L322 Range Rover System Description and Operation
AIR CONDITIONING
82-24
DESCRIPTION AND OPERATION
ATC ECU Harness Connector C1629 Pin Details
ATC ECU Harness Connector C1630 Pin Details
ATC ECU Harness Connector C2295 Pin Details
Pin No.
Description
System
Input/Output
Low
High
1
Ignition power supply
Yes
Yes
Input
2
Sunlight sensor ground
No
Yes
–
3
K bus
Yes
Yes
Input/Output
4
Delayed accessory power
Yes
Yes
Input
5
LH coolant valve
Yes
Yes
Output
6
RH coolant valve
No
Yes
Output
7
HRW relay
Yes
Yes
Output
8
Windscreen washer jet heater relay
Yes
Yes
Output
9
Auxiliary coolant pump
Yes
Yes
Output
10
Refrigerant pressure sensor signal
Yes
Yes
Input
11
Not used
–
–
–
12
Pollution sensor signal
No
Yes
Input
13
Pollution sensor power supply
No
Yes
Output
14
Windscreen heater relay
Yes
Yes
Output
15
LH seat heating temperature sensor
Yes
Yes
Output
16
RH seat heating temperature sensor
Yes
Yes
Output
17
Engine full load signal
Yes
Yes
Input
18
LH sunlight sensor signal
No
Yes
Input
19
RH sunlight sensor signal
No
Yes
Input
20
Refrigerant pressure sensor ground
Yes
Yes
–
21
Refrigerant pressure sensor power supply
Yes
Yes
Output
22
Coolant changeover valve
Yes
Yes
Output
23
Instrument illumination
Yes
Yes
Input
24
Sunlight sensor power supply
No
Yes
Output
25
Pollution sensor heater ground
No
Yes
–
26
Pollution sensor heater power supply
No
Yes
Output
Pin No.
Description
System
Input/Output
Low
High
1
Battery power supply
Yes
Yes
Input
2
A/C compressor clutch
Yes
Yes
Output
3
System ground
Yes
Yes
–
Pin No.
Description
System
Input/Output
Low
High
1
M bus power supply
No
Yes
Output
2
M bus ground
No
Yes
–
3
M bus interface line
No
Yes
Input/Output
