Subaru 2002 Impreza Service Manual page 228

E: THROTTLE POSITION SENSOR
The throttle position sensor provides electrical signals corresponding to throttle valve positions.
The throttle valve angular position and accelerator depressing speed are detected by this throttle
position sensor.
F: REAR VEHICLE SPEED SENSOR
This vehicle speed sensor (output shaft speed sensor) is externally mounted on the extension
case. It detects the rear wheel speed in terms of the peripheral speed of the transfer clutch drum
and sends sine wave signals (30 pulses per rotation) to the TCM.
1. NON-TURBO MODEL
r .
.
(1 ) Rear vehicle speed sensor
NF0068
2. TURBO MODEL
This vehicle speed sensor (output shaft speed sensor) is externally mounted on the extension
case. It detects the rear wheel speed in terms of the peripheral speed of the rear drive shaft and
sends sine wave signals (22 pulses per rotation) to the TCM.
d
(1)
Rear vehicle speed sensor
H3H1818C
AT-6