Mitsubishi 380. Manual — part 637
MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPORT FUEL INJECTION (MPI) <3.8L ENGINE>
13A-640
17
Injectors*
2
• Engine
coolant
temperature
: 80
− 95°C
(176
−
203
°F)
• All
accessories
: "OFF"
• Transaxle:
"P" range
Engine is idling 1 - 2 ms
P0201,
P0202,
P0203,
P0204,
P0205,
P0206
P.13A-272
P.13A-280
P.13A-287
P.13A-295
P.13A-302
P.13A-310
2,500 r/min
1 - 3 ms
When engine
is suddenly
revved
1 - 4 ms
23
A/C pressure
sensor
• Engine: running
• A/C switch: "ON"
1275
− 1863 kPa
Procedure
No. 28
26
Long-term fuel
trim bank 1
N/A
27
Long-term fuel
trim bank 2
N/A
28
Short-term fuel
trim bank 1
Engine: warming up, 2,500
r/min without any load (during
closed loop)
-7.0 to 7.0%
Code No.
P0171,
P0172
29
Short-term fuel
trim bank 2
Engine: warming up, 2,500
r/min without any load (during
closed loop)
-7.0 to 7.0 %
Code No.
P0174,
P0175
32
Knock retard
Quick throttle "blips" idle to
3,000 rpm
0 - 4.2
Code No.
P0325
47
Fan duty
Ignition switch: "ON" or with
engine running
0 to 100%
-
-
49
Purge control
solenoid VAL.
duty
Ignition switch: "ON"
0 to 100%
Code No.
P0443
58
Throttle actuator
Ignition switch:
"ON"
Release the
accelerator
pedal
2 to 4 %
Code No.
P2100,
P2101,
P2102,
P2103
P.13A-455
P.13A-461
P.13A-466
P.13A-471
Depress the
accelerator
pedal fully
100 %
59
Target ETV value Ignition switch: "ON"
1.1 V
Procedure
No. 10
72
Absolute engine
load value
• Engine
coolant
temperature
: 80
− 95°C
• Transaxle:"P"
range
Engine is idling 17.3 %
Code No.
P0106,
P0107,
P0108
2,500 r/min
14.9 %
Revving
engine
Volumetric
efficiency increases
according to
amount of revving.
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPORT FUEL INJECTION (MPI) <3.8L ENGINE>
13A-641
73
Calculated load
value
Engine:
warming up
Engine is idling 22.7 %
−
−
2,500 r/min
18.8 %
74
Brake lamp
switch
> 8V +
OFF
Code No.
P1571
Pedal applied
ON
76
A/C switch 1
A/C switch:
"ON"
A/C switch
"OFF"
OFF
Procedure
No. 28
A/C switch
"ON"
ON
79
Cranking signal
Ignition switch:
"ON"
Engine:
stopped
OFF
Procedure
No. 26
Engine:
cranking
ON
83
Power steering
pressure switch
Engine: idling
Steering wheel
stationary
OFF
-
-
Steering wheel
turning
ON
84
Idle position
signal
Engine: idling
Signal
ON
Code No.
P0506,
P0507
Signal
OFF
Engine: not
idling
85
Ignition switch
Ignition switch: IGN switch
"OFF"
OFF
Procedure
No. 26
IGN switch
"ON"
ON
87
Neutral switch
Ignition
switch:"ON"
A/T selector in
"P,R,D"
OFF
Procedure
No. 27
A/T selector in
"N"
ON
89
Normally closed
brake switch
> 8V +
OFF
Code No.
P1571
Pedal applied
ON
93
A/C compressor
clutch relay
• Engine: warming up, idling
• A/C switch: "OFF"
OFF
Procedure
No. 28
• Engine:
warming up,
idling
• A/C switch:
"ON"
A/C
compressor
clutch is not
operating
OFF
A/C
compressor
clutch is
operating
ON
95
Engine control
relay
Battery 8V +
OFF
-
-
Engine
cranking/start
ON
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPORT FUEL INJECTION (MPI) <3.8L ENGINE>
13A-642
97
Fuel pump relay
Ignition
switch:"ON
Fuel pump
operates for 2
seconds &
then stops
ON
Procedure
No. 25
Pump stops
after 2 seconds
OFF
AA
Airflow sensor
• Engine
coolant
temperatur
e: 80
−
95
°C
• Transaxle:"P
" range
Engine is idling 3 to 5 g/sec
Code No.
P0101,
P0102,
P0103
2,500 rpm
13 to16 g/sec
Revving
engine
Increases in
proportion to
amount of revving.
AB
TPS (main)
Ignition
switch:"ON"
Release the
accelerator
pedal
0 %
Code No.
P0122,
P0123
Depress the
accelerator
pedal fully
100 %
AC
Oxygen sensor,
bank 1, sensor 1
(front)
Engine:
Warming up
(Air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)
When the
engine is
running at
4,000 r/min,
decelerate
suddenly.
200 mV or less
Code No.
P0130,
P0131,
P0132,
P0133,
P0134
Engine:
Warm
When engine
is suddenly
revved.
600
− 1,000 mV
Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the ECU.)
Engine is idling Voltage alternates
quckly between
400mV or less and
600
− 1,000mV.
2500 r/min
AD
Oxygen sensor
bank 1, sensor 2
(rear)
Engine:
warming up
Revving
Alternates slowly
between 0 and 600
− 1,000mV .
Code No.
P0136,
P0137,
P0138,
P0139
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MPI) DIAGNOSIS
MULTIPORT FUEL INJECTION (MPI) <3.8L ENGINE>
13A-643
AE
Oxygen sensor
bank 2, sensor 1
(front)
Engine:
Warming up
(air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)
When the
engine is
running at
4000 r/min,
decelerate
suddenly.
200mV or less
Code No.
P0150,
P0151,
P0152,
P0153,
P0154
Engine:
Warm
When engine
is suddenly
revved.
600
− 1,000mV
Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the ECU)
Engine is idling Voltage alternates
quickly between
400mV or less and
600
− 1,000mV.
2,500 r/min
AF
Oxygen sensor
bank 2, sensor 2
(rear)
Engine:
warming up
Revving
Alternates slowly
between 0 and 600
− 1,000mV.
Code No.
P0156,
P0157,
P0158,
P0159
BC
Relative TPS
Ignition
switch:"ON"
Release the
accelerator
pedal
12.5
− 16.5%
Code No.
P0222,
P0223
BD
TPS (sub)
Ignition
switch:"ON"
0
− 100%
Code No.
P0222,
P0223
105
Fuel system
status bank 1
(right)
Engine:
warming up
2,500 r/min
Closed loop
Code No.
P0134
When engine
is suddenly
revved
Open loop
− drive
condition
106
Fuel system
status bank 2
(left)
Engine:
warming up
2,500 r/min
Closed loop
Code No.
P0154
When engine
is suddenly
revved
Open loop
− drive
condition
107
Clutch switch
> 8V +
OFF
Code No.
P0830
Pedal applied
ON
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
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