DTC B3926 or B3927. Holden WM Sedan 2007

For 1990-2009 cars only

Makes 🢒 Holden 🢒 2007 🢒 WM Sedan 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 DTC B3926 or B3927

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 B3926: Screen 1 Theft Locked

DTC B3927: Screen 2 Theft Locked

The DVD screen and rear seat entertainment 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 Setting the DTC

•	The RSE system transitions from OFF to ON. This may be in response to the RSE system power switch or an ignition key cycle.

•	This DTCs will set when there is a security code mismatch.

•	Battery voltage must be between 9-16 volts.

Action Taken When the DTC Sets

The system will enter the Theft Detected Mode.

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.

•	The DTC can be cleared using a scan tool.

Reference Information

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

Verify that DTC B3926 or B3927 is set to current.

⇒	If DTC B3926 or B3927 is set to current and "Security Error" is displayed on the screen attempt DVD screen to rear seat entertainment interface module auto-learn procedure.

RSE system OFF, ignition OFF, wait for 30 seconds.
Ignition ON, RSE system ON, select the DVD function for the system, verify that DVD screen functions correctly.