2585421 - Introduction - INSTRUMENT PANEL
NQS OPERATION
The instrument panel is the component which makes it possible to display the main functional parameters of the vehicle for the driver. This instrument panel includes a CAN interface at low speeds to allow dialogue with other system connectors (e.g. engine management control unit, dashboard connector, ...).The instrument panel is available in four versions and these panels have a printed circuit.The instrument panels SHOULD NOT be dismantled in the service network because their assembly requires precision instruments; otherwise serious, irreparable damage can be caused.The panel has several functions with the ignition switched off, such as the adjustment and display of the clock, the switching on of the alarm warning light abd the switching on of the arrow warning lights etc.BASIC VERSION (STANDARD CARGO, STANDARD PANORAMA)
The instrument usage functions for the basic models (standard cargo, standard panorama) are:
- vehicle speed (speedometer);
- mileage (milometer display with total and trip mileage);
- fuel level (gauge and reserve warning light);
- clock (hours and minutes) (integrated in the milometer display);
- warning lights
- headlamp alignment corrector with two buttons (display of control position).
BASIC VERSION (STANDARD CARGO, STANDARD PANORAMA)
SPEEDOMETER (C1)
BASIC VERSION (STANDARD CARGO, STANDARD PANORAMA)
I.L.B. INDICATOR (E1)
BASIC VERSION (STANDARD CARGO, STANDARD PANORAMA)
LCD (G1)
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
like the basic version with the addition of:
- engine rpm (rev counter);
- coolant temperature (gauge and overheating warning light);
- warning lights
- trip computer with LCD display of trip mileage, range, average speed, journey time and average consumption.
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
SPEEDOMETER (C3)
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
REV COUNTER (D1)
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
I.L.B. INDICATOR (E2)
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
COOLANT TEMPERATURE GAUGE (F1)
SUPER VERSION (ELEGANT VAN, ELEGANT PANORAMA)
LCD (G1)
COMPONENTS AND OPERATION
The main components of the instrument panel feature:
- External scale in white and internal scale in red and sector in grey (excluding de-luxe versions);
- Serigraphy lighting and indexes in orange.
- Rev counter (petrol and diesel) without danger zone.
- Coolant temperature gauge with danger area in red.
- LCD always lit up in orange.
- Warning lights.
LCD:
The following are displayed on the LCD DISPLAY:
- clock
- headlamp position
- six figures with seven segments for the milometer
- four figures for the trip meter.
LCD:
All the information from and for the instrument panel is transferred, through the CAN interface at low speed, with the exception of data expressly indicated in the pin out. The fault diagnosis is also carried out through the CAN line.
LCD:
A single AMO MQS 18-way vertical connector is used.PIN OUT
Direct inputs
List of direct input signals:
- + 15 key;
- + battery;
- + lights from dimmer;
- Air Bag failure warning light (only for versions with Air Bag);
- Passenger Air Bag disabled warning light (only for versions with Air Bag);
- Seat belt warning light for Japanese version only;
- CAN line;
- Dipped headlamps signal for headlamp alignment;
Network direct inputs
List of direct input signals:
- Vehicle speed;
- RPM
- Fuel level;
- Fuel consumption
- Coolant temperature
- Mileometer;
- Warning lights
- Network management messages.
Direct outputs
List of direct output signals:
- Headlamp alignment signal;
- Oil level sensor operation;
Network output
- Network management messages and NQS operaton.GENERAL DESCRIPTION
The programming (in the production plant) is carried out with a special instrument, on the vehicle assembly line, using the CAN serial line.The Instrument Panel Connector (NQS) receives all the configuration parameters with a single Fiat EOL (end of line) command. The Instrument Panel therefore memorizes the data.EOL PROGRAMMING
The Instrument Panel Connector (NQS) described so far uses four basic electronic fittings common to all versions, the difference being in the reception of the configuration parameters. If the NQS is replaced in the service network it is configured using the diagnostic equipment (SDC Examiner).If any one of the connectors is not correctly configured or if the various connectors have been configured using incompatible data, then the Instrument Panel display segments used will flash at a frequency of 1 Hz, duty cycle 50%.This procedure is necessary to signal the failed or incomplete personalization of one of more connectors for the CAN network on the vehicle following replacement operations in the service network.NQS PROGRAMMING
The following Instrument Panel Connector (NQS) parameters are personalized, according to the version:
- Tank capacity according to the version (Diesel / Petrol);
- Tank percentage which activates the reserve warning light;
- Oversize percentage in the vehicle speed reading;
- ABS;
- Diesel/Petrol version;
- Right/left hand drive.
