Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 1980 >> Skyhawk Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Controlled Catalytic Converter System C-4 >> Operation >> Engine Sensors & Switches >> Closed Throttle Switch (CTS)

Closed Throttle Switch (CTS)

This switch detects closed or part throttle conditions and sends appropriate signal to ECM. This switch is used in conjunction with WOT in most cases. This switch is normally closed until 12 in. Hg or more manifold vacuum is present.

NOTE: In some cases the BARO and MAP sensors are used to perform the functions of the CTS and WOT switches.
scientia non olet · About Mike's Workshop Manuals