9-5 Sedan (9600) L4-2.3L Turbo (B235) (2000)
/l4-2.3l_turbo_(b235)/Page-2715001.png)
Hood Sensor/Switch (For Alarm): Description and Operation
General
The bonnet switch is placed on the rear left of the engine bay and acts as a sensor for the bonnet. The switch is connected to pin 41 on the TWICE
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 switch. From
this voltage, the control module can detect whether the bonnet is opened when the alarm is armed by testing the voltage at the input concerned.
