Vehicle Speed Sensor Description

The VSS is an electronic relay that is mounted on the transaxle. As the transaxle turns the VSS, the VSS provides the speedometer with a vehicle speed input (voltage pulses). This input is used to drive the speedometer. The speedometer then converts the Vehicle speed input into a more precise waveform and provides the Powertrain Control Module (PCM) and the cruise control module with its own vehicle speed input. The cruise control module converts this input into a vehicle speed. For vehicle speed sensor replacement procedures, refer to VEHICLE SPEED SENSOR (VSS) REPLACEMENT in Automatic Transmission - MU4, VEHICLE SPEED SENSOR (VSS) REPLACEMENT in Automatic Transmission - MU5, VEHICLE SPEED SENSOR (VSS) REPLACEMENT in Manual Transmission - MK5, or VEHICLE SPEED SENSOR (VSS) REPLACEMENT in Manual Transmission - MTN.

The RES/ACC switch can also be used to tap-up vehicle speed. In order to do this, the cruise control system must be engaged and operating. Tapping-up is performed by quickly moving the cruise control switch up into the RES/ACC position and releasing it (or tapping the switch into the RES/ACC position). Do not hold the cruise control switch in the RES/ACC position, or the cruise control system will enter the accelerate mode. Tap-up is a function in which cruise speed can be increased by 1.6 km/h (1 mph) increments (one tap = 1.6 km/h [1 mph] increase).