Mitsubishi Lancer Evolution X. Manual - part 444

 

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Mitsubishi Lancer Evolution X. Manual - part 444

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-841

CHECK AT THE ENGINE CONTROL MODULE (ECM)

M1131153501435

1. Disconnect the ECM connectors B-09 and B-10, 

and connect check harness special tool 
MB992110 between the ECM connectors.

2. Measure the voltage between each check 

harness connector terminal and check harness 
connector ground terminal (No. 81 or No. 93).

Injector 
stop

1

Injectors

Specified 
injector is 
stopped.

Engine: warm 
up, idle (cut the 
fuel supply to 
each injector in 
turn and check 
cylinders which 
don't affect 
idling.)

Idle 
condition is 
changed by 
stopping 
selected 
cylinder: 
this can 
cause an 
unstable 
condition 
and the 
engine may 
stall.

Code No. 
P0201, 
Code No. 
P0202, 
Code No. 
P0203, 
Code No. 
P0204

P.13A-298

, 

P.13A-308

, 

P.13A-318

, 

P.13A-328

Oil control 
valve

17

Intake engine 
oil control 
valve, exhaust 
engine oil 
control valve

Switch the 
intake 
engine oil 
control 
valve and 
exhaust 
engine oil 
control 
valve from 
OFF to ON.

Ignition switch: 
"ON"

When the 
valve is 
actuated, 
operating 
noise is 
audible.

Code No. 
P0010, 
P0013

P.13A-56

, 

P.13A-67

Waste gate 
solenoid 
valve

20

Turbocharger 
wastegate 
solenoid 1, 
turbocharger 
wastegate 
solenoid 2

Solenoid 
valve turns 
from OFF 
to ON.

Ignition switch: 
"ON"

Clicks 
when 
solenoid 
valve is 
driven.

Code No. 
P0243, 
P0247

P.13A-352

, 

P.13A-359

M.U.T.-III 
SCAN TOOL 
DISPLAY

ITEM 
NO.

INSPECTION 
ITEM

DRIVE 
CONTENTS

INSPECTION 
REQUIREMENT

NORMAL 
CONDITION

INSPECTION 
PROCEDURE 
NO.

REFERENCE 
PAGE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-842

TERMINAL VOLTAGE CHECK CHART

NOTE: *

1

: The average voltage through an analog voltmeter is described in this service manual (because the 

average voltage would be not constantly shown on a digital voltmeter).
NOTE: *

2

: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" 

position but is no problem for checks.

AK604559

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

16 15 14 13 12 11 10 9 8 7 6 5 4 3

2

1

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

B-09

B-10

Check harness special tool MB992110 connector terminal arrangement

AD

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

1

Intake engine oil 
control valve

Ignition switch: "ON"

B+

Engine: Warming up, under the high load 
operation.

4 − 10 V

*1

2

No. 1 injector

Engine: While engine is idling after having 
warmed up, suddenly depress the accelerator 
pedal.

From 9 − 15 V*

1

, it 

is slightly reduced 
temporarily.

3

No. 2 injector

18

No. 3 injector

19

No. 4 injector

4

Ignition coil No. 1 
(ignition power 
transistor

Engine: 3,000 r/min

0.1 − 2.0 V*

1

5

Ignition coil No. 2 
(ignition power 
transistor

20

Ignition coil No. 3 
(ignition power 
transistor

21

Ignition coil No. 4 
(ignition power 
transistor

6

Starter active signal Engine: cranking

B+

Engine: idling

1 V or less

7

Exhaust camshaft 
position sensor

Engine: cranking

2.0 − 4.8 V*

1

Engine: idling

2.0 − 3.0 V*

1

8

Crankshaft position 
sensor

Engine: cranking

0.4 − 4.0 V*

1

Engine: idling

2.0 − 3.0 V*

1

9

Sensor supplied 
voltage

Ignition switch: "ON"

4.9 − 5.1 V

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-843

10

Throttle position 
sensor (main)

• Remove the 

intake air hose 
at the throttle 
body

• Disconnect the 

throttle position 
sensor 
connector, and 
then connect 
terminal 
numbers No. 3, 
No. 4, No. 5 
and No. 6 with 
the use of the 
special tool: 
MB991658.

