B3525

DTC B3525

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 B3525 02
- Window Lockout Switch Circuit Short to Ground




Circuit Description

The window lockout switch is contained within the driver door switch assembly (DDSA). The DDSA contains a microprocessor which takes the signal generated by the window lockout switch and assigns a digital message to the switch signal. The DDSA sends this message via the GMLAN serial data circuit to the passenger front door module (PDM), right rear door module (RRDM), and left rear door module (LRDM). When the window lockout function is activated, the passenger door modules will not allow their associated window to operate from the associated passenger door window switch.


Conditions for Running the DTC

The DDM and the DDSA must be powered.


Conditions for Setting the DTC

The DDSA detects that the window lockout switch is closed for more than 30 continuous seconds.


Action Taken When the DTC Sets

The DDSA deactivates and ignores inputs from the failed switch contacts and stops sending messages for this switch to the DDM. The DDSA will continue to respond to inputs from other non-failed switch contacts.


Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.
* You issue a scan tool CLEAR DTCs command.
* A history DTC will clear once 40 consecutive malfunction-free ignition cycles have occurred.



Reference Information
Schematic Reference

Moveable Window Schematics ([1][2]Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Power Windows Description and Operation (Power Windows 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)


Circuit/System Testing

Ignition ON, install a scan tool, clear all DTCs and operate the window lockout switch within the Conditions for Running the DTC.

If DTC B3525 resets as current, replace the DDSA.



Repair Instructions

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


Front Side Door Window Switch Replacement (Front Side Door Window Switch Replacement)