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Home >> Lincoln >> 1997 >> Mark VIII Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Brake On/Off (BOO) Switch

Brake On/Off (BOO) Switch

BOO switch is wired to brakelight circuit. It signals the PCM when the brake is applied. The BOO input is used to adjust engine idle when A/C is in use and to control torque converter clutch lock/unlock strategy.