GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Caprice WM 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B3924

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 B3924: DVD Player Theft Locked

Circuit/System Description

This DTC will set when the rear seat entertainment (RSE) system is switched from the OFF to ON position. The DVD player and audio/video interface module communicate with each other to verify that a security code relayed between the two components is valid. The DTC will pass when the both components acknowledge a matching code.

Conditions for Running the DTC
    • The radio is ON.
    • Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC
    • The RSE system transitions from OFF to ON.
    • This DTCs will set when there is a security code mismatch.

Action Taken When the DTC Sets

The system will enter the Theft Detected Mode and "Security Error" is displayed on the screen.

Conditions for Clearing the DTC
    • The condition for setting the DTC is no longer present.
    • The history DTC will clear after 50 fault-free ignition cycles.

Reference Information

Schematic Reference

Video System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Video Entertainment System 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
  1. Verify that DTC B3924 is not set and/or "Security Error" is not displayed on the screen.
    2. ⇒If the DTC is set and/or "Security Error" is displayed on the screen attempt DVD player to rear seat entertainment interface module auto-learn procedure.
  2. Ignition ON, RSE system ON, select the DVD function for the system, verify that DVD player functions correctly.
    3. ⇒If the RSE system fails to function correctly, replace the DVD player.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Video Disc Player Replacement