GM Service Manual Online
For 1990-2009 cars only

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.

DTC Descriptor

DTC B3205: Left Front/Driver Window Motor Circuit

Circuit/System Description

The driver door module (DDM) and passenger door module (PDM) check for hall sensor pulses and relay feedback of their respective window motors at least once every 50 milliseconds. When the DDM or PDM detects no hall sensor pulses or relay feedback in the window motor, a DTC is set.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

    • The DDM or PDM detects no hall sensor pulses from the power window motor.
    • The DDM or PDM detects no relay feedback from the power window motor.

Action Taken When the DTC Sets

Loss of window normalization.

Conditions for Clearing the DTC

    • The condition responsible for setting the DTC no longer exists.
    • You issue a scan tool CLEAR DTCs command.

Diagnostic Aids

The following conditions may cause an intermittent malfunction:

    • There is an intermittent sticking or binding window causing the window to be unable to move.
    • A window motor is shorted internally.

Reference Information

Schematic Reference

Moveable Window Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Power Windows Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

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 B3205 resets as current, replace the appropriate door control module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for DDM or PDM replacement, setup, and programming