9-3 (9440) L4-2.0L Turbo (2.0 T) (2006)
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Connection
The light switch is directly grounded to the body. The two pins of the lighting knob, the pin for front fog lights and the pin for rear fog light, are fed 10.2.
V separately via a 1.2 kOhm resistor integrated in BCM (headlamp position has 1.5 kOhm). Voltage between each pin and ground is 0 V when the
circuit is closed to ground and approx. 6 V when it is open (headlamp position 5.5 V). If the control module detects 10.2 V, it will be regarded as a
break. The LEDs are grounded internally and are supplied with PWM from BCM. Headlamp levelling requires one pin for +15 and one for the output to
the two headlamp levelling motors.
