Mitsubishi Lancer Evolution VI - Page 175

MPI – Troubleshooting
13-64
Terminal
No.
Normal conditionCheck condition (Engine condition)Check item
20 Radiator fan motor
relay (HI)
<EVOLUTION VI>
Radiator fan not operating (coolant temperature:
95_C or below)
System voltage
<
EVOLUTION
-
VI
>
Radiator fan at high speed (coolant temperature:
105_C or above)
0 – 3 V
21 Fan motor relay (LOW)
<EVOLUTION-IV, V>
Fan not operating (coolant temperature: 95_C or
below)
System voltage
Fan at low speed (coolant temperature: 95 – 100_C) 0 – 3 V
21 Radiator fan motor
relay (LOW)
<EVOLUTION VI>
Radiator fan not operating (coolant temperature:
95_C or below)
System voltage
<
EVOLUTION
-
VI
>
Radiator fan at low speed (coolant temperature: 95
– 105_C)
0 – 3 V
22 A/C relay D Engine: Idling
D A/C switch: OFF to ON (Compressor is being
driven.)
System voltage, or 6
V or more instanta-
neously to 0 – 3 V
32 A/C condenser fan
motor relay (HI)
<EVOLUTION VI>
A/C condenser fan not operating (A/C switch: ON,
coolant temperature: 105_C or below)
System voltage
<
EVOLUTION
-
VI
>
A/C condenser fan at high speed (A/C switch: ON,
coolant temperature: 105_C or above)
0 – 3 V
33 Alternator G terminal D Engine: Warm, idle (radiator fan: OFF)
D Headlamp: OFF to ON
D Brake lamp: OFF to ON
D Rear defogger switch: OFF to ON
Voltage rises by 0.2 –
3.5 V.
34 A/C condenser fan
motor relay (LOW)
<EVOLUTION VI>
A/C condenser fan not operating (A/C switch: OFF,
coolant temperature: 105_C or below)
System voltage
<
EVOLUTION
-
VI
>
A/C condenser fan at low speed (A/C switch: OFF,
coolant temperature: 105_C or above)
0 – 3 V
36 Engine warning lamp Ignition switch: OFF → ON 0 – 3 V → System
voltage (After several
seconds have
elapsed)
37 Power steering fluid
pressure switch
Engine: Idling after
warming up
When steering wheel is
stationary
System voltage
When steering wheel is
turned
0 – 3 V
38 Control relay Ignition switch: OFF System voltage
Ignition switch: ON 0 – 3 V
39 Fuel pump relay No.2 While engine is idling, suddenly depress the
accelerator pedal.
Momentarily rises
slightly from 0 to 3 V.
40 Exhaust temperature
warning lamp
Ignition switch: OFF to ON 0 – 3 V to system
voltage (After several
seconds have
elapsed)