminates between the wiper motor low speed circuit terminal 5 and ground.
- If all circuits test normal replace the windshield wiper motor.
| ⇒ | If the test lamp does not illuminate, test the wiper motor low speed circuit terminal 5 for an open/high resistance. If the circuit tests normal replace the wiper switch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
