Front fog lights, detailed description: Notes

The two fog lights are located in the spoiler. They are activated with a switch (88) when the light switch (10) is in position 1 or 2 (market-dependent). This function is programmable.

Fig 1: Identifying Front Fog Lights Detailed Description (1 Of 2)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The fog light switch is connected to BCM (707). BCM detects the switch position and sends the bus message "Front fog lights, button active ON", which is used by the Underhood Electrical Center (UEC) to control the fog lights. The lamps are supplied PWM-regulated voltage.

Fig 2: Identifying Front Fog Lights Detailed Description (2 Of 2)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

When the fog light switch (88) is depressed, BCM pin A28 is grounded. BCM sends the bus message "Front fog lights, button active ON". UEC reads the bus message and activates the outputs, pins 33 and 10, to the fog lights (85FR/FL) if the market-dependent conditions are met. UEC sends the bus message "Front fog lights, indicator active ON", which is used by MIU (540) to light the indicator lamp when the fog lights are activated.

Variant 1, EU

Parking lights or dipped beam on
Ignition position ON

Variant 2, US

Dipped beam on
Ignition position ON

Variant 3, SE

Parking lights or main beam on
Ignition ON