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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> DTC B3623, B3794, P0564, P0565, P0567, P0568, P056C, P0580, P0581, P0589, P0592, P0593 or P155A-P155C: Steering Wheel Controls Distance Sensing Cruise Control Gap Up/Down Signal >> Circuit/System Description >> Cruise Control Switch Primary Circuit 1

Cruise Control Switch Primary Circuit 1

The cruise control switch 1 signal is an input to the body control module (BCM). The BCM monitors the cruise control on/off, speed limiter on/off, set/coast, resume/accelerate and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The engine control module (ECM) receives the requested cruise control switch function from the BCM via a serial data message.

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