Mitsubishi Outlander GS45X. Manual - part 747

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-811

STEP 8. Check for harness damage between MFI relay 
connector A-33X (terminal No. 2) and ignition coil 
connector B-01, B-19, B-04 and B-18 (terminal No. 3)
NOTE: Check harness after checking intermediate connector 
A-13. If intermediate connector is damaged, repair or replace it. 
After to GROUP 00E, Harness Connector Inspection 

P.00E-2

. 

Then check that the malfunction is eliminated.
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

STEP 9. Check for harness damage between ignition coil 
connector and ECM connector.

a. Check the harness wire between ignition coil connector 

B-01 (terminal No. 2) and ECM connector B-10 (terminal 
No. 151) at ignition coil 1.

b. Check the harness wire between ignition coil connector 

B-19 (terminal No. 2) and ECM connector B-10 (terminal 
No. 143) at ignition coil 2.

c. Check the harness wire between ignition coil connector 

B-04 (terminal No. 2) and ECM connector B-10 (terminal 
No. 150) at ignition coil 3.

d. Check the harness wire between ignition coil connector 

B-18 (terminal No. 2) and ECM connector B-10 (terminal 
No. 148) at ignition coil 4.

Q: Is the harness wire in good condition?

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

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

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then confirm that the malfunction 

symptom is eliminated.

NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-812

Inspection procedure 26: A/C system

AK900376

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95 96 97 98 99

100 101 102 103 104

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109

108

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105

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117

1

2

3
4

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

 

1

WHITE

WHITE

7

10A

ORANGE

A/C COMPRESSOR
CLUTCH RELAY

4

2

1

A-16X

B-17

MU802655

A-13

OFF

A/C
REFRIGERANT
TEMPERATURE
SWITCH 

A/C COMPRESSOR CLUTCH ASSEMBLY

A/C
COMPRESSOR
CLUTCH

A/C COMPRESSOR CLUTCH RELAY CIRCUIT

102

AC

B-11

LIGHT GREEN

LIGHT GREEN

3

1

5

OFF

ON

ON

FUSIBLE LINK  36

ON

→

OFF

: 155˚C
OFF

→

ON

: 125˚C

RELAY BOX
(ENGINE COMPARTMENT)

ENGINE CONTROL MODULE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-813

.

CIRCUIT OPERATION

• When the A/C switch ON signal is input into the 

ECM, the ECM turns ON the A/C compressor 
relay. This causes battery positive voltage to be 
supplied to the A/C compressor and the magnet 
clutch actuates.

.

COMMENT

• When the A/C is "ON" the ECM turns "ON" the 

power transistor in the ECM. The ECM delays 
A/C engagement momentarily while it increases 
idle speed. Then the A/C compressor clutch relay 
coil will be energized. 

With this, the A/C compressor clutch relay turns 
"ON", and the A/C compressor clutch operates.

.

TROUBLESHOOTING HINTS (The most 
likely causes for this case: )

• Malfunction of the A/C control system.

• Open or shorted A/C compressor relay circuit, 

harness damage, or connector damage.

• Malfunction of the ECM.

DIAGNOSIS

STEP 1. Check harness connector B-11 at ECM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 2.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK704087AB

Connector: A-13

A-13

AK704326

AB

A/C compressor relay

Connector: A-16X

A-16X

AK704097AB

Connector: B-11

B-11 (GR)

AK704327

AB

Connector: B-17

B-17 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-814

STEP 2. Check the circuit at ECM connector B-11.
(1) Disconnect the connectors B-11 and measure at the 

harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 102 and ground.

• Voltage should be battery positive voltage.

(4) Using a jumper wire, connect terminal No. 102 to ground.

• A/C compressor clutch relay should turn "ON".

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage and A/C compressor relay condition 

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

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

with KOS> 

P.42B-15

 or GROUP 42C, Diagnosis 

− ID 

Codes Registration Judgment Table <Vehicles with 
WCM> 

P.42C-10

. Then confirm that the malfunction 

symptom is eliminated.

NO  :  Refer to GROUP 55A, Manual A/C Diagnosis 

− 

Introduction To Heater, Air Conditioning And 
Ventilation Diagnosis 

P.55A-6

 <Manual A/C>, 55B, 

Automatic A/C Diagnosis 

− Introduction To Heater, Air 

Conditioning And Ventilation Diagnosis 

P.55B-3

 

<Automatic A/C>. Then confirm that the malfunction 
symptom is eliminated.

Inspection procedure 27: Engine oil pressure switch system

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99 98 97 96 95

100

101

102

103

104

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106

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114

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111

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118

AK700226AB

B-11 harness
connector:
component side 

AK604021

1

2

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

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

1

2

1

3

36

GRA

Y

GRA

Y

ENGINE OIL
PRESSURE
SWITCH

B-16

1

ENGINE OIL PRESSURE SWITCH CIRCUIT

AC

B-10

OFF

ON

3

B-24

MU802603

ENGINE
CONTROL
MODULE