Mitsubishi Outlander GS45X. Manual - part 788

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-85

DESCRIPTIONS OF MONITOR METHODS

Compare engine oil pressure switch status with 

engine operating condition.

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS 
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Camshaft position sensor

• Mass airflow sensor

• Engine coolant temperature sensor

• Throttle position sensor

• Injection valve

.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-86

DTC SET CONDITIONS

Logic Flow Chart

.

Check Conditions 

• Engine speed is less than 3,813 r/min.

• Engine coolant temperature is 77°C (171 °F) or 

more.

• Battery positive voltage is between 10 and 16.5 

volts.

• 30 seconds or more have passed since the 

engine starting sequence was completed.

Judgment Criterion

• Engine oil pressure switch (for MIVEC) has been 

OFF for 5 seconds.

Check Conditions

• Engine speed is more than 5,094 r/min.

• Engine coolant temperature is 77°C (171 °F) or 

more.

• Battery positive voltage is between 10 and 16.5 

volts.

• 30 seconds or more have passed since the 

engine starting sequence was completed.

Malfunction

Yes

No

Yes

No

Yes

No

No

Good

AK900610

Monitoring
Conditions

Engine speed

< 3,813rpm

Oil pressure SW

: ON

Yes

Yes

No

No

Yes

Start

End

Engine speed

> 5,094rpm

Oil pressure SW

: OFF

Continuous

failure for 5sec

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-87

Judgment Criterion

• Engine oil pressure switch (for MIVEC) has been 

ON for 5 seconds.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 19 

P.13B-11

.

.

 TROUBLESHOOTING HINTS (The most 
likely causes for this code to be set are:) 

• Connector damage.

• Harness damage.

• Engine oil pressure switch failed.

• Engine oil control valve failed.

• ECM failed.

DIAGNOSIS

Required Special Tools:

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

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

• MB992110: Power Plant ECU Check Harness

STEP 1. Check harness connector B-107 at engine oil 
pressure switch and harness connector B-10 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 go to Step 8.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-88

STEP 2. Measure the power supply voltage at ECM 
connector B-10 by using power plant ECU check harness 
special tool MB992110.
(1) Disconnect all ECM connectors. Connect the power plant 

ECU check harness special tool MB992110 between the 
separated connectors.

(2) Start the engine and run at idle.

(3) Measure the voltage between terminal No. 7 and ground.

• Voltage should be 1 volt or less when engine is idling.

• Voltage should be battery positive voltage when engine 

speed is higher than 5,200 r/min.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage normal?

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 :  Go to Step 3.

STEP 3. Measure the power supply voltage at engine oil 
pressure switch connector B-107.
(1) Disconnect the connector B-107 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 5.
NO :  Go to Step 4.

AK700249

ECM

AB

Body side harness 

MB992110

AK703893

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

AB

Special tool 64-pin 
connector:
component side 

AK700271

1

B-107 harness
connector:
component side 

AB