Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2007 >> Uplander Base, 3.9 1 >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> Cruise Control Inoperative/Malfunctioning >> Circuit/System Description

Circuit/System Description

The cruise control switch is an input to the engine control module (ECM), while the cruise cancel switch is an input to the body control module (BCM). The ECM monitors the cruise control on/off, set/coast, and the resume/accelerate switch signal circuits in order to detect when a cruise control function switch has been activated. The ECM detects a predetermined voltage signal when a cruise control function switch is applied, with each switch having a different voltage value.

The BCM monitors the cruise cancel switch in order to detect when the cancel switch has been activated. The BCM sends a class 2 message to the ECM regarding the status of the cruise cancel switch.

scientia non olet · About Mike's Workshop Manuals