Swift GA L4-1298cc 1.3L SOHC MFI (2001)
Transmission Position Switch/Sensor: Description and Operation
Transmission Range Sensor (switch) (A/T vehicle only)
This switch is installed on the automatic transmission.
ECM (PCM) detects transmission range by monitoring the ON/OFF signal from this switch and uses it as one of the signals to control the fuel injector,
IAC valve and automatic transmission.