Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J05 · Body Systems
05 · Body & interior

DTC B255F

Make
Vauxhall
Model
Astra J
Section
Lighting › Other Information › DTC B255F
Body SystemsDTC B255F

DTC B255F

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 B255F 02: Interior Door Handle Backlight Circuit Short to Ground

Diagnostic Fault Information



Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance

Door Handle Backlight Control
B255F 02
2
1
-

Door Handle Backlight Ground
-
2
-
-

1. Door handle backlight does not dim

2. Door handle backlight does always OFF
 

Circuit/System Description

Voltage for the accent lamps is supplied from the body control module (BCM). When a door is opened, a signal is applied to the BCM. The BCM then applies voltage through the accent lamps circuit, illuminating the accent lamps listed below:

•  Accent lamp - driver door
•  Accent lamp - passenger door
•  Accent lamp - console shift lever

Conditions for Running the DTC

Driver or passenger door in open position.

Conditions for Setting the DTC

The BCM detects a short to ground on the accent lamps control circuit.

Action Taken When the DTC Sets

The BCM will not illuminate the Interior Door Handle Backlight.

Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists.

Reference Information


Schematic Reference

Interior Lights Dimming Schematics


Connector End View Reference

Component Connector End Views


Description and Operation

Interior Lighting Systems Description and Operation


Electrical Information Reference


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, command the Accent Lighting 1 test with a scan tool. The accent lamps should turn ON and OFF when changing between the commanded states.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the appropriate inoperative accent lamp.
2. Disconnect the negative terminal of the C1 Battery.
3. Test for less than 5 Ω between the appropriate accent lamp ground circuit harness connector terminal 2 and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
4. Reconnect the negative terminal of the C1 Battery.
5. Connect a test lamp between the appropriate accent lamp control circuit harness connector terminal 1 and ground.
6. Command with the scan tool the Accent Lighting 1 test ON and OFF. The accent lamps should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.
⇒ If the test lamp is always OFF, test the control circuit for open/high resistance or short to ground. If the circuit tests normal, replace the K9 Body Control Module.
7. If all circuit test normal, replace the appropriate inoperative accent lamp.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM for BCM replacement, setup, and programming

Parts & tools for this job For Vauxhall Astra

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