Mitsubishi Outlander GS45X. Manual - part 970

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-813

STEP 5. Check the fuel pump operation.
(1) Disconnect fuel pump connector D-20.
(2) Use jumper wires to connect fuel pump connector terminal 

No. 5 to the positive battery terminal and terminal No. 4 to 
the negative battery terminal.

• An operating sound of the fuel pump should be heard.

Q: Is the fuel pump operating properly?

YES : Go to Step 6.
NO :  Replace the fuel pump. Then confirm that the 

malfunction symptom is eliminated.

STEP 6. Check for continuity at fuel pump harness side 
connector D-20.
(1) Disconnect the connector D-20 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 4 and 

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 7.
NO :  Repair harness wire between fuel pump connector 

D-20 (terminal No. 4) and ground because of open 
circuit or harness damage. Then confirm that the 
malfunction symptom is eliminated.

AK700217

1 2 3

4 5

AB

Fuel pump side
connector

AK700218

1

2

3

4

5

AB

D-20 harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-814

STEP 7. Check for open circuit and short circuit to ground 
and harness damage between ETACS-ECU connector 
C-314 (terminal No. 1) and fuel pump connector D-20 
(terminal No. 5).
(1) Disconnect the connector C-314 and D-20 measure at the 

harness side.

(2) Measure the resistance between connector C-314 (terminal 

No. 1) and connector D-20 (terminal No. 5).

• Should be less than 2 ohms.

(3) Check for the continuity between connector D-20 (terminal 

No. 5) and ground.

• Not continuity.

Q: Is the harness wire in good condition?

YES : Go to Step 8.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

STEP 8. Check connector B-11 at ECM for damage.
Q: Is the connector in good condition?

YES : Go to Step 9.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK700219

1

2

3

4

5

1

2

AB

C-314 harness
connector:
component side 

D-20 harness connector:
component side 

AK700220

1

2

3

4

5

AB

D-20 harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-815

STEP 9. Measure the power supply voltage at ECM 
connector B-11.
(1) Disconnect the connector B-11 and measure at the harness 

side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 96 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Codes Registration Judgment Table <Vehicles 

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

.

NO :  Repair harness wire between ETACS-ECU connector 

C-304 (terminal No. 11) and ECM connector B-11 
(terminal No. 96) because of open circuit. Then 
confirm that the malfunction symptom is eliminated.

AK700221

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108

107

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115 116

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105

118

117

82 81 80 79 78 77 76 75 74 73 72 71

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100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

AB

B-11 harness
connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-816

INSPECTION PROCEDURE 23: Ignition Switch-ST System and Transmission Range Switch System

M

1

1

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4

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8

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AK900385

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D

Ds

N

R

P

OFF

ON

1

OFF

ON

10

106

6

B-11

105

15

7

C-304

ENGINE
CONTROL
MODULE

A-13

B-10

ETACS-ECU

7

IG2

ST

LOCK

ACC

IG1

5

B-114 

(MU801211)

B-110

MU802355

STARTER

STARTER
RELAY

TRANSMISSION
RANGE
SWITCH

B-113

A-27X

6

3

1

4

2

BLA

CK-RED

RED-WHITE

RED-WHITE

WHITE

GREEN

GREEN

ORANGE

LIGHT

GREEN

12

11

C-315 

MU801890

C-210

IGNITION SWITCH

STARTING SYSTEM CIRCUIT

AB

BATTERY

FUSIBLE LINK 24

1

BLA

CK

BLA

CK

BLA

CK

BLA

CK-RED

BLUE-BLA

CK

BLUE-BLA

CK

BLA

CK-RED