9-3 FWD (9440) L4-2.0L Turbo (B207R) (2009)
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Transmission Speed Sensor: Description and Operation
Input Shaft Speed Sensor, Gearbox, AF 40 (532)
Input Shaft Speed Sensor, Gearbox, AF 40 (532)
Location
The sensor is mounted inside the valve housing in the front part of the gearbox.
Main use
To measure the speed of the gearbox input shaft. This value is used by TCM to calculate the actual gearchange time and to regulate lock up.
Type
Magnetoresistive, Hall effect. Measures a toothed wheel with 36 teeth.
1. Output shaft gear with output speed sensor
2. C2 clutch drum with input speed sensor
Activation
The sensor is powered from TCM pin 12 and is grounded through pin 13.