Mitsubishi Outlander GS45X. Manual — part 792
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-101
DIAGNOSIS
Required Special Tool:
• MD998464: Test Harness
STEP 1. Check the left bank heated oxygen sensor (front).
(1) Disconnect left bank heated oxygen sensor (front)
connector B-14 and connect test harness special tool,
MD998464, to the connector on the left bank heated oxygen
(front) sensor side.
(2) Measure the resistance between heated oxygen sensor
connector terminal No. 1 (red clip) and terminal No. 3 (blue
clip).
Standard value: 4.5
− 8.0 Ω [at 20°C (68°F)]
Q: Is the measured resistance between 4.5 and 8.0 ohms
[at 20
°C (68°F)]?
YES : Go to Step 2.
NO : Replace the left bank heated oxygen sensor (front).
Then go to Step 3.
STEP 2. Check the trouble symptoms.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 2
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0052 set?
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
. Then go to Step 3.
NO : 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
.
STEP 3. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 2
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0052 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK700179
MD998464
Red
Blue
AB
Heated
oxygent
sensor
component
side
connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-102
DTC P0053: Heated Oxygen Sensor Heater Resistance (bank 1, sensor 1)
AK700128
1
3
2
4
2
1
4
3
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
1
10 111213 14 1516 17 1819 20
2 3 4
5 6 7 8 9
20A
WHITE
GRA
Y
WHITE
WHITE
WHITE
A-33X
MFI
RELAY
RELAY BOX
(ENGINE COMPARTMENT)
4
3
1
2
22
TO ECM
36
FUSIBLE LINK
AB
1
2
3
4
TO ECM TO ECM
ENGINE
CONTROL
MODULE
33
4
B-03
MU802665
B-10
A-13
OFF
ON
RIGHT BANK HEATED OXYGEN SENSOR (FRONT) HEATER CIRCUIT
RIGHT BANK HEATED
OXYGEN SENSOR (FRONT)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-103
.
CIRCUIT OPERATION
• Power is supplied from the MFI relay (terminal
No. 2) to the right bank heated oxygen sensor
(front) heater.
• The ECM (terminal No. 33) controls continuity to
the right bank heated oxygen sensor (front)
heater by turning the power transistor in the ECM
"ON" and "OFF".
.
TECHNICAL DESCRIPTION
• The ECM checks whether the heater current is
within a specified range when the heater is ener-
gized.
.
DESCRIPTIONS OF MONITOR METHODS
Right bank heated oxygen sensor heater (front) cur-
rent is out of specified range.
.
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)
• Not applicable
.
AK700399AB
MFI relay
A-33X
Connector: A-33X
AK700401AB
ECM
B-10 (GR)
Connector: B-10
AK900129 AD
Right bank heated
oxygen sensor (front)
Front exhaust
pipe RH
B-03 (GR)
Connector: B-03
AK900602
Connector: A-13
A-13
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-104
DTC SET CONDITION
Logic Flow Chart
.
Check Conditions
• More than 60 seconds have passed since the
engine starting sequence was completed.
• While the right bank heated oxygen sensor (front)
heater is on.
• Battery positive voltage is between 11 and 16.5
volts.
• Intake air temperature is more than −10°C (14°F).
• On duty cycle of the right bank heated oxygen
sensor (front) heater is between 3 and 97 per-
cent.
Judgement Criterion
• The right bank heated oxygen sensor (front)
heater current has continued to be lower than
average 0.6 ampere for 10 seconds.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle −
Pattern 2
.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are: )
• Connector damage.
• Right bank heated oxygen sensor (front) heater
failed.
• Harness damage
• ECM failed.
End
No
No
No
Malfunction
Good
Heater current
< 0.6 A
AKA00341
Start
Yes
Yes
Yes
Continuous
failure for 10secs
Monitoring
conditions
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст