DESCRIPTION
The front and side direction indicators are traditional with an incandescent bulb.
The rear side lights are located in the rear side light clusters and have LED circuits controlled by dedicated internal electronics.
The left and right direction indicators are switched on by raising or lowering the special stalk lever on the left of the steering wheel interface; the function is activated with the key in the ON position.
The hazard warning lights (left and right direction indicators operated simultaneously) are activated via a button in the centre of the dashboard and all the direction indicators are activated at the same time.
This function is always active for safety reasons.
The engagement of the direction indicators / hazard warning lights is managed by the Body Computer which also controls the flashing frequency which is sent to the other nodes via the CAN serial network. In this way the two direction indicator warning lights in the instrument panel are also switched on; in addition, the system provides a low frequency acoustic signal in conjunction with the activation of the lights.
The direction indicators check function checks that the lights are working properly: the following are checked for each of the two circuits (right side branch and vehicle left side):
- open circuit or missing bulb
- short circuit to earth (bulb s.c. or wiring s.c. to earth)
- short circuit to battery voltage (wiring short circuited to Vbatt)
When one of the situations described above is verified, the Body Computer makes the failure status available to the CAN: in the instrument panel: a special failure warning light comes on and, at the same time, the information is shown in the display only at the key on.
In addition, at the same time as a failure warning light comes on, the flashing frequency of the visual indication in the display and the acoustic signal increases; the flashing frequency of the exterior lights, on the other hand, remains unchanged.
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the direction indicators are also used to signal that the commands sent by the remote control have been received and/or to signal a manoeuvre not carried out by the passenger compartment access control system. |