Marea- Marea Weekend
99
range
Auxiliary units
Climate control
50.
FOREWORD
The vehicle's climate control is carried out by one of the following systems:
- HEATER WITH THERMOSTATIC ADJUSTMENT
- AIR CONDITIONER WITH THERMOSTATIC ADJUSTMENT
The two systems are described below jointly because the only difference between the heater and the cli-
mate control system is that the former does not have an air refrigeration circuit: the electronic control unit
which regulates the entire system is, in effect, the same and it recognizes whether or not there is a refrig-
eration circuit from the A/C button which is in the control panel of the version with climate control only.
For anything not dealt with on the pages which follow, refer to the descriptions in the - Marea - Marea
Weekend Service Manual (print n°506.763/01).
4F01AH01
CONNECTION WITH ENGINE MANAGEMENT CONTROL UNIT
The electronic control unit for the climate control system sends a signal to the engine management control
unit giving the necessary go ahead to switch on the compressor.
There are two different type of connection according to the type of engine management control unit:
A:
1242 - 1581 - 1998 - 1910 JTD - 2387 JTD engines
B:
1910 TD 75 (Soft) engine
NOTE For the 1747 version, refer to the instructions in the previous edition.
NOTE For the 1910 TD 75 version, which does not have an engine management control unit, the go
ahead for the operation of the compressor is given by a speical thermal switch and by the EGT
control unit in addition to the four stage pressure switch.
Copyright Fiat Auto
1
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