Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 389

55-12
HEATER, AIR CONDITIONER AND VENTILATION HEATER, AIR CONDITIONER AND VENTILATION
CHECK AT THE ENGINE-ECU TERMINAL
Terminal no. Check item
21 Fan controller output
22 A/C compressor output
24 A/C-ECU input (A/C2)
32 Condenser fan motor relay (HI)
34 Condenser fan motor relay (LOW)
45 A/C-ECU input (A/C1)
CHECK AT THE A/C-ECU TERMINAL <L.H.drive vehicles>
Termi- Check item
nal no.
1 Rear defogger switch gg
2 Inside/outside
d damper motor (outside air) t (
3 Inside/outside
d damper motor (inside air) t (i
4 Engine-ECU output (A/C1) g
5 Engine-ECU output (A/C2) g
6 Illumination power supply
7 -
8 Blower switch (LO)
p
p p
Check when
Defogger switch: ON
Defogger switch: OFF
air changeover g When damper moved to inside circulation position
t id i )
When damper moved to outside air induction
position
When damper moved to inside circulation position
air changeover g
id i )
When damper moved to outside air induction
position
p ( ) When A/C OFF
A/C switch: ON, blower: ON (room temperature)
p ( ) At A/C low load
At A/C high load
Lighting switches: ON
-
Blower switch: LO
- -
Troubleshooting Troubleshooting
Check when
Radiator fan: ON
Radiator fan: OFF
A/C compressor relay: OFF
A/C compressor relay: ON
At A/C low load
Fan: OFF(engine coolant temperature:90_C
or lower)
Fan: ON(engine coolant
ture:105_C or lower)
Fan: OFF(engine coolant temperature:90_C
or lower)
Fan: ON(engine coolant
ture:105_C or lower)
A/C ON (When dual pressure switch is ON)
Normal state
0 - 0.3 V
0.7 V or more
0 V
Battery voltage
or temporarily
6V or more→
1V or less
Battery voltage
Battery voltage
tempera- 1V or more
Battery voltage
tempera- 1V or more
Battery voltage
Normal state
0 V
Battery voltage
0 V
Battery voltage
Battery voltage
0 V
0 V
Battery voltage
Battery voltage
0 V
Battery voltage
-
Battery voltage