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

Adaptive Forward Lighting Malfunction

Make
Vauxhall
Model
Astra J
Section
Lighting › Other Information › Adaptive Forward Lighting Malfunction
Body SystemsAdaptive Forward Lighting Malfunction

Adaptive Forward Lighting Malfunction

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.

Diagnostic Fault Information



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

Ignition Left Headlamp
2
2
-
B1461 00

Ignition Right Headlamp
3
3
-
B1462 00

Headlamp Leveling Sensor 5V Reference - Front
B3415 02
1
B3415 01
-

Headlamp Leveling Sensor 5V Reference - Rear
B3415 02
1
B3415 01
-

Headlamp Leveling Sensor Signal - Front
B3410 02
B3410 05
B3410 05
B3410 08

Headlamp Leveling Sensor Signal - Rear
B3420 02
B3420 05
B3420 05
B3420 08

Left Headlamp Control
B2575 00
B2575 04
6
-

Right Headlamp Control
B2699 00
B2575 04
7
-

Ignition 1 Headlight Control Module
4
4
-
-

Ignition 2 Headlight Control Module
5
5
-
-

Headlamp Leveling Sensor Low Reference - Front
-
1
-
-

Headlamp Leveling Sensor Low Reference - Rear
-
1
-
-

Left Headlamp Ground
-
2
-
B1461 00

Right Headlamp Ground
-
3
-
B1462 00

Left Cornering Lamp Ground
-
4
-
-

Right Cornering Lamp Ground
-
5
-
-

1. All Headlamp Leveling Actuator Malfunction

2. Left Headlamp Leveling Actuator Malfunction

3. Right Headlamp Leveling Actuator Malfunction

4. Left Cornering Lamp Malfunction

5. Right Cornering Lamp Malfunction

6. Left Cornering Lamp Always ON

7. Right Cornering Lamp Always ON
 

Circuit/System Description

Battery positive voltage is applied to the headlamp control module at all times. The headlamp control module has a normal operational voltage range of about 12.5-16 V and is only fully functional with the ignition switch is in the RUN position and the headlamp switch in the AUTOMATIC LIGHT position. The communications enable signal from the body control module (BCM) wakes the headlamp control module microprocessor. The headlamp control module receives serial data messages from the engine control module, transmission control module, electronic brake control module, and BCM with information regarding power mode, speed, steering angle, transmission gear selection, and headlamp switch status. The headlamp control module calculates the headlamp angle and sends commands to the left and right adaptive forward lighting system headlamp actuators. The headlamp actuators drive the headlamps to the position commanded by the headlamp control module. The headlamp control module monitors the headlamp actuator motor control circuits for proper circuit continuity and for shorts to ground or voltage. If a malfunction is detected, a DTC will be stored in memory and the driver will be notified with a message displayed over the driver information center located on the instrument cluster.

Reference Information


Schematic Reference

Headlights/Daytime Running Lights (DRL) Schematics


Connector End View Reference

Component Connector End Views


Description and Operation

Exterior Lighting Systems Description and Operation


Electrical Information Reference


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate headlamp assembly.
2. Disconnect the negative terminal of the C1 Battery.
3. Test for less than 5 Ω between the ground circuit terminal 1, 8 and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
4. Reconnect the negative terminal to the C1 Battery.
5. Ignition ON, headlamps ON, connect a test lamp between the ignition circuit terminal 6 and ground. The test lamp should illuminate.
⇒ If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
6. Ignition OFF, disconnect the X2 harness connector at the K28 Headlamp Leveling Control Module.
7. Ignition ON, connect a test lamp between the ignition circuit terminal 1 X2 at the K28 Headlamp Leveling Control Module and ground. The test lamp should illuminate.
⇒ If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
8. Connect a test lamp between the ignition circuit terminal 2 X2 at the K28 Headlamp Leveling Control Module and ground. The test lamp should illuminate.
⇒ If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
9. Ignition OFF, reconnect the harness connector at the K28 Headlamp Leveling Control Module.
10. Ignition ON, connect a test lamp between the control circuit terminal 9 at the appropriate headlamp assembly and ground. Command the appropriate Cornering Lamp test ON and OFF with the scan tool, verify that the test lamp turns ON and OFF.
⇒ If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K28 Headlamp Leveling Control Module.
⇒ If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 Headlamp Leveling Control Module.
11. If all circuits test normal, replace the appropriate headlamp assembly. Verify that the customer concern is not still present.
⇒ If the customer concern is still present, replace the K28 Headlamp Leveling Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

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

Parts & tools for this job For Vauxhall Astra

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.