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

DTC B2652

Make
Vauxhall
Model
Astra J
Section
Diagnostic Information and Procedures › Miscellaneous › DTC B2652
Body SystemsDTC B2652

DTC B2652

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 B2652 02: Passenger Compartment Dimming 3 Circuit Short to Ground

Diagnostic Fault Information



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

Interior Accent Light Control
B2652 02
2
1
-

1. Interior Accent Light at Full Intensity and Does Not Dim

2. Interior Accent Light do Not Illuminate
 

Circuit/System Description

The body control module (BCM) uses the ambient light sensor and the instrument panel dimming switch to determine the brightness of the accent lighting. The BCM applies a pulse width modulated (PWM) voltage through the accent light LED control circuit, daylight conditions 70%, night conditions 40% and as welcome light 100% illumination. The following LEDs will be illuminated, if equipped:

•  Door accent lamps
•  Center console accent lamps

Conditions for Running the DTC

•  The ignition is ON.
•  The headlamps or park lamps ON.

Conditions for Setting the DTC

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

Action Taken When the DTC Sets

The BCM does not attempt to illuminate the accent lighting.

Conditions for Clearing the DTC

•  The condition responsible for setting the DTC no longer exists.
•  A history DTC will clear once 100 consecutive malfunction ignition cycles have occurred.

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

When opening the passenger door the ambient illumination should go ON. When closing the driver door and locking the vehicle the courtesy lighting should go OFF after 20 s and the accent light illumination should remain ON at the commanded illumination dimming level with ignition ON.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at the appropriate inoperative accent light.
2. Test for less than 5 Ω between the following ground circuit terminals and ground:
  •  E1D Accent Lamp - Driver Door terminal 2
  •  E1P Accent Lamp - Passenger Door terminal 2
  •  E1V Accent Lamp - Shift Lever terminal 2
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
3. Exterior lights OFF.
4. Ignition OFF.
5. Close all doors and lock the vehicle, test for less than 0.3 V between control circuit terminal listed below of the appropriate inoperative accent light and ground after 20 s:
  •  E1D Accent Lamp - Driver Door terminal 1
  •  E1P Accent Lamp - Passenger Door terminal 1
  •  E1V Accent Lamp - Shift Lever terminal 1
⇒ If greater than the specified value, test the circuit for a short to voltage. If the circuits test normal replace the K9 Body Control Module.
6. Unlock the vehicle.
7. Open the driver door.
8. Test for greater than 11 V between control circuit terminal listed below of the appropriate inoperative accent light and ground:
  •  E1D Accent Lamp - Driver Door terminal 1
  •  E1P Accent Lamp - Passenger Door terminal 1
  •  E1V Accent Lamp - Shift Lever terminal 1
⇒ If less than the specified value, test the circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 Body Control Module.
9. If all circuits test normal, test or replace the appropriate inoperative accent light.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for BCM replacement, setup, and programming

Parts & tools for this job For Vauxhall Astra

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