DeVille V8-4.6L VIN Y (1998)
Powertrain Control Module: Description and Operation
Stop/BTSI/Cruise Brake Switch
DESCRIPTION
The Stop/Brake-Transmission Shift Interlock (BTSI) /Cruise Brake Switch contains three sets of electrical contacts. Two sets of contacts are normally
closed and one set is normally open.
OPERATION
The one normally open set of contacts is referred to as the stop lamp switch contacts and supplies power to the stop lamps when the brakes are applied.
One set of normally closed contacts is referred to as the BTSI brake switch contacts and supplies power to the BTSI solenoid when the brakes are not
applied. The other normally closed set of contacts is referred to as the cruise brake switch contacts and is used to disengage cruise when the brakes are
applied.
