Mitsubishi 3000GT Service Manual page 1296

55-76
FULL AUTO AIR
CONDITIONING
INSPECTION
AIR SELECTION DAMPER MOTOR ASSEMBLY CHECK
Check that the motor rotates when battery voltage is applied
to the connector on the motor assembly side.
Check also that the motor rotates in the backward direction
when polarity is changed.
Caution
1. Cut off the voltage when the damper is in the RECIR-
CULATION or FRESH position.
2. Cut off the voltage if the motor does not turn when
battery voltage is applied.
BLEND AIR DAMPER MOTOR CHECK
Check that the motor rotates when battery voltage is applied
across terminals (1) and (3) of motor assembly side connector.
Check also that the motor turns in the backward direction
when polarity is changed.
Caution
1. Cut off the voltage when the damper is in the MAX.
HOT or MAX. COOL position.
2. Cut off the voltage if the motor does not turn when
battery voltage is applied.
BLEND AIR DAMPER POTENTIOMETER CHECK
Connect a circuit tester across terminals (5) and (6) of the
motor assembly connector and check that resistance gradually
changes as the damper is moved from MAX. HOT to MAX.
COOL position.
Standard value
MAX. HOT: Approx. 0.2. m
MAX. COOL: Approx. 4.8 kQ
MODE SELECTION DAMPER MOTOR CHECK
Check that the motor turns when battery voltage is applied
across terminals (1) and (3) of the motor assembly connector.
Check also that the motor turns in the backward direction
when polarity is changed.
Caution
1. Cut off the voltage when the damper is in the DEF.
or FACE position.
2. Cut off the voltage if the motor does not turn when
battery voltage is applied.
MODE SELECTION DAMPER POTENTIOMETER CHECK
Connect a circuit tester across terminals (5) and (6) of the
motor assembly connector and check that resistance gradualty
changes as the damper is moved from DEF. to FACE position.
Standard value
DEF. position: Approx. 0.2 ksz
FACE position: Approx. 4.8 k0
T S B R e v i s i o n