Mitsubishi 3000GT Service Manual page 1282

FULL AUTO AIR CONDITIONING - Troubleshooting
2. Inspection of potentiometer circuit
58
Troubleshooting Hints
Diagnosis
l
No. 31 (Fix blend air damper at MAX. HOT position, or at MAX. COOL position when it is at
MAX. COOL position.)
No. 32 (Fix air selection damper at FACE position, or at FACE position when it is at FACE position.)
Air conditioning control unit terminal voltages
l
Terminal No. Signal name
Blend air damper potentiometer
56
(input)
57
Mode selection damper poten-
tiometer (input)
58
Blend air damper and mode Normally
selection damper potentiometer
60
Sensor power source
Blend air control
Air conditioning control unit
Blend air damper at MAX. COOL position
Blend air damper at MAX. HOT position
Air selection damper at FACE positidn
Air selection damper at DEF. position
Normally
TSB Revision
damper
Comparator
Air selection damper
potentiometer
Condition Terminal voltage
0.1-0.3 v
o v
V
I