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Home >> Saab >> 2011 >> 9-5 Turbo6 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting And Signaling Systems >> Fault diagnosis, fault codes >> DTC B2652: Passenger Compartment Dimming 3 Circuit Short to Ground >> Circuit/System Description

Circuit/System Description

The body control module (BCM) uses the ambient light sensor to determine the required brightness of the accent lighting. The BCM applies a pulse width modulated (PWM) voltage through the accent light LED control circuit which gives during daylight 70%, at night 40% and for welcome lighting 100% illumination. The following LEDs will be illuminated, if equipped: