3026115 - Introduction - EXTERIOR LIGHTING

LOCATION OF COMPONENTS ON VEHICLE

The vehicle components and their location are illustrated below.
1 - Right front light cluster 2 - Left front light cluster 3 - Left front direction indicator 4 - Right front direction indicator 5 - Right rear light cluster 6 - Left rear light cluster 7 - Third brake light 8 - No. plate lights 9 - Headlamp alignment control panel

COMPOSITION

The vehicle's exterior lighting system has been designed with two aims in mind:

  • to ensure maximum efficiency in terms of complying with international regulations which define the illumination specifications of the various components
  • to blend in with the design of the vehicle so that the various components reflect the image.
In particular, the front light cluster includes the separate function of the side light, dipped headlamp, main beam headlamp and fog lights in a single unit.The clear element is made out of one piece of plastic.

TAIL-LIGHT CLUSTER

The vehicle's exterior lighting system has been designed with two aims in mind:

  • Ensuring maximum efficiency in terms of complying with international regulations which define the illumination specifications of the various components
  • To blend in with vehicle design so that the various components enhance the image.
  • The exterior aesthetic appearance is polychromatic in line with the vehicle. The functional selection is a light cluster assembled from a fixed section and a moving section.
The light cluster carries out the following lighting functions:

Signals on fixed section:

  • Red incoroporated side light and brake light.
  • Orange direction indicator and reflector grouped together.

Signals on moving section:

  • 1 red coloured (left) rear fog lamp
  • 1 white coloured (right) reversing light
A - Reversing light 12V - 12W (right side only) B - Direction indicator 12V - 21W C - Side light 12V - 5W and brake light 12V - 21W (bilux bulb) D - Connector D E - Connector E F - Rear fog lamp 12V - 21W (left side only) right light cluster CONNECTOR D PIN-OUT 1 - Rear fog lamp 2 - Earth CONNECTOR E PIN-OUT 1 - Earth 2 - Direction indicator 3 - Brake light 4 - Side lightMoving light cluster lens cover (F): white (right) reverse or red (left) fog lightFixed light cluster lens cover (B) (C): two tone orange/red

Fixed light cluster

This is made from Alfa red coloured heat resistant ABS. It contains two reflective, parabolic chambers with brake/side light functions (bilux bulb with two filaments 12V - 21 - 5W bayonet fitting) and a direction indicator (single filament bulb 12V - 21W). And a non parabolic chamber for housing the reflector. It also contains the housing for the sealed, watertight bulb holder; and the housing for the three fixing studs. The component is fastened to the side panel.

Moving light cluster

It is in Alfa red. It contains a parabolic reflective chamber for the right reversing light function (single filament bulb 12V - 21W) and the left rear fog lamp (single filament bulb 12V - 21W) (reversed for right hand drive versions). It also contains the housing for the bulb holder. The seal and the housing for the three studs. The component is fastened to the outside of the tailgate.

FRONT DIRECTION INDICATORS

Below is an illustration of the front direction indicators.
1 - Lit surface smoked lens cover 2 - Bumper grille 3 - Supply terminal 4 - Earth terminal 5 - Casing 6 - Left front direction indicator 12V - 21W 7 - Attachment spring 8 - Screen 9 - O-Ring 10 - Bulb holder 11 - Bulb holder capUse a screwdriver when replacing the front direction indicator bulb applying leverage at the point shown by the arrow to extract the complete lens cover outwards. This operation should be carried out very carefully in order not to damage the paintwork. Place a cloth between the screwdriver and the actual bodywork.

SIDE DIRECTION INDICATOR

The side direction indicator is illustrated below.
1 - Grey casing 2 - Orange lens cover 3 - Bulb 12V - 5W 4 - Bulb holder 5 - Contact terminal 6 - O-Ring 7 - Prism 8 - Fastening springTo replace the small bulb, push the lens cover, by hand, in the opposite direction to the direction of travel of the vehicle in order to compress the fastening spring (8). Release the front section and extract the unit. Rotate the bulb holder in an anti-clockwise direction and extract it from the lens cover.

NO. PLATE LIGHT

The no. plate light is illustrated below.
1 - Casing 2 - Lens cover 3 - Spring 4 - Bulb holder casing 5 - Contact 6 - Seal 7 - All glass bulb 12V - 5W 8 - Connector housingThe number plate light function is achieved by means of two single bulb lights fitted by a metal spring. Each light has an all glass 12V - 5W bulb which is replaced by removing the light from the trim and the bulb holder from the number plate light.The black coloured casing has housings for fastening to the trim. The polycarbonate lens cover is colourless and is ultrasonically welded to the actual casing.

ADDITIONAL BRAKE LIGHT

The additional brake light function is achieved through a multi-bulb lamp and light beam coming out of the rearscreen serigraphy, fitted on the upper part of the tailgate trim which has a luminous surface.
1 - All glass bulb 12V - 2.3 W 2 - Lens cover (red) 3 - Parabola body (black) 4 - Connector 5 - Bulb holder cover (black) 6 - Bulb attachment housing (2-way)The casing is made of black bayblend, it contains the bulb holder which is in one piece and is fastened to the actual casing. The internal current carrier tracks are made from brass with a copper covering and, with the circuit activated, supply 10 small all glass type 12V - 2.3W bulbs. The light cluster has two housings for fastening to the tailgate. The red coloured acrylate lens cover is fitted to the light cluster casing and its shape and outline give a masked effect with the light off if viewed from outside the vehicle.The bulbs can be changed, with the light cluster fitted, through the service cover by opening the tailgate.

