PRE-RELEASE
Parking lights, detailed description
| Parking lights, detailed description |
The parking lights can be lit together with main/dipped beam or by themselves. The parking lights are lit when the light switch is in position 1 if the ignition is on. The parking lights are on in other light switch positions depending on the programming alternative selected.
The vehicle parking lights consist of the following lamps:
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In the front, lighting consists of light-emitting diodes positioned in a row in the top edge of the headlamp. The lamps are supplied power from the underhood electrical centre (UEC) (342).
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Two lamps (13) in each rear light cluster (418RL/RH). Power is supplied to the lamps from the Rear Electrical Centre, REC (701).
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Two lamps (15) for number plate lighting. Power is supplied to the lamps from the Rear Electrical Centre, REC (701).
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BCM (707) uses pins A29 and A30 to determine which position is set. BCM (707) pin A29 is connected to light switch pin 4, which corresponds to position 0. BCM (707) pin A30 is connected to light switch pin 2, which corresponds to position 2. BCM (707) sends a bus message with information on light switch position. UEC and REC use this bus message to determine if parking lights should be lit based on the programming alternative selected. For more information on bus messages, see Parking lights, bus information.
The parking lights can be lit together with the headlamps or by themselves, regardless of the position of the ignition switch.
| Front parking lights |
UEC (342) uses the bus message regarding light switch position to activate the outputs. UEC supplies B+ voltage from pin 8 (F) and pin 1 (F) to pin 4 of the headlamps (663FL/FR).
US: UEC supplies B+ voltage from pins 5 (F) and 6 (F) to pin 1 of the side marker lights (234FL/FR).
| Rear parking lights |
REC (701) uses the bus message regarding light switch position to activate the outputs.
REC supplies B+ voltage from pin 2 (R-D) and pin 4 (T-D) to pin 2 of the light clusters (418RL/RR). The parking lights (13RL/RR) are located in the light clusters. Power is supplied to the lamp for number plate lighting (15) from REC pin 10 (T-B).
REC supplies PWM voltage with pulse width 27% to the parking lights (13RL/RR) to reduce the power of the 21 W bulbs so that they produce light strength corresponding to a 5 W bulb. The service life of the bulbs is extended due to the lower operating voltage in combination with the more robust filament in the 21 W bulb as compared to that of a 5 W bulb.
Filament monitor
In the event of filament breakage in a circuit, REC detects that current in the circuit is low. REC sends the bus message "Left tail light not working ON" or "Right tail light not working ON" depending on which circuit is faulty. SID uses this bus message to show a warning message in the display.
The rear parking lights come on if the following faults occur:
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REC has no bus communication and the ignition is on.
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Fault in microprocessor
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