Vehicle Speed Sensor (Breeze, Cirrus, Neon & Stratus M/T Models)

NOTE: Models equipped with 4-speed A/T, Output Speed Sensor (OSS) supplies vehicle speed and distance inputs to PCM through TCM. See OUTPUT SPEED SENSOR .

Models equipped with M/T, Neon and some A/T equipped models, VSS generates a predetermined number of pulses per sensor revolution (4 pulses per revolution on some models, or 8 pulses per revolution on other models). VSS input is used by PCM to determine vehicle speed and distance traveled.

Speed and distance inputs along with TP sensor closed throttle input, determine if a closed throttle deceleration or normal throttle idle (vehicle stopped) condition exists. During deceleration, PCM controls IAC motor to maintain a desired MAP value. During idle (vehicle stopped), PCM controls IAC motor to maintain a desired idle speed.