B3387

DTC B3377, B3382, B3387, B3392, B3467, or B3472

Diagnostic Instructions

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

DTC Descriptors
DTC B3377
- Left Front Window Up Switch Circuit Low

DTC B3382
- Left Front Window Down Switch Circuit Low

DTC B3387
- Right Front Window Up Switch Circuit Low

DTC B3392
- Right Front Window Down Switch Circuit Low

DTC B3467
- Left Front Window Express Up or Down Circuit Low

DTC B3472
- Right Front Window Express Up or Down Circuit Low

Circuit/System Description

The window switches are contained within the driver window switch. The driver window switch 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 driver window switch with a specific window switch signal. The driver window switch processes this signal, assigns a digital message to it, and sends the message to the driver door module (DDM) or passenger door module (PDM) via the serial data circuit. The door module, upon receiving the message, examines other relevant information available on the serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window.

Conditions for Running the DTC

Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

The driver window switch detects a continuous UP, DOWN, EXPRESS UP or EXPRESS DOWN command for greater than 30 seconds.

Action Taken When the DTC Sets

The DDM will ignore the affected input from the driver window 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 50 ignition cycles.

Reference Information
Schematic Reference

Moveable Window Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Power Windows Description and Operation (Power Windows)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

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

Circuit/System Verification

Ignition ON, operate the power window within the conditions for setting the DTC, verify the DTC does not reset.

If the DTC resets, replace the driver window switch.

Repair Instructions

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

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