Subaru 2002 Impreza Service Manual page 76

SENSORS AND SWITCHES
I
Fuel
Injection (Fuel System)
2. AT VEHICLES
0
The vehicle speed sensor is mounted on the transmission.
0
The vehicle speed sensor generates a 16-pulse signal for every rotation of the front differential
and send it to the transmission control module (TCM). The signal sent to the TCM is converted
there into a 4-pulse signal, and then sent to the ECM and the combination meter.
62H24596
(1)
Combination meter
(2) ECM
(3) TCM
(4) Vehicle speed sensor
(5) Transmission
FU-26