B1010
DTC B1010
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC B1010 52
- System Sensors Data Mismatch
Diagnostic Fault Information
Circuit/System Description
The front and rear suspension position sensors provide the headlamp leveling control module with front and rear suspension position information. Each sensor receives a 5 V reference, signal, and low reference circuits from the headlamp leveling control module. The sensor are connected to the control arms at the front and rear suspension. As the vehicle travels, the suspension compresses and rebounds moving the suspension position sensor arms. This causes the signal output of the sensors to change. The headlamp leveling control module compares the information from the front and rear suspension position sensors and adjusts the headlamp leveling as needed.
Conditions for Running the DTC
* Battery voltage must be between 9-16 V.
* Ignition ON.
* Headlamps ON.
Conditions for Setting the DTC
The headlamp leveling control module detects a pitch angle that is physically unachievable by the vehicle for 3 consecutive monitoring cycles.
Actions Taken When the DTC Sets
When DTC B1010 52 sets as current, the following actions are taken:
* If the headlamp leveling actuators have positioned the headlamps above the nominal level, the headlamp leveling control module will drive the headlamps to the nominal setting.
* If the headlamp leveling actuators have positioned the headlamps below the nominal level, the headlamp leveling control module will disable the headlamp leveling actuators and maintain the lower than nominal level.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.
Diagnostic Aids
Note: The headlamp leveling control module is not capable of detecting an actual mechanical failure of the suspension position sensors. When the headlamp leveling control module determines that the vehicle pitch angle is physically impossible, the headlamp leveling control module will assume that a mechanical failure has occurred to one of the suspension position sensors.
Reference Information
Schematic Reference
Headlights/Daytime Running Lights (DRL) Schematics Headlights/Daytime Running Lights (DRL) Schematics
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
Exterior Lighting Systems Description and Operation Exterior Lighting Systems
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the arm from the ball and socket at the B152LF suspension position sensor - left front, ignition ON, headlamps ON.
2. Verify the scan tool Front Leveling Position Sensor Signal parameter changes while moving the suspension position sensor - left front arm up and down.
• If the reading does not change
1. Ignition OFF.
2. Replace the B152LF suspension position sensor - left front.
• If the reading changes
3. Ignition OFF, connect the B152LF suspension position sensor - left front arm to the ball and socket.
4. Disconnect the arm from the ball and socket at the B152LR suspension position sensor - left rear, ignition ON, headlamps ON.
5. Verify the scan tool Rear Leveling Position Sensor Signal parameter changes while moving the suspension position sensor - left rear arm up and down.
• If the reading does not change
1. Ignition OFF.
2. Replace the B152LR suspension position sensor - left rear.
• If the reading changes
6. Test or replace the K28 headlamp leveling control module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Headlamp Leveling Front Suspension Height Sensor Replacement (Coupe) Headlamp Leveling Front Suspension Height Sensor Replacement (Coupe)
* Headlamp Leveling Rear Suspension Height Sensor Replacement (Coupe) Headlamp Leveling Rear Suspension Height Sensor Replacement (Coupe)
* Control Module References Control Module References for headlamp leveling control module replacement, programming, and setup