Mitsubishi Lancer Evolution VI - Page 388

HEATER AND MANUAL AIR CONDITIONER – Troubleshooting
55-5
No. Trouble symp-
tom
Problem cause Remedy Refer-
ence
page
1 When the igni-
tion switch is
“ON”, the A/C
does not oper
Refrigerant leak or overfilling of refriger-
ant
Replenish the refrigerant, repair the
leak or take out some of the
refrigerant
55-6
d
oes not oper-
ate.
A/C compressor relay is defective Replace the A/C compressor relay 55-14
ate.
A/C compressor magnetic clutch is
defective
Replace the A/C compressor magnet
clutch
55-26
Dual pressure switch is defective Replace the dual pressure switch 55-13
A/C switch is defective Replace the A/C switch 55-17
Blower switch is defective Replace the blower switch 55-17
Air thermo-sensor is defective Replace the air thermo-sensor 55-22
Refrigerant temperature switch is defec-
tive
Replace the refrigerant temperature
switch
55-25
Automatic compressor-ECU is defective Replace the automatic compressor-
ECU
–
2 When the A/C is
operating, tem-
perat re inside
Refrigerant leak Replenish the refrigerant and repair
the leak
55-6
perature inside
the
p
assen
g
er
Dual pressure switch is defective Replace the dual pressure switch 55-13
the
passenger
compartment
doesn
’
tde
-
Air thermo-sensor is defective Replace the air thermo-sensor –
doesn t
de
-
crease (cool air
is not emitted)
Condenser fan relay is defective Replace the condenser fan relay 55-14
is not emitted).
Condenser fan motor is defective Replace the condenser fan motor 55-29
Radiator fan relay (HI, LO) is defective Replace the radiator fan relay (HI, LO) 55-14
Radiator fan motor is defective Replace the radiator fan motor –
Refrigerant temperature switch is defec-
tive
Replace the refrigerant temperature
switch
55-25
Automatic compressor-ECU is defective Replace the automatic compressor-
ECU
–
3 Blower fan mo-
tor doesn’t turn
Blower switch is defective Replace the blower switch 55-17
tor doesn’t turn.
Blower relay is defective Replace the blower relay 55-13
Resistor is defective Replace the resistor 55-21
Blower fan motor is defective Replace the blower fan motor 55-21
4 Blower fan mo-
tor doesn’t stop
t rning
Defective harness between the blower
fan motor and the blower switch
Repair the harness –
turning.
Blower switch is defective Replace the blower switch 55-17
Resistor is defective Replace the resistor 55-21
5 When the A/C is
operating con
Condenser fan relay is defective Replace the condenser fan relay 55-14
operating con-
denser fan or
Condenser fan motor is defective Replace the condenser fan motor 55-29
denser
an
or
radiator fan
does not run
Radiator fan relay (HI, LO) is defective Replace the radiator fan relay (HI, LO) 55-14
does
not
run
.
Radiator fan motor is defective Replace the radiator fan motor –
Dual pressure switch is defective Replace the dual pressure switch 55-13
Engine-ECU is defective Replace the engine-ECU –