Fitting brake lights (left/right)

The BRAKE switch has three functional stages:

  • (1a) first condition: with the pedal released the pins (1 and 3) are closed:
  • (2a) second condition: during the travel of the switch there is an intermediate position in which the pins (1 and 3) and (2 and 4) are simultaneously closed;
  • (3a) third condition: with the pedal depressed the pins (2 and 4) are closed.
Brake light switch PIN-OUT
1 - From fuse F35 dashboard control unit (int. key) 2 - From fuse F37 dashboard control unit (int. key) 3 - From PIN 20 n.c. ABS control unit (NFR) 4 - From PIN 15 dashboard control unit Body Computer - Selespeed control unit - PIN 69 n.a. - 3rd brake light)Switch: dual contact brake a- black b- white c-blackNormal brake switch a- black c- whiteClutch switch a- white c- blackBrake lights wiring diagram:
A - Braking system control unit (NFR) or ABS B - Selespeed control unit (NGR) C - 4-way brake switch with normally closed (n.c.) contacts for (VDC) function, normally open (n.a.) for brake-ABS-Selespeed function D - Body computer E - Right brake light F - Left brake light G - 7.5 A fuse F35 H - 10 A fuse F37 I - Supply lines from dashboard control unit L - 3rd brake lightThe brake lights function is activated with the ignition key in the ON position (INT) with voltage.Position of switch 1 - 3 normally closed (n.c.) with pedal releasedPosition of switch 2 - 4 normally open (n.a.) with pedal released

When the pedal is pressed:

  • The voltage signal at PIN 20 of the ABS control unit (NFR) is removed
  • The body computer receives a voltage signal and recognizes from this that the position of the brake pedal differs from the rest position (pedal released) and it supplies the brake lights

The body computer (NBC) is capable of recognizing the following irregularities:

  • Open circuit (bulb missing or wiring broken) which can be diagnosed if there is no command
  • Short circuit to earth (bulb short circuited or wiring short circuited to GND)
  • Short circuit to +VB (wiring short circuited to Vbatt)
The continuity of the fuse protecting the bulbs is also checked.Brake lights position checkThe diagram below illustrates the position of the brake lights.
A - Switch B - Bracket (seen from Y housing detail) C - Load application point D - Retaining tooth1 - Press the brake pedal and fit the brake lights switch (A) on the bracket (B).2 - Position the switch on the bracket rotating it about 90° in an anti-clockwise direction until you hear the retaining tooth D click which means it is attached to the fitting on the bracket B.3 - Release the brake pedal and pull it backwards with a load applied at point C of 4 +/- 20% daN so that the brake servo push rod is in the end of travel position (rest position) and the button is in the correct position in relation to the switch casing.
this operation must be conducted carefully because if the switch is not correctly retracted it could keep the brake pedal in an advanced position with the risk of residual torque at the wheels which could cause the brakes to lock.
4 - Move the brake pedal through its full travel to allow the switch A to bed in.5 - Connect the electrical connection.6 - Check that the brake lights switch is correctly adjusted in the following conditions: brake lights off with brake pedal released in rest position and pedal capable of completing its entire return travel allowed by the brake servo without being prevented by the switch.

CENTRE SWITCH CONTROL PANEL

The control panel is an electro-mechanical and electronic unit with LEDs which come on at night and LEDs which light up the ideograms and controls described below.
1 - Tailgate release button 2 - Fog lights control button 3 - Hazard warning lights control button (HAZARD) 4 - Rear fog light control button 5 - Central locking control button T2 - green LED signalling fog lights on T3 - red coloured LED with hazard warning lights ideogram (night) Ideogram with red flashing warning light which is brighter when the function is switched on T4 - two tone amber-yellow LED lit up when rear fog lamp is on T5 - two tone amber-yellow LED lit up when central locking function is on and red when alarm function is on T1-T2-T4-T5 - LEDs lighting up ideograms at night with red reduced brightness B - centering housings in climate control trim

CONNECTOR A PIN-OUT:

  • 1 - Positive signal for hazard warning lights LED (flashing) from (NBC)
  • 2 - Earth
  • 3 - Negative signal for hazard warning lights control button from (NBC)
  • 4 - INT (ignition key) fuse F49 (dashboard control unit) for control lights
  • 5 - Negative signal from fog lights control button
  • 6 - Negative signal from rear fog lamps control button
  • 7 - Negative signal from central locking opening/closing control button
  • 8 - N.c.
  • 9 - N.c.
  • 10 - Negative signal from boot opening control button
  • 11 - Positive signal for deterrent LED (alarm on)
  • 12 - Negative signal for central locking on LED
  • 13 - Positive signal for rear fog lamp warning light LED
  • 14 - Negative signal for fog lights warning light LED
  • 15 - N.c.
  • 16 - N.c.
  • 17 - N.c.
  • 18 - N.c.

Switching on direction indicators with warning lights

The direction indicators function is activated by the following enablements:

  • 1- The ignition key in the ON position (INT) with voltage
  • 2 - The body computer (NBC) receives commands in the form of earth signals to turn on the left direction indicator or the right direction indicator using the steering column switch unit
  • 4 - It is always the body computer which manages the frequency (about 90 cycles +/- 15 per minute) which is sent to all the bulbs on the branch activated.
  • 5 - When the function is activated the left and right direction indicator warning lights in the instrument panel are lit up: the instrument panel (NQS) switches on the appropriate warning lights in harmony with the messages coming from the body computer (NBC).

Switching on hazard warning lights and warning light

The body computer (NBC) receives an instruction to activate the hazard warning lights from the unstable type button in the centre panel. It is an earth signal. The flashing frequency of the lights; the flashing mode of the warning lights in the instrument panel (NQS) is identical to the description for the direction indicators function, but with the difference of all the direction indicators coming on at the same time.An LED at the back of the control switch (HAZARD) also comes
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