2892455 - Introduction - INSTRUMENT PANEL
LCD
Liquid Crystal Display This consists of elements where, after the electric current passes through, the transparency is altered, composing figures or letters according to the basic electrical circuit.LED
The LED code (Light Emitting Diode) is used for particular diodes capable of emitting light at a certain wavelength when a low voltage electric current passes through.The gauges and warning lights which form the instrument panel are grouped in a single instrument containing:
- electronic speedometer
- total mileage counter/trip recorder
- digital clock
- fuel gauge, with reserve warning light
- warning lights
REAR VIEW
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Instrument pin-out
Connector APin, Signal1, direct supply2, supply controlled by the ignition3, power earth4, electronic earth5, left direction indicators warning light6, right direction indicators warning lightConnector BPin, Signal1, side lights warning light2, main beam headlamps warning light3, speedometer signal output (preparation)4, fuel gauge signal5, fuel gauge earth6, Air Bag failure warning light7, passenger Air Bag deactivation warning light8, handbrake warning light9, N.C.10, N.C11, N.C.12, N.C.Connector CPin, Signal1, generator warning light2, low oil pressure warning light3, engine overheating warning light4, heater plugs warning light5, brake pad wear warning light6, fuel injection failure warning light7, ABS failure warning light8, speedometer sensor supply9, speedometer signal input10, speedometer signal output11, speedometer signal output12, Code failure warning light13, low brake fluid level warning light14, EBD failure warning light15, diesel preheating enablement16, trailer direction indicators warning lightSpeedometer signal
The speedometer signal comes from the specific sensor located on the gearbox.The gauge display is produced by an electronic circuit inside the module. There are also some 'repeat' outputs of the signal for other systems which require this information.Milometer
The milometer consists of an LCD which alternately shows the total and trip mileage.The specific button switches between functions and resets the trip recorder:
- if the button is pressed briefly (less than about 2.5 s), it switches over between total/trip mileage
- if the button is pressed for longer (more than about 2.5 s) and the milometer is on trip recorder, the recorder is reset.
Zeroing the milometer
The total mileage counter can be reset only once - during the first 200 km - following handling during production or prior to delivery to the Customer.In the case of a new instrument, the mileage reading is preceded by an 'H' (e.g. 'H00199').After 200 km, the letter H disappears automatically and the reading becomes '000201'.If the reset button is pressed before 200 km, the letter H disappears and the counting restarts from '000000'.This operation can only be carried out once!Clock
The digital clock is electronic with quartz oscillator. It is adjusted by means of a button inside the dial.The time is adjusted using the 'h' and 'min' buttons.The clock is set to zero if the battery is disconnected for over 10 seconds.Lcd
The segments of the milometer and clock display can be tested as follows: turn the ignition on while holding down the reset button.Fuel gauge
The fuel level is displayed via electronic circuitry inside the module, which operates the gauge and the warning light (which comes on when the gauge is at about 1/8 of its travel). The internal logic 'dampens' the signal, preventing fluctuations (e.g. the warning light comes on if the signal persists for at least 100 s).During starting, when the ignition is turned on, the warning light comes on for about 4 seconds as a self-test, then goes out.If it stays on flashing, and at the same time the gauge goes to '0', this means that there is a fault in the connection (short circuit to earth or A.C.) or in the fuel gauge sender unit.Warning lights
'intelligent' warning lights
Some warning lights come on not only to indicate a fault in the system they are checking, but also if there is a failed connection or a short to earth from the circuit which connects the warning light and relevant control unit: these warning lights have a special internal control circuit which checks that they are connected correctly.These warning lights are:
- 'Air Bag failure'
- 'ABS failure'
'insufficient brake fluid level' and 'handbrake' warning light
The 'insufficient brake fluid level' and 'handbrake' warning light has a dual function:
- if it comes on, during driving, together with the 'ABS failure' warning light, it indicates a fault in the EBD braking system, managed by the ABS control unit (for further details refer to the description of the ABS)
- if, on the other hand, it comes on by itself, the brake fluid level is low or the handbrake is on.
