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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information and Procedures >> DTC B0987 >> Circuit/System Description
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Circuit/System Description

Component Description
S70A Steering Wheel Controls Switch - Left Lower The assembly contains individual switches. Each function has its own switch. The switches are connected to a resistor ladder so that a specific resistance is generated for each switch.
B174W Frontview Camera - Windshield The video camera and the control module are a single serviceable component.
This camera delivers live video of what is in front of the vehicle. The video can be used for several functions, like lane departure warning, lane keep assist, road sign recognition and more.
The control module also reads various switches and sensors and makes their values available via serial data.
K124 Active Safety Control Module Depending on the version, the control module can support different functions:
  • Brake Assist
  • Automatic Collision Preparation
  • Rear Emergency Braking
  • Distance Sensing Cruise Control Function

The control module also reads various switches and sensors and makes their values available via serial data.
K9 Body Control Module Depending on the version, the control module can support different functions:
  • Exterior Illumination
  • Interior Illumination
  • Steering Wheel Controls
  • Power Mode Control

The control module also reads various switches and sensors and makes their values available via serial data.