Discovery II
INSTRUMENTS
DESCRIPTION AND OPERATION
88-5
Description
General
The instrument pack consists of four analogue dials, four warning lamp packs and a Liquid Crystal Display (LCD)
odometer.
The four dials are used to indicate:
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Road speed.
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Engine speed.
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Fuel tank level.
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Engine coolant temperature.
The dials are driven by a microprocessor from information received from the serial communication link. Information
input is received as either:
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Digital.
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Analogue.
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Pulse train.
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Pulse Width Modulation (PWM).
The LCD provides information for:
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Odometer.
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Trip distance.
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Selected gear (on vehicles fitted with an automatic gearbox).
A trip reset button is provided to zero the trip display, this button also allows the selection of "miles" or "kilometres"
for the display. A photocell controls the illumination of the LCD, maintaining contrast of the display during ambient light
changes.
Within the four warning lamp packs there are 28 lamps. A long life bulb illuminates the high beam warning lamp and
the rest of the warning lamps are illuminated by Light Emitting Diodes (LED's). All warning lamp legends are invisible
until lit. When lit the symbols are illuminated on a black background.
The warning lamps illuminate in one of four colours. The colour indicates the level of importance to the driver, as
follows:
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Red = warning.
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Amber = caution.
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Green = system operative.
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Blue = main beam operative.
The first warning lamp pack is located in the top left-hand side of the instrument pack and contains the following
warning lamps:
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Traction control warning lamp.
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Transfer box in neutral warning lamp.
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Differential lock warning lamp
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Overspeed warning lamp (activated for gulf market only).
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Brake system warning lamp.
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Hill Descent Control (HDC) information warning lamp.
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Malfunction Indicator Lamp (MIL)/ SERVICE ENGINE SOON warning lamp.
The second warning lamp pack is located in the centre of the instrument pack and contains the following warning
lamps:
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Direction indicator warning lamps.
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High beam warning lamp.
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Anti-lock brake system warning lamp.
