LR3/Disco 3
temperatures and a red segment for excessively high temperatures. For normal operating temperatures the gage needle
pointer is positioned centrally in the gage display zone. The needle pointer position translates to the following
approximate temperatures.
AMBIENT LIGHT SENSOR
An ambient light sensor is located in the instrument cluster, adjacent to the alarm indicator. The ambient light sensor is a
phototransistor which measures the available ambient light.
The phototransistor measures the ambient light (lux) level and passes a signal value for the available light level to the
instrument cluster microprocessor. The instrument cluster software adjusts the display brightness of the message center
and information display LCD's accordingly to ensure that the displays are clearly visible during day and night time driving.
MESSAGE CENTER
Refer to Information and Message Center section for details.
INPUTS AND OUTPUTS
A single electrical harness connector provides all inputs and outputs to and from the instrument cluster.
Instrument cluster Harness Connector C0230
Engine Coolant Temperature ºC (ºF) Needle Pointer Position
Ignition off
Park position
40 (104)
Cold (Blue segment)
75 - 115 (167 - 239)
Normal
120 (248)
Start of hot (Red segment)
125 (257)
End of hot
Pin No.
Description
Input/Output
1
High Speed CAN + Positive
Input/Output
2
High Speed CAN - Negative
Input/Output
3
Low oil pressure sensor
Input
4
Low washer fluid level sensor
Input
5
Dimmer switch input - PWM illumination control
Input
6
Seat occupancy status
Input
