LR3/Disco 3
Hot Start Electrical Load Management
Continuous Electrical Load Management
Engine idle speed changes, and electrical load changes of systems not under direct control of the ATCM (air suspension
and entertainment), are initiated using the appropriate medium speed CAN bus message. When partial operation is
requested:
The air suspension system still performs height changes but reduces air compressor operation by not replenishing
the reservoir.
The entertainment system restricts the maximum volume level and reduces the output frequency bandwidth.
Cooling Fan Control
The ATCM determines the amount of condenser cooling required from the refrigerant pressure, since there is a direct
relationship between the temperature and pressure of the refrigerant. The cooling requirement is transmitted to the ECM
in a medium speed CAN bus message. The ECM controls the condenser cooling using the cooling fan. For additional
information, refer to
Electronic Engine Controls
(303-14A Electronic Engine Controls - 4.0L)
For additional information, refer to
Electronic Engine Controls
(303-14B Electronic Engine Controls - 4.4L)
For additional information, refer to
Electronic Engine Controls
(303-14C Electronic Engine Controls - 2.7L Diesel)
Air Temperature Control
10
-
Primary climate control blower
-
11
Auxiliary climate control blower
-
12
Rear window heater
-
13
Windshield heater
Priority
System
Power Reduction Inhibited
-
1
Front seat heaters; windshield washer jet and exterior mirror heaters
2
-
Windshield heater
3
-
Rear window heater
4
-
Air suspension
5
-
Entertainment system
-
6
Windshield heater
-
7
Rear window heater
8
-
Auxiliary climate control blower
-
9
Auxiliary climate control blower
Priority
System
Power Reduction Inhibited Operation
-
1
Front seat heaters
2
-
Windshield heater
3
-
Rear window heater
4
-
Auxiliary climate control blower
5
-
Air suspension
6
-
Entertainment system
-
7
Auxiliary climate control blower