Mitsubishi Lancer Evolution 8. Manual — part 175
MPI – TROUBLESHOOTING
13A-86
Remarks
*1. The duration that injectors operate represents the time during which the power supply voltage is 11V, and cranking speed
is 250rpm or less.
*2. When the vehicle is new (500km or less on the clock), the injector operating time may be as much as 10% longer than the
standard time.
*3. When the vehicle is new (500km or less on the clock), the stepper motor step may be as much as 30 steps more than the
standard value.
★
This is not shown when check motor service data is selected.
Item
No.
Check
Items
Checking Conditions
Normal
condition
Code No. or
Checking
Procedure
No.
Page
Rapid
deceleration
from 4,000rpm
200mV or less
Engine: after warming up
((lean by decelerating,
rich by racing)
During harsh
racing
600 to 1,000mV
Idle running
A1
★
O
2
sensor
Engine: after warming up
(as well as using the O
2
sensor signal to check
air/fuel ratio), control
status is checked by
engine ECU
2,500rpm
400mV or less
600
↔
1,000m
V (changes)
Code
No.P0130
13A-16
24
★
Vehicle
speed
sensor
Driving at 40km/h
Approx. 40km/h
Code
No.P0500
13A-30
81
★
Learned
value
Engine: warmed up, no load 2,500rpm
(during fuel/ratio feedback control)
-12.5 to 12.5%
Code
No.P0170
13A-19
82
★
Feedback
Engine: warmed up, no load 2,500rpm
(during fuel/ratio feedback control)
-20 to 20%
Code
No.P0170
13A-19
Idle running
15 to 35%
-
-
87
★
Engine
load
Engine: after warming up
2,500rpm
15 to 35%
-
-
Foot off the
throttle pedal
8 to 16%
Foot
depressing
throttle pedal
Increases in
response to
pedal pressure
8A
★
TPS1
(Throttle
valve
opening)
•
Engine: after
warming up
•
Ignition switch: ON
(engine stopped)
Throttle pedal
fully open
80 to100%
Code
No.P0120
13A-13
MPI – TROUBLESHOOTING
13A-87
7. ACTUATOR TEST TABLE
Item
No.
Check
Items
Drive details
Checking Conditions
Normal
condition
Code No. or
Checking
Procedure
No.
Page
01
No.1
injector
Cuts fuel to No.1
injector
Code
No.P0201
13A-20
02
No.2
injector
Cuts fuel to No.2
injector
Code
No.P0202
13A-21
03
No.3
injector
Cuts fuel to No.3
injector
Code
No.P0203
13A-22
04
No.4
injector
Cuts fuel to No.4
injector
Engine: after warming up, engine
idling
(Fuel supply to each injector is
cut in turn. Cylinders where the
idling condition does not change
are checked)
Idling
condition
changes
(either
fluctuating,
or stalling
engine)
Code
No.P0204
13A-23
Pinch the
return hose
with fingers,
and feel for
the pulse of
fuel flowing
Pulse is
felt
07
Fuel
pump
Fuel pump which
circulates fuel
operates
•
Engine:
cranking
•
Fuel pump:
forced driving
Checks to be
done for both the
above conditions
Listen for the
sound of the
pump near
the fuel tank
Operating
noise is
audible
Procedure
No.23
13A-63
08
Purge
control
solenoid
valve
Solenoid valve
turns from OFF
to ON
Ignition switch: ON
Operating
noise is
audible
when
driven
Procedure
No.30
13A-75
09
Fuel
pressure
control
solenoid
valve
Solenoid valve
turns from OFF
to ON
Ignition switch: ON
Operating
noise is
audible
when
driven
Procedure
No.31
13A-76
12
Waste
gate
solenoid
valve
Solenoid valve
turns from OFF
to ON
Ignition switch: ON
Operating
noise is
audible
when drive
Procedure
No.33
13A-78
13
Fuel
pump
relay - 3
Fuel pump relay
–3 turns from
OFF to ON
•
Ignition switch: ON
•
Listen for sound of pump
operating near the fuel tank
Operating
noise is
audible
when
driven
Procedure
No.23
13A-63
17
Standard
ignition
timing
Sets engine ECU
to ignition timing
adjustment mode
•
Engine: idling
•
Timing light is set
5ºBTDC
-
-
21
Fan
controller
Radiator fan
motor is driven
Ignition switch: ON
Fan motor
rotates at
high
speed
Procedure
No.24
13A-65
36
Secondary
air control
solenoid
valve
Solenoid valve
turns from OFF
to ON
Ignition switch: ON
Operating
noise is
audible
when
driven
Procedure
No.32
13A-77
37
Condenser
fan (HI)
Condenser fan
motor is driven
•
Ignition switch: ON
Fan motor
rotates at
high
speed
38
Condenser
fan (LOW)
Condenser fan
motor is driven
•
Ignition switch: ON
Fan motor
rotates at
low speed
Procedure
No.25
13A-67
MPI – TROUBLESHOOTING
13A-88
8. ENGINE ECU CHECKS
8-1 Terminal voltage chart
Engine ECU connectors
Item
No.
Check Items
Checking Conditions (engine condition)
Normal condition
1
No.1 injector
9
No.2 injector
24
No.3 injector
2
No.4 injector
Engine: after warming up, from engine idling
the throttle pedal is suddenly depressed
(Fuel supply to each injector is cut in turn.
