1999 LAND ROVER DISCOVERY warning light

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Page 1208 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual AIR CONDITIONING
DESCRIPTION AND OPERATION 82-19
Diagnostics
The ATC ECU performs a diagnostic check each time the ignition is switched on. To avoid nuisance fault indications 
at low light levels, th

Page 1286 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual LIGHTING
REPAIRS 86-2-13
Switch - hazard warning 
$% 86.65.50 
Remove
1.Carefully remove switch. 
2.Disconnect multiplug from switch. 
3.Remove switch. 
Refit
1.Connect multiplug switch. 
2.Position s

Page 1288 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
DESCRIPTION AND OPERATION 86-3-1
BODY CONTROL UNIT DESCRIPTION AND  OPERAT ION
Description
General
The Body Control Unit (BCU) is located behind the passenger glovebox and is connect

Page 1296 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
DESCRIPTION AND OPERATION 86-3-9
IDM outputs
The IDM receives the following signals from the BCU using the serial datalink to provide power outputs:
Description Signal type System
Un

Page 1298 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
DESCRIPTION AND OPERATION 86-3-11
Programmable options
The BCU can be programmed with a number of options to satisfy specific market requirements and customer 
preferences. The optio

Page 1302 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
DESCRIPTION AND OPERATION 86-3-15
Electric seats
The BCU controls the logical operation of the electrically operated front seats. Two modes of operation are available: 
 
 +  SEATS,

Page 1305 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
86-3-18 DESCRIPTION AND OPERATION
Audible warnings
The BCU can request the instrument pack to generate an audible warning in response to conditions it has detected 
and which need to

Page 1310 of 1529

LAND ROVER DISCOVERY 1999  Workshop Manual BODY CONTROL UNIT
DESCRIPTION AND OPERATION 86-3-23
A timeout function is included which allows the windows and sunroofs to be operated for a period of 44 ± 1 seconds 
after the ignition key has been
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