CIS-E Control

The vehicle speed sensor which is located in the instrument cluster transmits a vehicle speed signal to the CIS-E control unit and the idle speed control unit. The idle speed control unit switches engine idle speed control over to air flow control above a vehicle speed of approx. 0.9 mph. This process improves vehicle driveability at slow stop-and-go speeds (prevents possible bucking). The engine idle speed control is activated once again at vehicle speeds below 0.9 mph.