Lighting
The instrument is lit up when the ignition is on.The brightness of the instrument is dimmed with the side lights signalReplacing bulbs
The warning lights consist of LEDs built into the electronic circuit, and so CANNOT be replaced.CONSTRUCTION FEATURES
The gauges and warning lights which form the instrument panel are grouped in a single instrument containing: electronic speedometerelectronic rev counterfuel level gauge - with reservemethane level gauge, with reserve (only for BIPOWER versions) warning lightsmultifunction display: with milometer/trip recorder - external temperature gauge - digital clock - Trip computer - oil level gauge - digital clock (only for JTD version)
Rear view
The diagram below shows the rear view.
Instrument pin-out
Connector A| Pin | Signal |
|---|---|
| 1 | engine temperature signal |
| 2 | fuel level signal |
| 3 | inertia switch |
| 4 | ABS failure warning light |
| 5 | speedometer signal input |
| 6 | speedometer signal input |
| 7 | Fuel consumption signal (excluding JTD version) |
| 8 | engine overheating signal |
| 9 | methane level in tank - pressure signal(BIPOWER only) |
| 10 | Oil level signal (JTD only) |
| 11 | handbrake warning light signal |
| 12 | N.C. |
| 13 | N.C. |
| 14 | ref. signal oil level (JTD version only) |
| 15 | ref. signal engine temperature (excluding JTD version) |
| 16 | ref. signal fuel level |
| 17 | direct power supply |
| 18 | electronic earth |
| 19 | supply controlled by the ignition |
| 20 | speedometer sensor supply |
| 21 | N.C. |
| 22 | N.C. |
| 23 | N.C. |
| 24 | N.C. |
| 25 | N.C. |
| 26 | petrol/methane manual switching signal(BIPOWER only) |
| 27 | Air Bag failure warning light |
| 28 | passenger Air Bag deactivation warning light |
| 29 | side lights warning light, instrument illumination |
| 30 | speedometer signal output |
| 31 | speedometer signal output |
| 32 | speedometer signal output |
| Pin | Signal |
|---|---|
| 1 | power earth |
| 2 | fuel consumption signal for EOBD (excluding JTD versions) |
| 3 | glow plug preheating warning light (only JTD version) |
| 4 | seat belt fastened warning light (N.C.) |
| 5 | doors open warning light |
| 6 | CODE failure warning light |
| 7 | water in diesel filter warning light (JTD only) |
| 8 | recharging warning light |
| 9 | N.C. |
| Pin | Signal |
|---|---|
| 10 | left direction indicators warning light |
| 11 | right direction indicators warning light |
| 12 | main beam warning light |
| 13 | brake pad wear warning light |
| 14 | EBD failure warning light |
| 15 | low brake fluid level warning light |
| 16 | EOBD/injection system failure warning light |
| 17 | outside temperature signal |
| 18 | minimum engine oil pressure warning light |
OPERATION
Speedometer
The speedometer signal comes from the specific sensor located on the gearbox. The gauge display is produced by an electronic circuit inside the module. There are also some 'repeat' outputs of the signal for other systems which require this information.Rev counter
The engine rpm signal comes from the engine management control unit.The gauge display is produced by an electronic circuit inside the module.Petrol gauge
The fuel level is displayed via electronic circuitry inside the module, which operates the gauge and the reserve warning light (which comes on when the gauge is at about 1/8 of its travel, corresponding to about 8-9 litres remaining in the tank).The internal logic 'dampens' the signal, preventing fluctuations (e.g. the warning light comes on if the signal persists for at least 50 s). During starting, when the ignition is turned on, the warning light comes on for about 4 seconds as a self-test, then goes out.If it stays on flashing, and at the same time the gauge goes to '0', this means that there is a fault in the connection or in the fuel gauge sender unit.Methane gauge (BIPOWER versions only)
The methane level is displayed via electronic circuitry inside the actual module which operates the 6 green LEDs proportionally to the pressure measured in the circuit. The internal logic 'dampens' the signal, preventing fluctuations (e.g. the reading changes when the signal persists for at least 250 ms. ). | The amber warning light comes on when the last of the green LEDs is still lit, thus indicating the reserve condition. The last green LED going out indicates that the methane is completely used up and the system automatically switches over to running on petrol with the appropriate warning light coming on, as described below. |
Buzzer
Inside the instrument there is a buzzer which emits acoustic signals:
- a light signal ('roger beep') when the buttons are pressed;
- a deeper signal as an acoustic warning, together with the display of warning messages and the coming on of warning lights.
