Mitsubishi Stealth 1994 Import Service Manual page 1244

24-52
FULL AUTO AIR CONDITIONING
Inspection of engine coolant temperature sensor and photo sensor circuits
4.
<Engine coolant temperature sensor>
Air conditioning
control panel
sensor
Troubleshooting Hints
l Air conditioning control unit terminal voltages
Terminal No.
69 Photo sensor 0
70 Photo sensor 0
59 Engine coolant temperature
sensor 0
Potentiometer
Damper drive
motor
Signal name
llluminance 100,000 Iux or more
llluminance less than 0 Iux
Normally
Switch OFF [Engine coolant temperature
less than 50°C (122"F)]
Switch ON [Engine coolant temperature
<Photo sensor>
Air conditioning
Each sensor Air control panel
control unit
compensating circuit
Photo
sensor
Condition
Terminal voltage
-0.1 to-o.2 v
o v
o v
Battery positive
voltage
0 V