Combination Meter: Speedometer
WARNING: This page is about a different car, the 2002 Subaru Outback and 2002 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Description - The speedometer system uses electric signals from either the vehicle speed sensor in M/T models or from the transmission control module (TCM) in A/Tmodels. Since the speedometer system does not use mechanical components, such as a rotating cable, no opportunities exist for such problems as meter needle vibration, cable disconnection, and mechanical noise transmission. The odometer and trip meter readings appear on a liquid crystal display (LCD) within the speedometer gauge. See Fig 1 .
NOTE:
Signals from the vehicle speed sensor or TCM are also used by the engine control module, automatic transmission control module, etc.
Operation
- M/T Model - A vehicle speed sensor (VSS) is installed on M/T models. The VSS sends vehicle speed signals to the speedometer drive circuit and to the odometer/trip meter drive circuit, located in the speedometer. For more information on the VSS, see VEHICLE SPEED SENSOR
- A/T Model - The TCM sends vehicle speed signals (four pulses per rotation of output shaft) to the speedometer drive circuit and to the odometer/trip meter drive circuit in the speedometer.