Mitsubishi Lancer Evolution VI - Page 176

MPI – Troubleshooting
13-65
Terminal
No.
Normal conditionCheck condition (Engine condition)Check item
41 Alternator FR 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 drops by 0.2 –
3.5 V.
45 A/C switch Engine: Idle speed Turn the A/C switch OFF 0 – 3 V
Turn the A/C switch ON
(A/C compressor is oper-
ating)
System voltage
60 Oxygen sensor heater
<EVOLUTION V VI>
Engine: Idling 0 – 3 V
<
EVOLUTION
-
V
,
VI
>
Engine speed: 5,000 r/min System voltage
71 Ignition switch-ST Engine: Cranking 8 V or more
72 Intake air temperature
sensor
Ignition switch: ON When intake air tempera-
ture is 0_C
3.2 – 3.8 V
When intake air tempera-
ture is 20_C
2.3 – 2.9 V
When intake air tempera-
ture is 40_C
1.5 – 2.1 V
When intake air tempera-
ture is 80_C
0.4 – 1.0 V
76 Oxygen sensor Engine: Running at 2,000 r/min after having been
warmed up (Check using a digital type voltmeter)
0 ↔ 0.8 V
(Changes repeatedly)
80 Backup power supply Ignition switch: OFF System voltage
81 Sensor impressed
voltage
Ignition switch: ON 4.5 – 5.5 V
82 Ignition switch-IG Ignition switch: ON System voltage
83 Engine coolant
temperature sensor
Ignition switch: ON When engine coolant
temperature is 0_C
3.2 – 3.8 V
When engine coolant
temperature is 20_C
2.3 – 2.9 V
When engine coolant
temperature is 40_C
1.3 – 1.9 V
When engine coolant
temperature is 80_C
0.3 – 0.9 V
84 Throttle position sensor Ignition switch: ON Set throttle valve to idle
position
0.3 – 1.0 V
Fully open throttle valve 4.5 – 5.5 V
85 Barometric pressure
sensor
Ignition switch: ON When altitude is 0 m 3.7 – 4.3 V
sensor
When altitude is 1,200 m 3.2 – 3.8 V
86 Vehicle speed sensor D Ignition switch: ON
D Move the vehicle slowly forward
0 ↔ 5 V
(Changes repeatedly)