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Home >> Scion >> 2009 >> tC Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM System Circuits >> Cruise Control >> System Outline >> Coast Control

Coast Control

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When the - SET SW is held down on during cruise control driving, the engine control module adjusts the throttle valve to gradually decelerate the vehicle. Every time the - SET SW is tapped momentarily, the vehicle speed is decelerated by approximately 1.6 km/h. However, in the case of a tap-down operation which puts a difference of more than 5 km/h between the set speed and the actual vehicle speed, the device records the speed when the switch was released and maintains it at that speed constantly.