B3642

DTC B3637-B3642

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.



DTC Descriptor
DTC B3637 A5
- Rear Washer Switch Stuck

DTC B3638 A5:
- Front Washer Switch Stuck

DTC B3639 A5:
- Wiper Switch Up F 1 Stuck

DTC B3640 A5:
- Wiper Switch Up F 2 Stuck

DTC B3641 A5:
- Wiper Switch Down F 1 Stuck

DTC B3642 A5:
- Wiper Switch Down F 2 Stuck




Circuit/System Description

The Steering Wheel Module (SWM) contain switches that control the Front and rear wiper and washer functions. These switches are integrated within the SWM and are not serviceable as a separate component. The SWM monitors these switch inputs for internal faults and set DTC B3637 A5 through DTC B3642 A5 if any are detected.


Conditions for Running the DTC

The system voltage is 9-18 volts.


Conditions for Setting the DTC

The SWM detects multiple or simultaneous switch inputs from a wiper or washer switch for more than one minute that would indicate a stuck switch.


Action Taken When the DTC Sets

The SWM ignores inputs from the malfunctioning switch.


Conditions for Clearing the DTC

* The DTC will be current for as long as the fault is present.
* When the fault is no longer present, the DTC will be a history DTC.
* A history DTC will clear after 40 ignition cycles.



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 (Wiper/Washer System Description and Operation)


or


Rear Wiper/Washer System Description and Operation (Rear Wiper/Washer System 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 Verification

Clear all DTCs and operate the integrated switches at SWM within the Conditions for Running the DTC. The DTC should not set.

If the DTC sets, replace the SWM.



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Control Module References (Programming and Relearning)


For Steering Wheel Module replacement, setup, and programming.