Mitsubishi Pajero Pinin 1999 - Troubleshooting

HEATER, AIR CONDITIONER AND VENTILATION ± Troubleshooting
55-5
TROUBLESHOOTING
TROUBLESHOOTING PROCEDURES
Trouble symptom Problem cause Remedy Reference
page
When the ignition
switch is
ª
ON
º
Fuse is defective Replace the fuse ±
sw
it
c
h
i
s
ªONº
,
the A/C does not
o
p
erate
Harness or connector is defective Repair the harness or connector ±
operate
A/C compressor relay is defective Replace the A/C compressor
relay
55-17
A/C compressor magnetic clutch is defective Replace the armature plate, rotor
or clutch coil
55-28
Refrigerant leak or overfilling of refrigerant Replenish the refrigerant, repair
the leak or take out some of the
refrigerant
55-16
Dual pressure switch is defective Replace the dual pressure switch 55-32
A/C switch is defective Replace the blower switch as-
sembly
55-21
Blower switch is defective Replace the blower switch as-
sembly
55-21
Air thermosensor is defective Replace the air thermosensor 55-22
Engine-ECU is defective Replace the engine-ECU ±
When the A/C is
operating, tem-
p
erature inside
Refrigerant leak Replenish the refrigerant and
repair the leak
55-16
pera
t
ure
i
ns
id
e
the passenger
com
p
artment
Dual pressure switch is defective Replace the dual pressure switch 55-32
compar
t
men
t
doesn't decrease
(cool air is not
emitted)
Fan controller is defective Replace the fan controller GROUP14
± Radiator
em
itt
e
d)
Air thermosensor is defective Replace the air thermosensor 55-22
Engine-ECU is defective Replace the engine-ECU ±
Blower fan and
motor do not turn
Fuse is defective Replace the fuse ±
mo
t
or
d
o no
t
t
urn
Harness or connector is defective Repair the harness or connector ±
Blower relay is defective Replace the blower relay 55-17
Blower fan and motor are defective Replace the blower fan and
motor
55-23
Resistor (for blower motor) is defective Replace the resistor 55-22
Blower switch is defective Replace the blower switch as-
sembly
55-26