Mitsubishi MOTORS Lancer 2005, Workshop Manual Supplement

Page: 79 / 109

MPI <4G63>
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Troubleshooting
13D-74
Terminal
No. Normal condition Check condition (Engine condition) Check item
54 Alternator FR
terminal D Engine: Warm, idle (radiator fan: OFF)
D Headlamp: OFF
o
ON
Voltage decreases
terminal Headlamp: OFF ON
D
Stop lamp: OFF
o
ON
D Rear defogger switch: OFF
o
ON
55 Barometric pres-
sure sensor
Ignition switch:
“ON”
When altitude is 0 m 3.8
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4.2 V
sure sensor “ON”
When altitude is
600 m 3.5
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3.9 V
When altitude is
1,200 m 3.3
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3.7 V
When altitude is
1,800 m 3.0
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3.4 V
56 Camshaft position
sensor Engine: Cranking 0.4
ï
3.0 V
sensor
Engine: Idling 1.5
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3.0 V
58 Ignition switch
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ST Engine: Cranking 8 V or more
61 A/C load signal Refer to GROUP 55
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Troubleshooting
(Inspection at Automatic compressor
ï
ECU terminal)
64 Intake air
temperature
sensor Ignition switch:
“ON” When intake air tem-
perature is
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20 _ C
3.8
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4.4 V
sensor
When intake air
temperature is 0
_ C
3.2
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3.8 V
When intake air
temperature is 20
_ C
2.3
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2.9 V
When intake air
temperature is 40
_ C
1.5
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2.1 V
When intake air
temperature is 60
_ C
0.8
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1.4 V
When intake air
temperature is 80
_ C
0.4
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1.0 V
65 Air flow sensor Engine: Idle speed 2.2
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3.2 V
Engine r/min: 2,500 r/min
66 Backup power
supply Ignition switch: “LOCK” (OFF) System voltage
71 Oxygen sensor
(front)
Engine: Running at 2,500 r/min after warmed
up (Check using a digital type voltmeter) 0
l
0.8 V (Changes repeatedly)
73 Oxygen sensor
(rear)
Engine: Idling after warmed up (Check using
a digital type voltmeter) 0
l
0.6 V (Changes repeatedly)
78 Throttle position
sensor
Ignition switch:
“ON”
Set throttle valve to
idle position 0.535
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0.735 V
Fully open throttle
valve
4.4
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5.3 V