9-3 FWD (9440) L4-2.0L Turbo (B207R) (2009)
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The button has a direct chassis grounding and is fed with 5V via a resistance of 5.6 kohms in the door control module. This means that the voltage
measured across the pins will be dependent of whether the button is in the locked or unlocked position.
The voltage value is A/D converted and is then available in digital form. The digital value is then converted to the identity for the button's position and is
paced in the control module's primary memory. The value is sent out on the bus and is used by BCM.
The LEDs are fed with PWM+ from the door control module and use the same ground as the breaker.
