B0987

DTC B0987

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 B0987 01
- Vehicle Direction Camera Indicator Circuit Short to Battery

DTC B0987 06
- Vehicle Direction Camera Indicator Circuit Low Voltage/Open

Diagnostic Fault Information






Circuit/System Description

The lane departure warning is enabled and disabled through a switch located in the left steering wheel controls switch. When enabled, the front view camera module will illuminate the indicator located in the switch.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

The front view camera module has detected a short to battery or open/high resistance in the control circuit.

Action Taken When the DTC Sets

* Lane departure warning is disabled.

* SERVICE LANE DEPARTURE SYSTEM is displayed on the driver information center.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

Reference Information

Schematic Reference

Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems

Connector End View Reference

Component Connector End Views Sunshade - Left Front

Description and Operation

Object Detection Description and Operation (UD7) Object Detection (UD7)Object Detection Description and Operation (Front View Camera with UEU) Object Detection Description and Operation (Front View Camera with UEU)Object Detection Description and Operation (Front View Camera with UFL) Object Detection Description and Operation (Front View Camera with UFL)Object Detection Description and Operation (UVC) Object Detection (UVC)

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 Programming and Relearning for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify that DTC B356A is not set.

• If the DTC is set
Refer to DTC B356A B356A.

• If the DTC is not set

3. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K109 Front View Camera Module and at the S70L Steering Wheel Controls Switch - Left. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for infinite resistance between the S70L Steering Wheel Controls Switch - Left control circuit terminal 5 and ground.

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

3. Ignition ON.

4. Test for less than 1 V between the S70L Steering Wheel Controls Switch - Left control circuit terminal 5 and ground.

• If greater than 1 V
Repair the short to voltage on the circuit.

• If less than 1 V

5. Ignition OFF.

6. Test for less than 2 ohms in the S70L Steering Wheel Controls Switch - Left control circuit terminal 5 end to end.

• If 2 ohms or greater
Repair the open/high resistance in the circuit.

• If less than 2 ohms

7. Test for infinite resistance between the S70L Steering Wheel Controls Switch - Left control circuit terminal 4 and ground.

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

8. Ignition ON.

9. Test for less than 1 V between the S70L Steering Wheel Controls Switch - Left control circuit terminal 4 and ground.

• If greater than 1 V
Repair the short to voltage on the circuit.

• If less than 1 V

10. Ignition OFF.

11. Test for less than 2 ohms in the S70L Steering Wheel Controls Switch - Left control circuit terminal 4 end to end.

• If 2 ohms or greater
Repair the open/high resistance in the circuit.

• If less than 2 ohms

12. Replace the S70L Steering Wheel Controls Switch - Left, ignition ON.

13. Verify the DTC does not set while operating the vehicle under Conditions for Running the DTC.

• If the DTC sets
Replace the K109 Front View Camera Module.

• If the DTC does not set

14. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Programming and Relearning for front view camera module replacement, programming and setup.