Fail-Safe System Check: Description

Fail-safe system check monitors ASCD system for malfunctions. When a malfunction is sensed by ASCD control unit, cruise control operation is deactivated and CRUISE indicator light will flash on and off in 0.4 second intervals until fault is no longer present. The following conditions can cause a fail-safe system operation:

Stuck steering wheel switch(es).
Fault in power or ground circuit for vacuum motor.
Fault in ground or power circuit for air valve.
Fault in ground or power circuit for release valve.
Faulty Vehicle Speed Sensor (VSS) or VSS circuit.
Faulty ASCD control unit.
Faulty brake switch or brakelight switch.

NOTE: Listed malfunctions will cancel vehicle set speed stored, except for a faulty cancel switch, ASCD brake switch or brakelight switch. When ASCD switch is turned off, vehicle set speed stored is cancelled.