 | If the instrument panel does not accept the configuration in the service network, it is necessary to make sure that the product code is correct. |
MILOMETER
View of milometer
MILOMETER
The NQS receives information on the journey distance, via the CAN line, from the Body Computer. This information corresponds to a counter value which is increased by one unit each time 10m is travelled.For every 10 counter values the trip meter is increased and therefore every 1000 metres, the total mileage is increased by 1 km.The internal microprocessor converts the value received at the CAN network from km to miles using a suitable algorhythm.The NQS memorizes the journey data in kilometres and only converts them into miles during the display. The limit for the trip meter remains 999.9 for both the km and miles, whilst the total limit is in kilometres only (399999) equal to around 248,547 miles. | When the limit (399999 km) is exceeded, the display shows 5 dashes at the centre and in place of the figures. |
CLOCK
The clock is shown in the same display as the milometer and is located between the headlamp alignment reading and the milometer figures; the reading is in hours and minutes and goes from 00.00 to 23.59. Each time the battery is connected the clock shows 00:00.The two dots between the hours and the minutes flash every second.The clock adjustment button is in the instrument panel. When it is pressed, the clock adjustment takes place as follows:
- Pressing the button for 0.1 seconds produces an increase of one minute;
- Pressing the button for between 1 and 3 seconds increases the minutes at an increasing speed which varies in a linear manner starting from an increase of 1 minute every 0.5 seconds, up to an increase of 1 minute every 0.2 seconds.
- Continuing to keep the button pressed for longer than 3 seconds causes an increase in 10 minute steps (rounded off to the next ten);
SPEEDOMETER
The instrument panel receives speed information via the CAN line. The value received in this way is increased for the EOF value programmed and is then displayed on the graduated scaleThe calculation error for values expressed in miles (milometer and speedometer) is less than 0.1 %. The panel configuration is for operation in miles. This parameter is only modified at the Magneti Marelli EOL (end of line).The Instrument Panel Connector receives the engine rpm informtion, directly from the engine management control unit and without corrections the panel processes the engine rpm data with a constant time so that the response at zero RPM - end of scale RPM is less than 2 seconds.INDICATOR RECOVERY LOGICS (STEPPING MOTOR)
The recovery of any steps which may be lost by the instrument is guaranteed for each individual indicator. The ''return to zero'' logic for the indicators occurs for every battery disconnecting / reconnecting operation. An (automatic) ''return to zero'' logic is us| ... DATA ERROR - CROPPED TEXT | Ошибка данных - Текст обрезан ... |
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NQS OPERATION
The instrument panel is the component which makes it possible to display the main functional parameters of the vehicle for the driver also signalling possible on board electrical and electronic system failures. This instrument panel includes a CAN interface at low speeds to allow dialogue with other system connectors (e.g. engine management control unit, dashboard connector, ...).The instrument panels SHOULD NOT be dismantled in the service network because their assembly requires precision instruments; otherwise serious, irreparable damage can be caused.The panel has several functions with the ignition switched OFF, such as the adjustment and display of the clock, the switching on of the alarm warning light abd the switching on of the arrow warning lights etc.Instrument panel graphic representation
.
Rear view
.
Rear view
A single AMO MQS 18-way connector is used.
Connector A
| Pin N° | Function | Input / Output |
|---|---|---|
| 1 | + 15 (INT) panel supply | 1 |
| 2 | Signal earth | 1 |
| 3 | +30 battery | 1 |
| 4 | Trip button from steering column switch unit | 1 |
| 5 | N.C. | |
| 6 | C.A.F. signal | U |
| 7 | + Dipped headlamps | 1 |
| 8 | CAN B | I/U |
| 9 | CAN A | I/U |
Connector B
| Pin N° | Function | Input / Output |
|---|---|---|
| 10 | N.C. | |
| 11. | N.C. | |
| 12. | N.C. | |
| 13 | Air Bag fialure warning light | 1 |
| 14 | Passenger Air Bag disabled warning light | 1 |
| 15 | Seat belt not fastened warning light * | 1 |
| 16 | N.C. | |
| 17 | N.C. | |
| 18 | N.C. |
Direct inputs
List of direct input signals:
- + 15 key;
- +30 battery;
- earth;
- CAN line;
- Air Bag failure;
- passenger Air Bag disablement;
- seat belts not fastened (only valid for countries where fitted);
- signal from trip button on steering column switch unit;
- dipped headlamps on signal for C.A.F. (headlamp alignment corrector)
Network input (some examples)
List of direct input signals:
- speedometer signal;
- engine rpm;
- fuel level;
- recharging (D+ alternator);
- network key status signal;
- engine oil pressure;
- + lights for dimmed lighting;
- heater plugs;
- EBD/ABS failure;
- brake fluid level;
- water in diesel filter;
- Vehicle Protection System;
- door/boot opening;
- windscreen/mirror defrosting;
- brake lights, direction indicators/hazard warning lights, side lights, main beam headlamps, flasher/Follow me home, rear fog lamps, fog lights;
Direct outputs
List of direct output signals:
- headlamp alignment signal.
