Heated Washer Nozzle Malfunction

Heated Washer Nozzle Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

Diagnostic Fault Information





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

Wiper/Washer Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Wiper/Washer System Description and Operation (STS) (Description and Operation)Wiper/Washer System Description and Operation (STS-V) (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate heated washer nozzle.
2. Test for less than 10 ohms between the ground circuit terminal B and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, rear defogger ON, verify a test lamp illuminates between the control circuit terminal A and ground.

• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.

4. If all circuits test normal, test or replace the heated washer nozzle.

Repair Instructions

Washer Nozzle Replacement (Service and Repair)