Mitsubishi 3000GT Workshop Manual Supplement page 28

55.16
HEATER,
AIR
CONDITIONER
AND VENTILATION -
TTOUbIEShOOtiNg
Inspection procedure
10
lnside/outside air selection is not possible.
Probable cause
lf
inside/outside
air
selection
is not possible even when the
inside/outside air
changeover switch
is
on, the cause
is
probably a malfunction of the air
selection
damper
motor.
Malfunction of air
selection damper
motor
Mallunction of air
selection damper
Mallunction of
connector
or
harness
Malfunction of
A/C-ECU
o
a
a
a
Inspeclion procedure 14 (Refer to
P.55-22.)
Air
selection damper motor
check
Check
the following
connector:
c-98
Measure
at
the air selection damper motor connector
C-20.
o
Disconnecl
the connector, and measure at the
hamess
side connector.
.
Outside air select button:
ON
.
Voltage between lerminal (1)
and body eaflh
OK: '10
V
r
Inside
air
select button:
ON
.
Voltage
between terminal (2) and
body
earth
OK:
10
V
Check the hamess
between the air selection damper motor and
the
A/C-ECU,
and
repair if
I
Check the trouble
symptom.
I