Mitsubishi Lancer Evolution 7. Manual — part 201
MPI -
Troubleshooting
13A-103
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
14
Throttle
position
Ignition switch: “ON”
Set to idle position
535 - 735 mV
Code No.
P0120
13A-21
position
sensor
Gradually open
Increases in pro-
portion to throttle
opening angle
P0120
Open fully
4,500 - 5,000 mV
16
Battery
voltage
Ignition switch: “ON”
System voltage
Procedure
No. 22
13A-82
18
Cranking
signal
Ignition switch: “ON”
Engine: Stopped
OFF
Procedure
No.22
13A-82
signal
(ignition
switch-ST)
Engine: Cranking
ON
No.22
21
Engine
coolant
temperature
Ignition switch: “ON”
or engine running
When engine coolant
temperature is -20_C
-20_C
Code No.
P0115
13A-19
temperature
sensor
When engine coolant
temperature is 0_C
0_C
When engine coolant
temperature is 20_C
20_C
When engine coolant
temperature is 40_C
40_C
When engine coolant
temperature is 80_C
80_C
22
Crank
angle
sensor
D
Engine: Cranking
D
Tachometer:
Connected
Compare the engine
speed readings on the
tachometer and the
MUT-II.
Accord
-
-
D
Engine: Idle
operation
When engine coolant
temperature is -20_C
1,300 - 1,500
r/min
When engine coolant
temperature is 0_C
1,300 - 1,500
r/min
When engine coolant
temperature is 20_C
1,300 - 1,500
r/min
When engine coolant
temperature is 40_C
1,150 - 1,350
r/min
When engine coolant
temperature is 80_C
600 - 900 r/min
24L
Vehicle
speed
sensor
Drive at 40 km/h
Approximately 40
km/h
Code No.
P0500
13A-43
MPI -
Troubleshooting
13A-104
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
25
Barometric
pressure
Ignition switch: ON
Altitude: 0 m
101 kPa
Code No.
P0105
13A-15
pressure
sensor
Altitude: 0 m
95 kPa
P0105
Altitude: 0 m
88 kPa
Altitude: 0 m
81 kPa
27
Power
steering
fluid
Engine: Idle operation
Steering wheel
stationary
OFF
Code No.
P0551
13A-46
fluid
pressure
switch
Steering wheel turning
ON
28
A/C switch
Engine: Idle operation
(When A/C switch is
A/C switch: OFF
OFF
Procedure
No. 26
13A-92
(When A/C switch is
ON, A/C compressor
should be operating.)
A/C switch: ON
ON
No. 26
34
Air flow
sensor
Engine: After
warm-up
Idle operation
ON
Code No.
P0100
13A-13
sensor
reset
signal
warm up
3,000 r/min
OFF
P0100
37
Volumetric
efficiency
D
Engine coolant
temperature:
Idle operation
15 - 35%
-
-
efficiency
temperature:
85 - 95_C
D
Lightning and
2,500 r/min
15 - 35%
D
Lightning and
accessories:
OFF
Excessive
accelleration
According to ac-
celeration, volu-
metric efficiency
is increased.
41
Injectors*
1
Engine: Cranking
When engine coolant
temperature is 0_C
(injection is carried out
for all cylinders simulta-
neously)
25 - 37 ms
-
-
When engine coolant
temperature is 20_C
15 - 22 ms
When engine coolant
temperature is 80_C
4.2 - 6.3 ms
Injectors*
2
D
Engine coolant
temperature:
80 – 95_C
Engine: Idle operation
1.5 - 2.7 ms
-
-
80 – 95_C
D
Lamps, electric
cooling fan and
all accessories:
2,500 r/min
1.2 - 2.4 ms
all accessories:
OFF
D
Transmission:
Neutral
When engine is sud-
denly raced
Increases
MPI -
Troubleshooting
13A-105
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
44
Ignition ad-
vance
D
Engine: After
having warmed
up
D
Timing lamp is
set (The timing
Engine: Idle operation
0 - 13_BTDC
-
-
set. (The timing
lamp is set in
order to check
actual ignition
timing.)
2,500 r/min
20 - 40_BTDC
45
Idle speed
control
(stepper)
motor
position*
3
D
Engine coolant
temperature:
80 - 90_C
D
Lamps, electric
cooling fan and
all accessories:
OFF
D
Transmission:
A/C switch: OFF
2 - 25 STEP
-
-
D
Transmission:
Neutral
D
Engine: Idle
operation
D
When A/C switch
is ON, A/C
compressor
should be operat-
ing
A/C switch: OFF → ON
Increases by 10 -
70 steps
49
A/C relay
Engine: After having
warmed up/Engine is
idling
A/C switch: OFF
OFF (Compressor
clutch is not oper-
ating)
Procedure
No. 27
13A-92
A/C switch: ON
ON (Compressor
clutch is operat-
ing)
59
Oxygen
sensor
(rear)
Engine: After having
warmed-up
When engine is sud-
denly raced
0 and 600 - 1,000
mV alternate.
Code No.
P0136
13A-27
81L
Learned
value
Engine: After having warmed up, running with no
load at 2,500 r/min. (During air/fuel ratio
feedback control)
-12.5 - 12.5%
-
-
82L
Feedback
Engine: After having warmed up, running with no
load at 2,500 r/min. (During air/fuel ratio
feedback control)
-20 - 20%
-
-
87L
Engine
load
Engine: After having
warmed up
Idle operation
15 - 35%
-
-
load
warmed up
2,500 r/min
15 - 35%
-
-
MPI -
Troubleshooting
13A-106
Item
No.
Reference
page
Inspection
procedure
No.
Normal condition
Inspection contents
Inspection
item
A1L
Oxygen
sensor
(front)
Engine: After having
warmed up
(Air/fuel mixture is
made leaner when
When at 4,000 r/min,
engine is suddenly de-
celerated
200 mV or less
Code No.
P0130
13A-24
made leaner when
decelerating, and is
made richer when
racing.)
When engine is sud-
denly raced
600 - 1,000 mV
Engine: After having
warmed up
(By
using oxygen
sensor check air/fuel
Idle operation
400 mV or less ↔
600 - 1,000 mV
(altered)
sensor, check air/fuel
mixture as well as
control status by
engine-ECU)
2,500 r/min
A2L
Oxygen
sensor
(rear)
Engine: After having
warmed up
When engine is sud-
denly raced
0 and 600 - 1,000
mV alternate.
Code No.
P0136
13A-27
8AL
Throttle
position
sensor
D
Engine: After
having warmed
up
Release the accelera-
tor pedal.
8 - 16%
Code No.
P0120
13A-21
sensor
(Throttle
position
opening
angle)
up
D
Ignition switch:
“ON” (Engine
stopped)
Depress the accelera-
tor pedal gradually.
Increase in re-
sponse to the
pedal depression
stroke.
Depress the accelera-
tor pedal fully.
80 - 100%
NOTE
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