Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J15 · Safety and Security
15 · General

DTC B291A

Make
Vauxhall
Model
Astra J
Section
Theft Deterrent › Other Information › DTC B291A
Safety and SecurityDTC B291A

DTC B291A

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 Descriptors

DTC B291A 39: Content Theft Deterrent Assembly Internal Malfunction

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the content theft deterrent sensor module (intrusion/inclination module).

Conditions for Running the DTC

•  The ignition is OFF.
•  The vehicle is in Park.

Conditions for Setting the DTC

The body control module detects an internal failure within the content theft deterrent sensor module.

Action Taken When the DTC Sets

The intrusion and inclination output is disabled

Conditions for Clearing the DTC

•  A current DTC is cleared when the conditions for setting the DTC are no longer present.
•  A history DTC will clear after 40 malfunction free ignition cycles.

Reference Information


Schematic Reference

Theft Deterrent System Schematics


Connector End View Reference

Component Connector End Views


Description and Operation

Content Theft Deterrent (CTD) Description and Operation


Electrical Information Reference


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

Verify that DTC B291A is not set.

If the DTC is set, replace the A621 content theft deterrent sensor module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•  Control Module References for body control module replacement, setup, and programming

Parts & tools for this job For Vauxhall Astra

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