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Home >> Jeep >> 1999 >> Cherokee Classic, 2.5 P >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Vehicle Theft Security System (VTSS)

Vehicle Theft Security System (VTSS)

VTSS is used on Grand Cherokee only. VTSS module provides a signal to PCM, through ignition switch circuit, to enable it to start engine. With VTSS module activated, no signal will be sensed by PCM and it will not permit vehicle to start until VTSS is deactivated.