• Ignition switch: 

"ON"

Fully close the throttle valve 
with your finger

0.3 − 0.7 V

Fully open the throttle valve 
with your finger

4.0 V or more

11

Throttle position 
sensor (sub)

• Remove the 

intake air hose 
at the throttle 
body

• Disconnect the 

throttle position 
sensor 
connector, and 
then connect 
terminal 
numbers No. 3, 
No. 4, No. 5 
and No. 6 with 
the use of the 
special tool: 
MB991658.

• Ignition switch: 

"ON"

Fully close the throttle valve 
with your finger

4.0 V or more

Fully open the throttle valve 
with your finger

1.0 V or less

12

Power supply 
voltage applied to 
throttle position 
sensor

Ignition switch: "ON"

4.9 − 5.1 V

14

Intake camshaft 
position sensor

Engine: cranking

2.0 − 4.8 V*

1

Engine: idling

2.0 − 3.0 V*

1

15

Throttle actuator 
control motor (+)

• Ignition switch: "ON"
• Accelerator pedal: fully opened → fully closed

Decreases slightly 
(Approximately 2 
V) from battery 
voltage.

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-844

16

Throttle actuator 
control motor (−)

• Ignition switch: "ON"
• Accelerator pedal: fully closed → fully opened

Decreases slightly 
(Approximately 2 
V) from battery 
voltage.

17

Exhaust engine oil 
control valve

Ignition switch: "ON"

B+

Engine: Warming up, under the high load 
operation.

4.0 − 10 V*

1

26

Engine coolant 
temperature sensor

Ignition switch: 
"ON"

When engine coolant 
temperature is −20° C (−4° F)

3.9 − 4.5 V

When engine coolant 
temperature is 0° C (32° F)

3.2 − 3.8 V

When engine coolant 
temperature is 20° C (68° F)

2.3 − 2.9 V

When engine coolant 
temperature is 40° C (104° F)

1.3 − 1.9 V

When engine coolant 
temperature is 60° C (140° F)

0.7 − 1.3 V

When engine coolant 
temperature is 80° C (176° F)

0.3 − 0.9 V

34

Heated oxygen 
sensor (front) 
heater

Engine: warming up, idling (20 seconds after 
starting engine)

9 − 11 V*

1

Engine: revving

9 − 11 V*

1

 → B+ 

(momentarily)

35

Heated oxygen 
sensor (rear) heater

Engine warming up, idling (20 seconds after 
starting engine)

9 − 11 V*

1

Engine: revving

9 − 11 V*

1

 → B+ 

(momentarily)

36

Engine oil pressure 
switch

Ignition switch: "ON"

1 V or less

Engine: idling

B+

37

Evaporative 
emission purge 
solenoid 

Ignition switch: "ON"

B+

Engine: warming up, 3,000 r/min (with 3 minutes 
after the engine starting sequence is completed)

Voltage drops

38

Heated oxygen 
sensor (front)

Engine: warming up, 2,500 r/min

0.5 ⇔ 1.4 V 

(changes 
repeatedly)

39

Heated oxygen 
sensor (front) offset 
voltage

Ignition switch: "ON"

0.4 − 0.6 V

40

Heated oxygen 
sensor (rear)

• Transaxlle: 2nd
• Drive with wide open throttle
• Engine: 3,500 r/min or more

1.0 − 1.5 V

41

Heated oxygen 
sensor (rear) offset 
voltage

Ignition switch: "ON"

0.4 − 0.6 V

TERMINAL 
NO.

INSPECTION ITEM INSPECTION CONDITION (ENGINE 

CONDITION)

NORMAL 
CONDITION

 

 

 

 

 

 

 

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