Range Rover. Manual — part 288
AIR CONDITIONING
9
DESCRIPTION AND OPERATION
Demist mode (PROG) switch. Push switch that
operates the automatic demist function:
•
The PROG switch LED illuminates when
demist is selected.
•
The demist symbol and external air
temperature are displayed.
•
The inlet air source is set to fresh air.
•
The blowers are set to the optimum speed.
•
The LH and RH target air temperatures are
set to maximum.
•
Distribution is set to windscreen/ side
windows and the related switch LED
illuminates.
•
The rear screen heater comes on for a
timed cycle or, if already on, restarts the
timed cycle, and the switch LED
illuminates.
•
The windscreen heaters come on for a
timed cycle or, if already on, restart the
timed cycle, and the switch LED
illuminates.
•
While in the demist mode, the windscreen
and rear screen heaters can be operated to
reset the timers.
•
A second press of the PROG switch
cancels the demist mode. All functions
return to their previous settings.
Windscreen/ Side window distribution switch. Push
switch for manual control of air distribution to direct air
through the windscreen and front side windows vents.
Windscreen/ Side window and footwell distribution
switch. Push switch for manual control of air
distribution to direct air through the windscreen, front
side windows and footwell vents.
Footwell distribution switch. Push switch for manual
control of air distribution to direct air through the
footwell vents.
Face and footwell distribution switch. Push switch for
manual control of air distribution to direct air through
the face level and footwell vents.
Face distribution switch. Push switch for manual
control of air distribution to direct air through the face
level and driver’s lap vents.
LH front seat heater switch. Push switch that operates
the LH front seat heater. Operation is independent
from the air conditioning system. The heater remains
active until the switch is pressed again. The switch
LED is illuminated while the heater is active.
Rear screen heater switch. Push switch for control of
the rear screen heater. A timed function that
automatically goes off after approximately 15 minutes,
or immediately if the switch is pressed again. The
switch LED is illuminated while the heater is active.
The exterior mirror heaters are activated for
approximately 10 minutes when either the windscreen
or rear screen heaters are activated. There is no
active indicator or independent control for the exterior
mirror heaters.
82
AIR CONDITIONING
NEW RANGE ROVER
10
DESCRIPTION AND OPERATION
ATC ECU connectors
AIR CONDITIONING
11
DESCRIPTION AND OPERATION
ATC ECU connector pin details
Connector/
Pin No.
Description
Input/Output
C244 (up to
99MY)
C0792 (from
99MY)
1
Auxiliary power supply
Input
2
Battery power supply
Input
3
Ignition power supply
Input
4
Earth
-
5
Windscreen heaters
Output
6
Instrument/ Switch illumination
Input
7
A/C compressor clutch
Output
8
Condenser fans
Output
C245 (up to
99MY)
C0791 (from
99MY)
1
RH blower control
Output
2
RH blower safety
Output
3
RH blower voltage feedback
Input
4
LH blower control
Output
5
LH blower safety
Output
6
LH blower voltage feedback
Input
7
Ambient air temperature sensor (-)
Input
8
Ambient air temperature sensor (+)
Output
9
RH fresh/ recirculated air servo (+/-)
Input/Output
10
RH fresh/ recirculated air servo (+/-)
Input/Output
11
LH fresh/ recirculated air servo (+/-)
Input/Output
12
LH fresh/ recirculated air servo (+/-)
Input/Output
82
AIR CONDITIONING
NEW RANGE ROVER
12
DESCRIPTION AND OPERATION
Connector/
Pin No.
Description
Input/Output
C246B (up to
99MY)
C0793 (from
99MY)
1
Not used
-
2
Heater coolant temperature sensor
Input
3
Not used
-
4
Sunlight sensor
Input
5
Road speed
Input
6
Diagnostics K line
Input/Output
7
Diagnostics L line
Input/Output
8
Engine running (alternator charging)
Input
9
In-car temperature sensor, thermistor supply
Output
10
Sensor earth (evaporator temperature, heater coolant
temperature and sunlight sensors)
Input
11
LCD dimming
Input
12
Evaporator temperature sensor
Input
13
A/C request
Output
14
A/C grant
Input
15
In-car temperature sensor, aspirator earth
Input
16
In-car temperature sensor, aspirator supply
Output
17
Rear screen heater request
Output
18
In-car temperature temperature sensor, thermistor
earth
Input
19
RH seat heater request
Output
20
LH seat heater request
Output
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