Cylinders where the idling condition does not
change are checked)
Momentary slight drop from 11 to 14V
Engine: idling
1V or less
3
O
2
sensor
Engine: 5,000 rpm
Battery voltage
5
Secondary air
control solenoid
valve
Ignition switch: ON
Battery voltage
8
Alternator G
terminal
•
Engine: after warming up, idling
•
Radiator fan: not operating
•
Headlights: OFF
→
ON
•
Brake light: OFF
→
ON
•
Rear demister switch: OFF
→
ON
Voltage increase 0.2 to 3.5V
11
Ignition coil
No.1 – No.4
12
Ignition coil
No.2 – No.3
Engine: 3,000rpm
0.3 to 3.0V
14
Stepper motor
coil (A1)
28
Stepper motor
coil (A2)
15
Stepper motor
coil (B1)
29
Stepper motor
coil (B2)
Engine: Immediately after warm engine has
finished starting up
Battery voltage
↔
0 to 6V (repeatedly changing)
Ignition switch: ON
Battery voltage
16
Purge control
solenoid valve
Engine: idling
1V or less
Radiator fan not operating
0 to 0.3V
18
Fan controller
Radiator fan operating
0.7V or more
Engine: idling
0 to 1V
19
Air flow sensor
reset signal
Engine: 3,000rpm
6 to 9V
20A/C relay
•
Engine: idling
•
A/C switch: OFF
→
ON (compressor
operating)
Battery voltage or transient 6V or more
→
1V or
less
Ignition switch: ON
Battery voltage
21
Fuel pump
relay
Engine: idling
1V or less
22
Engine warning
light
Engine switch: LOCK (OFF)
→
ON
1V or less
→
Battery voltage (after several
seconds)
Fan not operating (cooling water temp.: 90ºC
or less)
Battery voltage
30Compressor
fan motor relay
(HI)
Fan high speed operation (cooling water
temp.: 105ºC or more)
1V or less
26038AU
MPI – TROUBLESHOOTING
13A-89
Item
No.
Check Items
Checking Conditions (engine condition)
Normal condition
Fan not operating (cooling water temp. 90ºC)
or less)
Battery voltage
31
Condenser fan
motor relay
(LOW)
Fan low speed operation (cooling water temp.
95ºC to 100ºC or more)
1V or less
Ignition switch: ON
Battery voltage
35
Intercooler
spray relay
Ignition switch: LOCK (OFF)
1V or less
Battery voltage
41
Waste gate
solenoid valve
Ignition switch: ON
Engine: after warming up, idling (using
Premium petrol)
1V or less
42
Voltage applied
to sensor
Ignition switch: ON
4.9 to 5.1V
Engine: cranking
0.4 to 4.0V
43
Crank angle
sensor
Engine: idling
1.5 to 2.5V
When water temp.:-20ºC
3.9 to 4.5V
When water temp.: -0ºC
3.2 to 3.8V
When water temp.:20ºC
2.3 to 2.9V
When water temp.:40ºC
1.3 to 1.9V
When water temp.:60ºC
0.7 to 1.3V
44
Water temp.
sensor
Ignition
switch:ON
When water temp.:80ºC
0.3V to 0.9V
45
Tachometer
output
Engine speed: 3,000rpm
0.3 to 3.0V
47
59
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: ON
Battery voltage
48
Fuel pressure
control solenoid
valve
Engine: Cranking
→
idling (within about 2
minutes)
1V or less
→
Battery voltage
Engine: cranking
0.4 to 3.0V
50Cam position
sensor
Engine: idling
0.5 to 2.0V
At altitude 0m
3.8 to 4.2V
At altitude 600m
3.5 to 3.9V
At altitude 1,200m
3.3 to 3.7V
51
Atmospheric air
pressure
sensor
Ignition switch: ON
At altitude 1,800m
3.0 to 3.4V
52
Alternator FR
terminal
•
Engine: after warming up, idling
•
Radiator fan: not operating
•
Headlights: OFF
→
ON
•
Brake lights: OFF
→
ON
•
Rear demister switch OFF
→
ON
Voltage drops
54
Power steering
fluid pressure
switch
Engine: after
warming up, idling
Steering wheel: still
condition
Battery voltage
55
Fuel pump
relay –3
Engine: From idling condition, throttle pedal is
depressed suddenly
From 1V or less, there is a slight momentary
increase
Ignition switch: LOCK (OFF)
Battery voltage
57
Engine control
relay
Ignition switch: ON
1V or less
60Back-up power
supply
Ignition switch: LOCK (OFF)
Battery voltages
Engine: idling
61
Air flow sensor
Engine: 2,500rpm
2.2 to 3.2V
When intake air
temp.:-20ºC
3.8 to 4.4V
When intake air
temp.: -0ºC
3.2 to 3.8V
When intake air
temp.:20ºC
2.3 to 2.9V
When intake air
temp.:40ºC
1.5 to 2.1V
When intake air
temp.:60ºC
0.8 to 1.4V
62
Intake air temp.
sensor
Ignition switch: ON
When intake air
temp.:80ºC
0.4 to 1.0V
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