Workshop Manuals Factory service & repair Alfa Romeo
01 General information02 Specifications03 Manufacturing data and tolerances04 Tightening torques05 Fluids and lubricants06 Maintenance07 Diagnostic checks08 Engine09 Clutch10 Gearbox and differential11 Transmission (4x4)12 Axles and driveshafts13 Brakes14 Steering15 Suspension and wheels16 Heating, air conditioning and auxiliary units17 Electrical equipment18 Body fittings19 Body panels and frame20 Wiring diagrams and electrical functions21 Wiring harnesses22 Connectors and pin-outs23 Fault diagnosis24 Special tools
Alfa Romeo 159 Factory Service Manual (2005-2011)20 · Wiring diagrams and electrical functions
20 · Electrical

Lighting controls - description

Make
Alfa Romeo
Model
159 Factory Service Manual
Year
2005–2011
Section
Interior lighting › Lighting controls - description
Wiring diagrams and electrical functionsLighting controls - description

LIGHTING CONTROLS - DESCRIPTION

Low setup

DESCRIPTION

The car is equipped with numerous light sources for optimal lighting of interior instruments and controls.

Some of these are lit with the ignition ON (INT), others with the side lights on, others are dimmable in accordance with a rheostat-controlled adjustment strategy managed by the Body Computer.

The Body Computer manages the lighting - with the side lights on - of:

- cigar lighter and rear current socket;

- controls on the front courtesy light

- radio display (aftermarket version only)

See E3510 RADIO

- radio phone preparation

See E3580 PREPARATION FOR CELLULAR TELEPHONE

The Body Computer manages (directly and via the door control units) the dimmed lighting of:

- instrument panel and display;

- auxiliary instrument

- switches in the doors;

- climate control system controls.

All the other controls are lit up when the ignition is on (INT), i.e. with the TEG inserted.

A brightness sensor for the automatic adjustment (day/night) of the brightness of the instrument panel is built-in; it has the task of measuring the ambient light conditions and sending this information (daytime or nightime) to the Body Computer which, on comparing this information with the state of the side lights, selects the appropriate lighting configuration for the vehicle interior (daytime or nightime mode).

With this information available, the behaviour of the instrument is as follows:

- In "daytime" mode the display can be adjusted to 8 settings, the graphics are switched off, the index lighting is 100% and cannot be adjusted.

- In "nightime" mode the display, the graphics and the indexes can be adjusted to 8 settings and the level set will be transmitted to the components that regulate the brightness (climate control display, radio display).

This adjustment is made using the "MODE", "MODE +" and "MODE -" buttons located on the steering column switch unit; there are 8 different possible settings. (fom 30% to 100% of the maximum intensity). The level set by pressing the buttons is shown on the instrument panel display; the setting is also memorized and used later on.

High setup

DESCRIPTION

The car is equipped with numerous light sources for optimal lighting of interior instruments and controls.

Some of these are lit with the ignition ON (INT), others with the side lights on, others are dimmable in accordance with a rheostat-controlled adjustment strategy managed by the Body Computer.

The Body Computer manages the lighting - with the side lights on - of:

- cigar lighter and rear current socket;

- controls on the front courtesy light

The Body Computer manages (directly and via the door and boot node control units) the dimmed lighting of:

- instrument panel and display;

- auxiliary instrument

- switches in the doors;

- climate control system controls;

- built-in radio-telephone-navigator unit;

All the other controls are lit up when the ignition is on (INT), i.e. with the TEG inserted.

A brightness sensor for the automatic adjustment (day/night) of the brightness of the instrument panel is built-in; it has the task of measuring the ambient light conditions and sending this information (daytime or nightime) to the Body Computer which, on comparing this information with the state of the side lights, selects the appropriate lighting configuration for the vehicle interior (daytime or nightime mode).

With this information available, the behaviour of the instrument is as follows:

- In "daytime" mode the display can be adjusted to 8 settings, the graphics are switched off, the index lighting is 100% and cannot be adjusted.

- In "nightime" mode the display, the graphics and the indexes can be adjusted to 8 settings and the level set will be transmitted to the components that regulate the brightness (climate control display, radio display).

This adjustment is made using the "MODE", "MODE +" and "MODE -" buttons located on the steering column switch unit; there are 8 different possible settings. (fom 30% to 100% of the maximum intensity). The level set by pressing the buttons is shown on the instrument panel display; the setting is also memorized and used later on.

Parts & tools for this job Staging For 2005 Alfa Romeo 159

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