Network output
Network management messages and NQS operaton.ENGINE MANAGEMENT SYSTEM FAILURE WARNING LIGHT (EOBD)
On versions equipped with the EOBD system (Europen On Board Diagnosis) the warning light is amber yellow; it is activated by the engine control unit (check) when the ignition key is turned to the ON position.The EOBD system carries out continuous diagnosis of the components related to the vehicle emissions system, signalling any deterioration of these components by the warning light in the panel coming on together with the message shown on the reconfigurable multifunction display (where fitted).The aim of the system is:
- keeping the efficiency of the system under control;
- signalling an increase in emissions due to a vehicle malfunction;
- signalling the need to replace deteriorated components.
 | Prompt repair of the problem which has caused the warning light to come on is vital in accordance with the legal requirements of the traffic regulations of the country in question. |
Rev counter anti-oscillation logic
The operating logic for the rev counter pointer should be disabled (in other words the indicator shows the actual engine rotation speed) when the vehicle speed is > 4 km/h.The following graph is helpful in understanding this logic better:
Rev counter anti-oscillation logic
For rotation speeds between 0 and the first threshold, the values shown by the rev counter should be extended to the 0 - 608 range with linear features.When the engine speed is between the first and third thresholds, the rev counter should indicate the value of the second threshold thereby determining an insensitivity band for the rev counter. As the number of revs decreases, the insensitivity band indicator input takes place for values below the second threshold.To prevent sudden movements of the rev counter indicator, when the first and third thresholds are exceeded, there is a special movement of the actual indicator. | All the threshold values should be calibrated by the supplier at the end of the line. |
ENGINE COOLANT TEMPERATURE GAUGE
With the ignition switched ON, the pointer should reach the temperature value according to the following logic:
- if T < 50° C, the pointer should be in line with the first reference / graduation on the scale
- if T > 50 ° C the pointer should be positioned on the reference corresponding to the temperature value measured.
ENGINE COOLANT TEMPERATURE GAUGE OPERATING LOGIC
For temperatures equal to T = 50 ° C, the pointer is positioned on the first reference on the scale (start of the scale).For temperature of between 50 - 80° C the pointer should move in a linear manner (between zero and the centre of the scale).For temperatures between 80 - 100° C (normal operation), the pointer should remain stable in the centre of the scale.For temperatures between 100 - 120 ° C (uphill) and between 115 - 100 ° C (downhill) the pointer should move in a linear manner (between the centre of the scale and the start of the red sector).For temperatures equal to T = 120 ± 1 ° C, the pointer should be positioned at the start of the red sector of the scale.For temperatures equal to T ( 122 C the pointer should reach the position corresponding to the start of the red sector and as soon as the Engine Mangement Control Unit sends the warning light on signal, it should be positioned at the end of the scale and the coolant overheating warning light should come on.If the warning light on signal coming from the NCM persists, the pointer remains at the end of the scale and the warning light remains on constantly.If the Engine Management Control Unit sends the signal to switch off the warning light (when the temperature goes below the level T = 115± 1° C), the instrument panel immediately switches off the engine coolant overheating warning light and the pointer returns to the position corresponding to the (actual) temperature value measured.
ENGINE COOLANT TEMPERATURE OVERHEATING WARNING LIGHT
The panel receives information concerning the switching on / off of the warning light via the CAN line.Each time the ignition is turned on the engine management control unit sends the instrument panel the command to switch on the warning light in order to check the communication line or the warning light signal.If the ignition is switched on and the conditions for switching on the warning light exist (engine coolant overheating and warning light already on when the ignition was switched off previously), then the NCM keeps the command to switch on the warning light activated and the instrument panel continues to keep the warning light on and position the pointer at the end of the scale.FUEL GAUGE
The gauge signals the fuel level.The damping logics to avoid incorrect readings due to the fuel splashing around in the tank are located in the NBC. The instrument panel is restricted to displaying the data received at the CAN line.The precision / calibration guaranteed is ± 2 angular degrees throughout the scale.Reserve warning light
The NQS lights up the reserve warning light when the NBC signals a fuel level equal to the value programmed at the EOL for the tank capacity.In order to prevent the reserve warning light from flashing, it comes on with a delay (timed hysteresis) of 5 seconds after the reserve condition occurs; the warning light goes out with a delay of 20 seconds from the moment this condition no longer exists.DIGITAL DISPLAY FEATURES
The following information is shown on the two line digital display + Trip Computer icon:
- total mileage counter (the trip meter is a function of the trip computer);
- clock;
- headlamp alignment corrector reading;
- Trip Computer data (processed by the control panel).
Standard displays (ignition OFF0
With the ignition OFF, the instrument panel display remains off (with both front doors closed).When at least one of the front doors is opened/closed, the digital display should show the following:
- clock;
- total mileage.
Display of the clock function
The ''hh:mm'' (hours : minutes) display should remain on at the key on in ''24 hour'' mode, in other words from 0 to 23 h. The clock should not be displayed with the ignition OFF.The '':'' symbol between the hours and minutes should flash at a frequency of 1 Hz, D.C. 50%.Pressing the ''h+'' and ''h-'' buttons to the right of the control panel increases/decreases the reading in steps of 1 minute.The length of each step depends on the time the button is pressed.
- if t < 2
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