Downloaded from www.Manualslib.com manuals search engine HEATING
Additional heating
61
161HEATING
Additional heating
OPERATING PRINCIPLE
The vehicle with a G9T engine is fitted with an additional heating system as an option in some countries (Germany,
Nordic countries...). This comprises an engine coolant heater, mainly for starting when cold.
The heater is switched on if the following three conditions are met:
–starting the engine,
–air intake temperature less than 5 ˚C,
–coolant temperature less than 75 ˚C.
The heater is usually switched off when the engine is stopped or the coolant temperature reaches 85 ˚C.
The temperature is measured inside the heater.
The driver does not control operation.
The system is fitted with several safety features (see page 61-3).
The heater is connected as the outlet of the thermoplunger unit on the coolant circuit and operates independently of
this. It is fitted outside the left-hand side member in the front bumper.
61-1
Downloaded from www.Manualslib.com manuals search engine AIR CONDITIONING
Air conditioning compressor
62
62-1
662AIR CONDITIONING
Air conditioning compressor
The G9T engine vehicle is fitted with a variable
geometry air conditioning compressor; that is, the
compressor adapts the flow of refrigerant fluid
according to a difference in pressure between the
compressor inlet and outlet, and not according to the
temperature read by the sensor (omission of the
evaporator sensor).
The system cannot be adjusted
The pressure relief valve is still present but calibrated
differently.
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect the battery.
Drain the refrigerant circuit (see special "AIR
CONDITIONING" manual).
Remove:
–the front right wheel,
–the right-hand wheel arch cover,
–the lower engine cover,
–the air exchanger/throttle body unit pipe after
disconnecting it,.
–the accessories belt (see methods in section 07
"Accessories belt"),Unscrew the two mounting clamps on the compressor
refrigerant pipes and carefully plug the openings.
Unscrew the four mounting bolts from the air
conditioning compressor and remove it.
REFITTING
Refitting is the reverse of removal.
Refrigerant fluid R134a: 800 ± 20 g
