Mitsubishi Outlander GS45X. Manual - part 958

 

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Mitsubishi Outlander GS45X. Manual - part 958

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-765

STEP 7. Check the right bank injector resistance at 
intermediate connector B-21.
(1) Disconnect the intermediate connector B-21.
(2) Measure the resistance between each male connector side 

terminal.

a. Measure the resistance between terminal No. 6 and No. 

7 at No. 1 cylinder injector.

b. Measure the resistance between terminal No. 6 and No. 

8 at No. 3 cylinder injector.

c. Measure the resistance between terminal No. 6 and No. 

9 at No. 5 cylinder injector.

• Resistance should be between 10.5 and 13.5 ohms [at 

20

°C (68°F)].

Q: Is the measured resistance between 10.5 and 13.5 ohms 

[at 20

°C (68°F)]?

YES : Go to Step 10.
NO :  Go to Step 8.

STEP 8. Check the right bank injector resistance.
(1) Remove the intake manifold.
(2) Disconnect the right bank injector connector, which 

deviates from the standard value at Step 7.

(3) Measure the resistance between injector side connector 

terminal No. 1 and No. 2.

Standard value: 10.5 

− 13.5 Ω [at 20°C (68°F)]

Q: Is the measured resistance between 10.5 and 13.5 ohms 

[at 20

°C (68°F)]?

YES : Go to Step 9.
NO :  Replace the injector. Then confirm that the 

malfunction symptom is eliminated.

STEP 9. Check harness connector B-101, B-103, B-104 at 
right bank injector for damage.
(1)  Check the injector connector, which deviates from the 

standard value at Step 7.

Q: Is the harness connector in good condition?

YES : Repair harness wire between injector intermediate 

connector and right bank injector connector because 
of harness damage. Then confirm that the 
malfunction symptom is eliminated.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK700205

1

2 3

6

7 8

4 5

9 10

AB

B-21
Injector side
connector

AK700204

1 2

AB

Injector side
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-766

STEP 10. Check harness connector B-21 at intermediate 
connector for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 11.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 11. Check harness connector B-115, B-116, B-120 at 
left bank injector for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 12.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

.Then confirm that the 

malfunction symptom is eliminated.

STEP 12. Check for harness damage between injector 
connector and ECM connector.
(1) Disconnect the injector connector and ECM connector.
(2) Measure the resistance between injector connector and 

ECM connector.

a. Injector connector B-101 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 2) at No. 1 cylinder injector.

b. Injector connector B-120 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 3) at No. 2 cylinder injector.

c. Injector connector B-103 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 18) at No. 3 cylinder injector.

d. Injector connector B-116 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 19) at No. 4 cylinder injector.

e. Injector connector B-104 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 50) at No. 5 cylinder injector.

f. Injector connector B-115 (terminal No. 2) and ECM con-

nector B-10 (terminal No. 51) at No. 6 cylinder injector.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 13.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

STEP 13. Check the ignition timing.
(1) Check the ignition timing at cranking.

Standard value: 5

° BTDC ± 3°

Q: Is the ignition timing normal?

YES : Go to Step 14.
NO :  Check for installed conditions of the timing belt. Then 

confirm that the malfunction symptom is eliminated.

AK700206

M

1

2

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-101, B-103, B-104,
B-115, B-116,B-120
harness connector:
component side 

AB

B-10 harness
connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-767

STEP 14. Check the spark plugs.
Refer to GROUP 16, Ignition System 

− On-vehicle Service − 

Spark Plug Check And Cleaning 

P.16-45

.

Q: Are there any abnormalities?

YES : Replace the spark plug. Then confirm that the 

malfunction symptom is eliminated.

NO :  Go to Step 15.

STEP 15. 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 16.

STEP 16. Check the compression pressure.
Refer to GROUP 11C, On-vehicle Service 

− Compression 

Pressure Check 

P.11C-18

.

Q: Is the compression pressure normal?

YES : Check the following items, and repair or replace the 

defective items.

a. Check fuel lines for clogging.
b. Check if fuel is contaminated.

c. Check if the injectors are clogged.

Then confirm that the malfunction symptom is 

eliminated.

NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

INSPECTION PROCEDURE 6: Hard Starting

.

COMMENT

• In cases such as the above, the cause is usually 

either weak spark, improper air-fuel mixture or 
low compression.

.

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

• Malfunction of the fuel pump system.

• Malfunction of the ignition system.

• Malfunction of the injector system.

• Poor compression

• Malfunction of the EGR system

• Contaminated fuel.

• Malfunction of the ECM.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-768

STEP 1. Check if the EGR valve sounds during 
initialization.
Q: Is the initialization sound heard in the EGR valve?

YES : Go to Step 2.
NO :  Refer to GROUP 17, Emission Control 

− Exhaust Gas 

Recirculation (EGR) System 

− EGR Valve (Stepper 

Motor) Check 

P.17-81

.

STEP 2. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch the "LOCK" (OFF) position.
Q: Is any DTC set?

YES : Refer to Diagnostic Trouble Code Chart 

P.13B-50

.

NO :  Go to Step 3.

STEP 3. Using scan tool MB991958, check data list.
(1) Turn the ignition switch the "ON" position.
(2) Check the following items in the data list. Refer to Data List 

Reference Table 

P.13B-836

.

a. Item 1: Power Supply Voltage (at Cranking)
b. Item 6: Engine Coolant Temperature Sensor.

(3) Turn the ignition switch the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : Go to Step 4.
NO :  Repair or Replace. Then confirm that the malfunction 

symptom is eliminated.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

 

 

 

 

 

 

 

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