Mitsubishi Outlander GS45X. Manual - part 725

 

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Mitsubishi Outlander GS45X. Manual - part 725

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-723

DIAGNOSIS

STEP 1. Check the trouble symptoms.
(1) Turn the ignition switch to the "ON" position.

• The malfunction indicator lamp (SERVICE ENGINE 

SOON or Check Engine Lamp) should illuminate imme-
diately after the ignition switch is turned to the "ON" 
position.

(2) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the malfunction indicator lamp (SERVICE ENGINE 

SOON or Check Engine Lamp) illuminate?
YES : 
It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunctions 

P.00-15

.

NO :  Replace the combination meter.

Inspection procedure 3: The malfunction indicator lamp (SERVICE ENGINE SOON or check engine 
lamp) remains illuminated and never goes out

.

COMMENT

• In cases such as the above, the cause is proba-

bly that the ECM is detecting a problem in a sen-
sor or actuator, or that one of the malfunctions 
listed below has probably occurred.

.

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

• Shorted malfunction indicator lamp (SERVICE 

ENGINE SOON or Check Engine Lamp) circuit.

DIAGNOSIS

Required Special Tools:

• 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) <2.4L ENGINE>

13A-724

STEP 1. 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 to the "LOCK" (OFF) position.
Q: Is any DTC set?

YES : Refer to Diagnostic Trouble Code Chart 

P.13A-49

.

NO :  Go to Step 2.

STEP 2. Check the trouble symptoms.
(1) Turn the ignition switch to the "ON" position.

• The malfunction indicator lamp (SERVICE ENGINE 

SOON or Check Engine Lamp) should go out when 20 
seconds have passed after the ignition switch was 
turned to the "ON" position.

(2) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the malfunction indicator lamp (SERVICE ENGINE 

SOON or Check Engine Lamp) go out?
YES : 
It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− How to 

Cope with Intermittent Malfunctions 

P.00-15

.

NO :  Replace the combination meter.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-725

Inspection procedure 4: Cranks, won’t start

.

Cranks, Won't Start Circuit

• Refer to Ignition circuit 

P.13A-807

.

.

CIRCUIT OPERATION

• Refer to Ignition circuit 

P.13A-807

.

.

COMMENT

• In cases such as the above, the cause is proba-

bly no spark, fuel delivery, or fuel quality prob-
lems. In addition, foreign materials (water, 
kerosene, etc.) may be mixed with the fuel.

.

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

• Malfunction of the battery.

• Malfunction of the immobilizer system.

• Malfunction of the fuel pump system.

• Malfunction of the ignition system.

• Malfunction of the injector system. 

• Poor compression

• Contaminated fuel.

• Timing chain in out of place.

• 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

STEP 1. 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 after cranking 

the engine for at least 2 sec.

(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC set?

YES : Refer to Diagnostic Trouble Code Chart 

P.13A-49

.

NO :  Go to Step 2.

AK700568AB

MB991824

MB991827

MB991910

Data link
connector

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-726

STEP 2. Check harness connector B-101, B-120, B-103, 
B-116 at injector 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 injector.
(1) Disconnect the injector connector B-101, B-120, B-103, 

B-116.

(2) Measure the resistance between injector side connector 

terminal No. 1 and No. 2.

Standard value: 10.5 

 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 4.
NO :  Replace the faulty injector. Then confirm that the 

malfunction symptom is eliminated.

STEP 4. Measure the power supply voltage at injector 
connector.
(1) Disconnect connector B-101, B-120, B-103, B-116 and 

measure at the harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 1 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 14.
NO :  Go to Step 5.

STEP 5. Check harness connector A-24X at injector relay 
for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 6.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK604038

1 2

AB

Injector side
connector

AK604191

M

1

2

AC

B-101, B-102, B-103, B-116
harness connector:
component side 

 

 

 

 

 

 

 

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