Mitsubishi Outlander GS45X. Manual - part 784

 

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Mitsubishi Outlander GS45X. Manual - part 784

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-69

STEP 6. 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 

P.13B-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0031 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-70

DTC P0032: Heated Oxygen Sensor Heater Circuit High (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-71

.

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 or voltage 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-72

DTC SET CONDITION

Logic Flow Chart

.

Check Conditions

• More than 2 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.

Judgement Criterion

• The right bank heated oxygen sensor (front) 

heater current has continued to be higher than 
10.5 ampere for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 2 

P.13B-11

.

.

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

• Right bank heated oxygen sensor (front) heater.

• ECM failed.

End

No

No

Malfunction

Good

Current < 0.17A

or

Current > 10.5A

Voltage < 2.0V

AK900352

Heater activation 
command ON

No

No

Start

Yes

Yes

Yes

Yes

Yes

No

Continuous
failure for 2secs

Monitoring
conditions

 

 

 

 

 

 

 

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