9-3 Coupe (9400) L4-2.0L Turbo (B204) (1999)
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Power Trunk / Liftgate Lock Actuator Position Sensor: Description and Operation
The microswitch for disarming the tailgate with a key is fitted to the lock cylinder on the tailgate. The microswitch is connected to pin 59 on the control
module.
Function
A pulse width-modulated (approx. 3.5%) voltage is supplied continuously from the control module via a 1 kohm pull-up in TWICE to the microswitch.
From this voltage, the control module can detect whether the tailgate is opened when the alarm is armed by testing the voltage at the input concerned.
