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SPEED CONTROL DESCRIPTION The speed control system is electronically controlled and vacuum operated. Electronic control of the speed control The system is designed to operate at speeds above 30 mph (50 km/h). WARNING: The use of speed control is not recommended when driving conditions do not permit maintain- OPERATION When speed control is selected by depressing the ON switch, the PCM allows a set speed to be stored in PCM The speed control can be disengaged manually by: • Stepping on the brake pedal • Depressing the OFF switch • Depressing the CANCEL switch. • Depressing the clutch pedal (if equipped). NOTE: Depressing the OFF switch or turning off the ignition switch will erase the set speed stored in the For added safety, the speed control system is programmed to disengage for any of the following conditions: • An indication of Park or Neutral • A rapid increase rpm (indicates that the clutch has been disengaged) • Excessive engine rpm (indicates that the transmission may be in a low gear) • The speed signal increases at a rate of 10 mph per second (indicates that the coefficient of friction between • The speed signal decreases at a rate of 10 mph per second (indicates that the vehicle may have decelerated Once the speed control has been disengaged, depressing the RES/ACCEL switch (when speed is greater than 30 While the speed control is engaged, the driver can increase the vehicle speed by depressing the RES/ACCEL 9 tap-up 9 feature in which vehicle speed increases at a rate of approximately 2 mph for each momentary switch activation of A “tap down” feature is used to decelerate without disengaging the speed control system. To decelerate from an OVERSHOOT/UNDERSHOOT If the vehicle operator repeatedly presses and releases the SET button with their foot off of the accelerator (referred The Speed Control System has an adaptive strategy that compensates for vehicle-to-vehicle variations in speed To “unlearn” the overshoot/undershoot condition, the vehicle operator has to press and release the set button while 8P - 2 SPEED CONTROL KJ |