Service Information

Captiva

DTC B2667

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 B2667 02: Control Output Short to Ground

DTC B2667 05: Control Output Short to Battery or Open

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Control	B2667 02	B2667 05	B2667 05	-

The headlamp levelling module receives inputs from the front and rear suspension position sensors to determine vehicle pitch. The suspension position sensors send an output to the headlamp levelling module as the vehicle suspension compresses and rebounds. The headlamp levelling module calculates the difference in vehicle pitch and sends a command to the headlamp levelling actuators. The headlamp levelling actuators drive the headlamps to the position commanded by the headlamp levelling module. The headlamp levelling module monitors the headlamp levelling 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.

Conditions for Running the DTC

The headlamp levelling module performs this diagnostic test mode every 0.8 millisecond when the following conditions are met:

•	The ignition is in the ON or CRANK position.

•	The headlamps are ON.

Conditions for Setting the DTC

B2667 02

Will set when the headlamp levelling module detects a short to ground in circuit to control unit terminal 7.

B2667 05

Will set when the headlamp levelling module detects an open or short to voltage in circuit to control unit terminal 7.

Action Taken When the DTC Sets

The headlamp levelling module will disable all requests to both headlamp levelling actuators.

Conditions for Clearing the DTC

•	The condition responsible for setting the DTC no longer exists.

•	A scan tool CLEAR DTCs command is issued.

•	A history DTC will clear once 40 consecutive malfunction-free ignition cycles have occurred.

Diagnostic Aids

Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to Testing for Intermittent Conditions and Poor Connections .

Reference Information

Schematic Reference

Headlamps/Daytime Running Lamps (DRL) Schematics

Connector End View Reference

Component Connector End Views

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

Step	Action	Yes	No
*Schematic Reference:Headlamps/Daytime Running Lamps (DRL) Schematics Connector End View Reference:* Component Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Is DTC B2667 02 present?	Go to Step 3	Go to Step 6
3	Test the left headlamp levelling motor 1 circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 4
4	Turn OFF the ignition. Disconnect the left headlamp levelling actuator wiring harness plug. Connect a 3-amp fused jumper between the left headlamp levelling motor 1 circuit and the left headlamp levelling motor low reference circuit at the left headlamp levelling actuator wiring harness plug. Turn ON the ignition, with the engine OFF. Turn ON the headlamps. With a scan tool, request the headlamp levelling module DTC display. Does the scan tool indicate DTC B2667 02 is current?	Go to Step 5	Go to Step 9
5	Test the left headlamp levelling motor low reference circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 10
6	Test the left headlamp levelling motor 1 circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 7
7	Turn OFF the ignition. Disconnect the left headlamp levelling actuator wiring harness plug. Connect a 3-amp fused jumper between the left headlamp levelling motor 1 circuit and the left headlamp levelling motor low reference circuit at the left headlamp levelling actuator wiring harness plug. Turn ON the ignition, with the engine OFF. Turn ON the headlamps. With a scan tool, request the headlamp levelling module DTC display. Does the scan tool indicate DTC B2667 05 is current?	Go to Step 8	Go to Step 9
8	Test the left headlamp levelling motor low reference circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 10
9	Inspect for poor connections at the wiring harness plug of the headlamp levelling control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 12
10	Inspect for poor connections at the wiring harness plug of the left headlamp levelling actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 13	Go to Step 11
11	Replace the left headlamp levelling actuator. Did you complete the replacement?	Go to Step 13	-
12	Replace the headlamp levelling control module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	Go to Step 13	-
13	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK