For 1990-2009 cars

## Wipers Blades Do Not Park Notchback

### 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
--- | --- | --- | --- | ---
Park Switch Supply | 1 | 2 | -- | --
Park Control | 1 | 2 | 3 | --
Intermittent/Park Control | 1 | 5 | 3 | --
Wiper Motor Low Speed | 1 | 4 | 3 | --
1. Wipers Inoperative All Modes 2. Wipers Do Not Park 3. Wipers Always On 4. All Low Speed Modes Inoperative 5. Intermittent, Park, and Washer Wipers Inoperative

### Circuit/System Description

Intermittent, park, and washer wipers are all low speed wiper motor functions controlled through the wiper relay integrated in the IP fuse block. During intermittent and wash operation the switch signals are inputs to the multifunction module integrated in the IP fuse block. The multifunction module controls the wiper relay through a low side drive control circuit and whenever the relay is energized ignition voltage will be supplied from the relay through the windshield wiper switch to the wiper motor low speed circuit. The wiper motor park switch is integrated in the wiper motor and is closed whenever the motor is out of the park position. Ignition voltage is supplied to the park switch and while the switch is closed the voltage will be supplied to the wiper relay through the park control circuit. Whenever the wiper relay is in the de-energized state, ignition voltage from the park control circuit will be supplied from the relay through the windshield wiper switch to the wiper motor low speed circuit until the park switch opens.

### Reference Information

#### Schematic Reference

Wiper/Washer Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Wiper/Washer System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Verification

1. Ignition ON, verify the low speed windshield wipers operate.

⇒ | If the windshield wiper low speed function is inoperative, refer to Wipers Do Not Work on Low Speed.

2. Verify the intermittent windshield wipers operate.

⇒ | If the windshield wiper intermittent function is inoperative, refer to Wipers Do Not Work on Intermittent.

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the windshield wiper motor.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 3 and ground.

⇒ | If the test lamp does not illuminate, test the ignition circuit for an open high resistance.

3. Ignition OFF, test for less than 5 Ω between the park control circuit terminal 2 and the wiper motor low speed circuit terminal 5.

⇒ | If greater than the specified range, test the park control circuit terminal 2 for an open/high resistance. If the circuit tests normal replace the IP fuse block.

4. If all circuits test normal replace the windshield wiper motor.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Windshield Wiper Motor Replacement

• | Windshield Wiper and Washer Switch Replacement

## Wipers Blades Do Not Park Hatchback

### 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
--- | --- | --- | --- | ---
Park Switch Supply | 1 | 2 | -- | --
Park Control | 1 | 2 | 3 | --
Intermittent/Park Control | 1 | 5 | 3 | --
Wiper Motor Low Speed | 1 | 4 | 3 | --
1. Wipers Inoperative All Modes 2. Wipers Do Not Park 3. Wipers Always On 4. All Low Speed Modes Inoperative 5. Intermittent, Park, and Washer Wipers Inoperative

### Circuit/System Description

Intermittent, park, and washer wipers are all low speed wiper motor functions controlled through the wiper relay. During intermittent and wash operation the switch signals are inputs to the wiper relay. Whenever the relay is energized ignition voltage will be supplied from the relay through the windshield wiper switch to the wiper motor low speed circuit. The wiper motor park switch is integrated in the wiper motor and is closed whenever the motor is out of the park position. Ignition voltage is supplied to the park switch and while the switch is closed the voltage will be supplied to the wiper relay through the park control circuit. Whenever the wiper relay is in the de-energized state, ignition voltage from the park control circuit will be supplied from the relay through the windshield wiper switch to the wiper motor low speed circuit until the park switch opens.

### Reference Information

#### Schematic Reference

Wiper/Washer Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Wiper/Washer System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Verification

1. Ignition ON, verify the low speed windshield wipers operate.

⇒ | If the windshield wiper low speed function is inoperative, refer to Wipers Do Not Work on Low Speed.

2. Verify the intermittent windshield wipers operate.

⇒ | If the windshield wiper intermittent function is inoperative, refer to Wipers Do Not Work on Intermittent.

### Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the windshield wiper motor.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 3 and ground.

⇒ | If the test lamp does not illuminate, test the ignition circuit for an open high resistance.

3. Ignition OFF, test for less than 5 Ω between the park control circuit terminal 2 and the wiper motor low speed circuit terminal 5.

⇒ | If greater than the specified range, test the park control circuit terminal 2 for an open/high resistance. If the circuit tests normal replace the wiper relay.

4. If all circuits test normal replace the windshield wiper motor.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Windshield Wiper Motor Replacement

• | Windshield Wiper and Washer Switch Replacement