Mitsubishi Outlander GS45X. Manual - part 973

 

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Mitsubishi Outlander GS45X. Manual - part 973

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-825

DIAGNOSIS

STEP 1. Check the ignition coil.
(1) Remove the intake manifold.
(2) Refer to GROUP 16, Ignition System 

− On-vehicle Service 

− Ignition Coil Check 

P.16-44

.

Q: Are there any abnormalities?

YES : Replace the ignition coil. Then confirm that the 

malfunction symptom is eliminated. 

NO :  Go to Step 2.

STEP 2. Check harness connectors harness connector 
B-10 at ECM and harness connector A-33X at MFI relay and 
B-01, B-04, B-05, B-15, B-18, B-19 at ignition coil for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 3. Check the continuity at ignition coil connectors 
B-01, B-04, B-05, B-15, B-18, B-19.
(1) Disconnect the connector B-01, B-04, B-05, B-15, B-18 and 

B-19 measure at the harness side.

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

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES : Go to Step 4.
NO :  Check the connector B-21 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 coil 
connector ignition coil connectors B-01, B-04, B-05, 
B-15, B-18 and B-19 (terminal No. 2) and ground 
because of open circuit or harness damage. Then 
confirm that the malfunction symptom is eliminated.

AK700222

1

2

3

AB

B-01, B-04, B-05,
B-15, B-18, B-19
harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-826

STEP 4. Check for open circuit and harness damage 
between MFI relay connector and ignition coil connector.
NOTE: Check harness after checking intermediate connectors 
A-13 and B-21. If intermediate connectors are damaged, repair 
or replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion 

P.00E-2

. Then confirm that the malfunction symptom is 

eliminated.
(1) Disconnect the MFI relay connector and ignition coil 

connector.

(2) Measure the resistance between MFI relay connector and 

ignition coil connector.

a. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-01 (terminal No. 3) at ignition coil 1.

b. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-19 (terminal No. 3) at ignition coil 2.

c. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-04 (terminal No. 3) at ignition coil 3.

d. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-18 (terminal No. 3) at ignition coil 4.

e. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-05 (terminal No. 3) at ignition coil 5.

f. MFI relay connector A-33X (terminal No. 2) and ignition 

coil connector B-15 (terminal No. 3) at ignition coil 6.

• Should be less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 5.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

AK704119

1

2

3

3

1

2

4

AB

A-33X harness
connector:
component side

B-01, B-04, B-05,
B-15, B-18, B-19
harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-827

STEP 5. Check for open circuit and harness damage 
between ignition coil connector and ECM connector.
NOTE: Check harness after checking intermediate connector 
B-21. If intermediate connector is damaged, repair or replace it. 
Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

Then confirm that the malfunction symptom is eliminated.
(1) Disconnect the ignition coil connector and ECM connector.
(2) Measure the resistance between ignition coil connector and 

ECM connector.

a. Ignition coil connector B-01 (terminal No. 2) and ECM 

connector B-10 (terminal No. 4) at ignition coil 1.

b. Ignition coil connector B-19 (terminal No. 2) and ECM 

connector B-10 (terminal No. 5) at ignition coil 2.

c. Ignition coil connector B-04 (terminal No. 2) and ECM 

connector B-10 (terminal No. 20) at ignition coil 3.

d. Ignition coil connector B-18 (terminal No. 2) and ECM 

connector B-10 (terminal No. 21) at ignition coil 4.

e. Ignition coil connector B-05 (terminal No. 2) and ECM 

connector B-10 (terminal No. 52) at ignition coil 5.

f. Ignition coil connector B-15 (terminal No. 2) and ECM 

connector B-10 (terminal No. 53) at ignition coil 6.

• Should be less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 6.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

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AK700224

1

2

3

AB

B-10 harness
connector:
component side

B-01, B-04, B-05,
B-15, B-18, B-19
harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-828

STEP 6. Check for short circuit to ground between ignition 
coil connector and ECM connector.
NOTE: Check harness after checking intermediate connectors 
A-13 and B-21. If intermediate connectors are damaged, repair 
or replace it.
Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

Then confirm that the malfunction symptom is eliminated.
(1) Disconnect the ignition coil connector and ECM connector.
(2) Check for the continuity between ignition coil connector and 

ground.

a. Ignition coil connector B-01 (terminal No. 1) and ground 

at ignition coil 1.

b. Ignition coil connector B-19 (terminal No. 1) and ground 

at ignition coil 2.

c. Ignition coil connector B-04 (terminal No. 1) and ground 

at ignition coil 3.

d. Ignition coil connector B-18 (terminal No. 1) and ground 

at ignition coil 4.

e. Ignition coil connector B-05 (terminal No. 1) and ground 

at ignition coil 5.

f. Ignition coil connector B-15 (terminal No. 1) and ground 

at ignition coil 6.

• Not continuity.

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 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 it. Then confirm that the malfunction symptom 

is eliminated.

AK700225

1

2

3

AB

B-01, B-04, B-05,
B-15, B-18, B-19
harness connector:
component side 

 

 

 

 

 

 

 

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