Mitsubishi Eclipse. Manual - part 344

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-869

DIAGNOSIS

STEP 1. Check connector A-13X at starter relay for 
damage.
Q: Is the 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.

STEP 2. Check the starter relay.
Refer to GROUP 16, Starting system 

− On-vehicle Service − 

Starter relay check 

P.16-25

.

Q: Are there any abnormalities?

YES : Go to Step 3.
NO :  Repair or replace it. Then confirm that the malfunction 

symptom is eliminated.

STEP 3. Measure the power supply voltage at starter relay 
connector A-13X.
(1) Disconnect the connector A-13X and measure at the 

harness side.

(2) Turn the ignition switch to the "START" position.

(3) Measure the voltage between terminal No. 3, No. 5 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 : Go to Step 4.
NO :  Check connector C-28 at intermediate connector for 

damage, and repair or replace as required. Refer to 
GROUP 00E, Harness Connector Inspection 

P.00E-2

. If intermediate connector is in good 

condition, repair harness wire between ignition switch 
connector C-87 (terminal No. 5) and starter relay 
connector A-13X (terminal No. 3, No. 5) because of 
open circuit. Then confirm that the malfunction 
symptom is eliminated.

AK300455

1

2

3

4
5

CONNECTOR: A-13X

AB

A-13X

HARNESS CONNECTOR:
COMPONENT SIDE

AK300455

1

2

3

4
5

CONNECTOR: A-13X

AB

A-13X

HARNESS CONNECTOR:
COMPONENT SIDE

AK101400

3

4
5

1

2

AD

A-13X HARNESS 
CONNECTOR: 
COMPONENT SIDE

3

4
5

1

2

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-870

STEP 4. Check connector C-60 at ECM for damage.
Q: Is the connector in good condition?

YES : Go to Step 5.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 5. Measure the power supply voltage at ECM 
connector C-60.
(1) Disconnect the connector C-60 and measure at the harness 

side.

(2) Turn the ignition switch to the "START" position.

(3) Measure the voltage between terminal No. 71 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 : Go to Step 6.
NO :  Repair harness wire between starter relay connector 

A-13X (terminal No. 2) and ECM connector C-60 
(terminal No. 71) because of open circuit. Then 
confirm that the malfunction symptom is eliminated.

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000410 AJ

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

C-60 HARNESS 
CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-871

STEP 6. Check connector C-02 at interlock switch for 
damage.
Q: Is the connector in good condition?

YES : Go to Step 7.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 7. Check the interlock switch.
Refer to GROUP 21A, On-vehicle Service 

− Interlock switch 

check and adjustment 

P.21A-9

.

Q: Are there any abnormalities?

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

symptom is eliminated.

STEP 8. Measure the power supply voltage at interlock 
switch connector C-02.
(1) Disconnect the connector C-02 and measure at the harness 

side.

(2) Turn the ignition switch to the "START" position.

(3) Measure the voltage between terminal No. 2 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 : Go to Step 9.
NO :  Check connector C-07 at intermediate connector for 

damage, and repair or replace as required. Refer to 
GROUP 00E, Harness Connector Inspection 

P.00E-2

. If intermediate connectors is in good 

condition, repair harness wire between starter relay 
connector A-13X (terminal No. 1) and interlock switch 
connector C-02 (terminal No. 2) because of open 
circuit. Then confirm that the malfunction symptom is 
eliminated.

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK000384AG

C-02 HARNESS 
CONNECTOR: 
COMPONENT SIDE

2 1

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-872

STEP 9. Check the continuity at interlock switch harness 
side connector C-02.
(1) Disconnect the connector C-02 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 1 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Replace the ECM. Then confirm that the malfunction 

symptom is eliminated.

NO :  Repair harness wire between interlock switch 

connector C-02 (terminal No. 1) and ground because 
of open circuit or harness damage. Then confirm that 
the malfunction symptom is eliminated.

AK300744

1

2

CONNECTOR: C-02

AB

C-02

HARNESS CONNECTOR:
COMPONENT SIDE

AK000385

AG

C-02 HARNESS 
CONNECTOR: 
COMPONENT SIDE

2 1