B3495
DTC B3375, B3380, B3385, B3390, B3395, B3450, B3455, B3460, B3485, B3490, B3495, or B3500
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 Descriptors
DTC B3375 02
- Left Front Window Up Switch Circuit Short to Ground
DTC B3380 02
- Left Front Window Down Switch Circuit Short to Ground
DTC B3385 02
- Right Front Window Up Switch Circuit Short to Ground
DTC B3390 02
- Right Front Window Down Switch Circuit Short to Ground
DTC B3395 02
- Left Rear Window Up Switch Circuit Short to Ground
DTC B3450 02
- Left Rear Window Down Switch Circuit Short to Ground
DTC B3455 02
- Right Rear Window Up Switch Circuit Short to Ground
DTC B3460 02
- Right Rear Window Down Switch Circuit Short to Ground
DTC B3485 02
- Left Front Window Express Switch Circuit Short to Ground
DTC B3490 02
- Right Front Window Express Switch Circuit Short to Ground
DTC B3495 02
- Left Rear Window Express Switch Circuit Short to Ground
DTC B3500 02
- Right Rear Window Express Switch Circuit Short to Ground
Circuit Description
The window switches are contained within the driver door switch assembly (DDSA). The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate driver door module (DDM), passenger front door module (PDM), left rear door module (LRDM), or right rear door module (RRDM), via the GMLAN serial data circuit. The door module, upon receiving the message, examines other relevant information available on the GMLAN serial data circuit in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module commands the associated window motor and circuits in order to move the window.
Conditions for Running the DTC
* The DDM and the DDSA must be powered.
* DTC B1325 Battery Voltage Out of Range, must not be current.
Conditions for Setting the DTC
The DDSA detects that one of the window switches is closed for more than 15 continuous seconds.
Action Taken When the DTC Sets
The action taken depends on which switch contacts are closed:
* If a DDSA WINDOW UP switch is closed for more than 15 seconds, both UP and DOWN signals from that switch will be ignored until the WINDOW UP input is no longer detected, or the ignition is cycled from OFF to RUN.
* If a DDSA WINDOW DOWN switch is closed for more than 15 seconds, both UP and DOWN signals from that switch will be ignored until the WINDOW DOWN input is no longer detected, or the ignition is cycled from OFF to RUN.
* If a DDSA WINDOW EXPRESS switch is closed for more than 15 seconds, express functions for that switch are disabled until the DDM no longer detects the input.
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 windows within the Conditions for Running the DTC.
If DTC B3375, B3380, B3385, B3390, B3395, B3450, B3455, B3460, B3485, B3490, B3495, or B3500 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)