Causes of malfunctions and methods of their elimination
Attention:
- - The numbers indicate the sequence of testing.
- - Replace or repair faulty parts.
The heater electric fan does not work
a) Check the fuse.
b) Check the heater fan motor relay.
c) Check the heater fan motor.
d) Check the heater fan motor resistor.
d) Check the heater electric fan switch.
e) Check the wiring for breaks or short circuits.
The temperature control switch does not work
a) Check the engine coolant level.
b) Check the air conditioner control panel assembly.
The compressor does not turn on
a) Check the amount of refrigerant in the air conditioning system.
6) Check the fuse.
c) Check the compressor electromagnetic clutch.
d) Check the compressor.
d) Check the refrigerant pressure switch.
e) Check the air conditioner switch.
g) Check the evaporator air temperature sensor.
c) Check the wiring for breaks or short circuits.
The air is not cooling
a) Check the amount of refrigerant in the air conditioning system.
b) Check the system using a measuring manifold.
c) Check the tension of the compressor drive belt.
d) Check the compressor electromagnetic clutch.
d) Check the compressor.
e) Check the refrigerant pressure switch.
[The text of the article was obtained from the website: www.MitsubishiMan.ru]
g) Check the thermistor and the air temperature sensor in the evaporator.
c) Check the air conditioner switch.
i) Check the air conditioner control panel assembly.
k) Check the wiring for breaks or short circuits.
Poor cooling
a) Check the amount of refrigerant in the air conditioning system.
b) Check the tension of the compressor drive belt.
c) Check the compressor electromagnetic clutch.
d) Check the compressor.
d) Check the capacitor.
e) Check the expansion valve.
g) Check the evaporator.
c) Check the high and low pressure line tubes.
i) Check the refrigerant pressure switch.
k) Check the air conditioner control panel assembly.
The air intake mode selection switch does not work
a) Check the air conditioner control panel assembly.
b) Check the air intake mode selection flap servo drive.
The air flow direction selector switch does not work
a) Check the air conditioner control panel assembly.
b) Check the air flow direction selector flap servo drive.
Idle speed does not increase when the air conditioner is on
a) Check the engine control unit.
b) Check the wiring for breaks or short circuits.
The condenser electric fan does not work
a) Check the fuse.
b) Check the condenser fan.
c) Check the engine control unit.
d) Check the wiring for breaks or short circuits.