Buttons
The '+' and '-' buttons scroll through the various menus on the display.The 'MODE' button gives access to the instrument's configuration menu and the various adjustments:
- short press (less than one second): move on to the next screen;
- long press (about 2 seconds): memorization of the situation displayed and return to initial screen.
The 'TRIP' button allows the Trip Computer to be set and displayed:
- short press (less than one second): move on to the next screen;
- long press (about 4 seconds): reset.
Instrument illumination
The instrument is lit up when the ignition is on. The brightness is attenuated with the side lights signal, and can be adjusted on the specific configuration menu screen.Multifunction display
The multifunction display gives the following information:
- mileometer
- clock
- engine temperature
- engine oil level (JTD versions only)
- external air temperature
- Trip computer function
- Service function
- fault messages
Instrument configuration menu
The instrument has several adjustment and configuration possibilities, managed via the specific menu accessed by the MODE key:
- instrument brightness adjustment
- acoustic signal (buzzer) volume adjustment
- selection of language for display (available languages: Italian, German, English, French, Spanish, Portuguese);
- selection of Trip computer unit of measurement
- selection of 12/24 hour mode (see 'Clock')
- switching on of legal time function (see 'Clock')
- switching on of TRIP B function (see 'Trip Computer')
- access to SERVICE function (see 'Service Function')
Milometer
The milometer displays either the total mileage or the trip mileage. The total km are displayed on start-up.By quickly pressing the 'TRIP' key (less than about 1 s), you change over to trip distance; the display returns to total mileage after 10 seconds, or if the button is pressed quickly. If the button is pressed for longer (more than about 4 seconds) and the milometer is on trip display, you reset the trip recorder. Resetting mileageThe total mileage counter can be reset only once - during the first 200 km - following handling during production or prior to delivery to the Customer. In the case of a new instrument, the mileage reading is preceded by an 'H' (e.g. 'H00199'). After 200 km, the letter H disappears automatically and the reading becomes '000201'. If the two buttons '+' and '-' are pressed simultaneously for about 10 seconds before 200 km, the letter H disappears and the count starts again from '000000'. This operation can only be carried out once!Clock
The digital clock is electronic with quartz oscillator. The tiime is adjusted using the 'MODE', '+' and '-' buttons.The clock is not reset if the battery is disconnected only for an instant (less than about 4 seconds). On the configuration menu, you can select the 12 or 24 hour display. The 'summer time' function is also available, which automatically switches the legal time on or off.Engine temperature
This is a seven-bar gauge; the last bar is red and lights up if the temperature reaches about 111°C. In this case, the indication is accompanied by an acoustic signal (buzzer) and a specific warning message on the display.Oil gauge (jtd versions only)
During starting, when the ignition is turned on, the instrument carries out an initial test for about 4 seconds; the oil level is then displayed for about 5 seconds.External air temperature
In the versions with automatic climate control system, the instrument receives the external air temperature information from the climate control unit. The temperature is always shown on the display. To warn about the risk of ice, i| ... DATA ERROR - CROPPED TEXT | Ошибка данных - Текст обрезан ... |
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