Chassis Acceleration Sensor

On Sephia and Spectra, Chassis Acceleration Sensor (CAS) is located in right side of engine compartment, behind strut tower. On Sportage, CAS is located in right rear engine compartment, below starter. Turn ignition on. On Sephia, backprobe and measure voltage between CAS connector terminal No. 3 (Red/Black wire) and ground. On Sportage, backprobe and measure voltage between CAS connector terminal No. 3 (Blue/Green wire) and ground. Check for voltage spike (less than one volt) while tapping CAS bracket. If no voltage spike is observed, replace sensor.