Will set when the headlamp leveling module detects an open or short to voltage in the right headlamp leveling actuator motor 2 control circuit after 4 consecutive monitoring cycles.
Action Taken When the DTC Sets
When DTC B2682 sets, the headlamp leveling module will disable all requests to both headlamp leveling actuators.
Conditions for Clearing the DTC
- The condition responsible for setting the DTC no longer exists.
- You issue a scan tool CLEAR DTCs command.
- 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 in Wiring Systems.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Headlight Leveling Schematics Connector End View Reference: Lighting Systems Connector End Views | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Is DTC B2682 02 present? | Go to Step 3 | Go to Step 6 |
| 3 | Test the right headlamp leveling motor 2 circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 4 |
| 4 | Turn OFF the ignition. Disconnect the right headlamp leveling actuator harness connector. Connect a 3-amp fused jumper between the right headlamp leveling motor 2 circuit and the right headlamp leveling motor low reference circuit at the right headlamp leveling actuator harness connector. Turn ON the ignition, with the engine OFF. Turn ON the headlamps. With a scan tool, request the headlamp leveling module DTC display. Does the scan tool indicate DTC B2682 02 is current? | Go to Step 5 | Go to Step 9 |
| 5 | Test the right headlamp leveling motor low reference circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 10 |
| 6 | Test the right headlamp leveling motor 2 circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 7 |
| 7 | Turn OFF the ignition. Disconnect the right headlamp leveling actuator harness connector. Connect a 3-amp fused jumper between the right headlamp leveling motor 2 circuit and the right headlamp leveling motor low reference circuit at the right headlamp leveling actuator harness connector. Turn ON the ignition, with the engine OFF. Turn ON the headlamps. With a scan tool, request the headlamp leveling module DTC display. Does the scan tool indicate DTC B2682 05 is current? | Go to Step 8 | Go to Step 9 |
| 8 | Test the right headlamp leveling motor low reference circuit for an open or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 10 |
| 9 | Inspect for poor connections at the harness connector of the headlamp leveling control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 12 |
| 10 | Inspect for poor connections at the harness connector of the right headlamp leveling actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 11 |
| 11 | Replace the right headlamp leveling actuator. Refer to Headlamp, Fog Lamp, Turn Signal Lamp, Side Marker Lamp Replacement - Front . Did you complete the replacement? | Go to Step 13 | |
| 12 | Replace the headlamp leveling control module. Refer to Control Module References in Computer/Integrating Systems 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 test. Does the DTC reset? | Go to Step 2 | System OK |
DTC B2682
Circuit Description
The front suspension position sensor provides the headlamp level controller with front suspension position information. The sensor is permanently grounded and has voltage supplied with the ignition in the ON or CRANK position. The sensor arm is connected to the control arm of the front suspension. As the vehicle travels, the suspension compresses and rebounds moving the suspension position sensor arm. This causes the signal output of the sensor to change. The headlamp level controller compares this information with the rear suspension position sensor information and adjusts the headlamp leveling as needed. For more detailed information concerning headlamp leveling operation, refer to Exterior Lighting Systems Description and Operation .
DTC Descriptor
This diagnostic procedure supports the following DTC
DTC B3410 AHLD Front Axle Sensor Signal Circuit
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description in Vehicle DTC Information.
| DTC Symptom | DTC Symptom Descriptor |
|---|---|
| 02 | Short to Ground |
| 03 | Voltage Below Threshold |
| 07 | Voltage Above Threshold |
DTC B3410
Conditions for Running the DTC
The headlamp level controller performs this diagnostic test mode every 3.2 milliseconds when the following conditions are met
- The ignition is in the ON or CRANK position.
- The headlamps are ON.
Conditions for Setting the DTC
DTC B3410 will set when one of the following conditions occur