Liquid Crystal Display (LCD) (Instruments)

Liquid Crystal Display (LCD)

The LCD shows odometer readings up to 999999 miles or kilometres and trip computer readings up to 999.9 miles or kilometres. A trip counter reset button is located at the bottom of the speedometer and resets the counter to zero when pressed for more than two seconds. A short press will change the LCD display from odometer to trip.

The odometer uses the same CAN messages as the speedometer to calculate the distance travelled. If the CAN message fails, the LCD will display the odometer distance and 'Error' alternately for one second each.

On vehicles with JATCO automatic gearbox, the LCD also displays gearbox status information as shown in the following table:

Tachometer

The tachometer is electronically operated and is driven by CAN messages from the ECM. The ECM output is derived from the crankshaft position (CKP) sensor. Loss of the CAN message will cause the tachometer to read zero until the engine speed message is restored.

Petrol models have a maximum tachometer scale reading of 8000 rev/min and diesel models have a maximum scale reading of 6000 rev/min.

The tachometer scale has a red segment which denotes the maximum engine speed for the model. The engine must not be operated beyond the start of the red segment. The maximum engine speed for the models is as follows: l Petrol models - 6500 rev/min l Diesel models - 4500 rev/min.

Three warning lamps are located in the lower part of the tachometer face; Cruise control, Malfunction Indicator Lamp (MIL) and handbrake and brake warning lamp.

Fuel Level Gauge

The fuel level gauge pointer indicates the current fuel level in the fuel tank. The fuel level gauge pointer returns to the empty position when the ignition is switched off.

The gauge is operated by an output from the fuel gauge to the fuel tank sender which is integral with the fuel pump. The sender is a float operated rotary potentiometer which provides a variable resistance to earth for the output from the gauge. Movement of the sender unit float arm varies the electrical resistance across the sender unit, so the voltage of the control signal and the resultant deflection of the gauge pointer are directly related to the level of fuel in the tank. When the sender float is at its lowest point, indicating an empty fuel tank, the resistance to earth is at its greatest.

The measured resistance is processed by the instrument pack to implement an anti-slosh function. This monitors the signal and updates the fuel gauge pointer position at regular intervals. This prevents constant needle movement caused by fuel movement in the tank due to cornering or braking.

A warning lamp is located in the face of the fuel gauge and illuminates when the fuel level is at or below 2.2 gallons (10 litres).