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 |
|---|---|---|---|---|
B+ | 1 | 1 | -- | -- |
Left Heated Washer Nozzle Control Circuit | 1 | 1 | 2 | -- |
RIGHT Heated Washer Nozzle Control Circuit | 1 | 1 | 2 | -- |
Left Heated Washer Nozzle Ground Circuit | -- | 1 | -- | -- |
RIGHT Heated Washer Nozzle Ground Circuit | -- | 1 | -- | -- |
1. Heated Washer Nozzles Inoperative 2. Heated Washer Nozzles Always On | ||||
Circuit/System Description
The heated washer nozzles have an electrical heating element molded into the nozzle assembly. This prevents washer fluid icing on the nozzles during cold conditions.
Battery voltage is applied to the 10 A MISC IGN FUSE. The 10 A MISC IGN FUSE supplies voltage to the heated washer nozzles. Current passes through the washer nozzle heating element, warming the nozzle.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Wiper/Washer System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate heated washer nozzle.
- Test for less than 10 ohms between the ground circuit terminal B and ground.
- Ignition ON, rear defogger ON, verify a test lamp illuminates between the control circuit terminal A and ground.
- If all circuits test normal, test or replace the heated washer nozzle.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. |
Repair Instructions
