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 −
.
.
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
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