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Circuit/System Description

The cruise control switch is an input to the engine control module (ECM) / powertrain control module (PCM). The ECM (3.6L) / PCM (3.8L) monitors the cruise control set/coast and resume/accelerate switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The ECM/PCM detects a specific voltage signal on the cruise control set/coast and resume/accelerate switch signal circuit when a switch is applied. The BCM monitors the cruise control cancel switch in order to detect when the drive has requested to perform a cruise control cancellation. The BCM sends a GMLAN serial data message to the ECM/PCM indicating the status of the cruise cancel switch.

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