Mitsubishi Outlander XL. Manual - part 221

STEP 5. 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  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0031 set?

YES:

 Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8. Then go to Step 6.

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 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.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0043 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-79

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0044: Heated Oxygen Sensor Heater Control Circuit High (bank 1, sensor 3)
<California>

M11310100362USA0000010000

ZK602830

1

3

2

4

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

2

8

7

6

5

4

3

11

21

20

19

18

17

16

15

14

13

12

9

22

1

10

1 2

3 4

WHITE

WHITE

RELAY BOX
(ENGINE COMPARTMENT)

HC TRAP CATALYST HEATED OXYGEN SENSOR HEATER CIRCUIT

36

FUSIBLE LINK

AA00

WHITE

BR

O

WN

BR

O

WN

HC TRAP CATALYST HEATED
OXYGEN SENSOR

ENGINE
CONTROL
MODULE

118

D-30

16

1

TO ECM TO ECM

20A

WHITE

A-33X

MFI
RELAY

4

3

1

2

20

TO ECM

B-11

OFF

ON

C-129

1

4

2

3

13Ab-80

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603589

MFI relay

A-33X

Connector: A-33X

AA00

ZK603592

ECM

B-11 (GR)

Connector: B-11

AA00

ZK600417 AA00

Center exhaust pipe
heated oxygen sensor

Connector: D-30

D-30 (B)

Rear heater duct

ZK603651AA00

C-129

Connector: C-129

 

CIRCUIT OPERATION

｠

Power is supplied from the MFI relay (terminal No.
4) to the heated oxygen sensor heater.

｠

The ECM (terminal No. 118) controls continuity to
the  center  exhaust  pipe  heated  oxygen  sensor
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
energized.

DESCRIPTIONS OF MONITOR METHODS

Center exhaust pipe heated oxygen sensor heater
current or voltage is out of specified range.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-81

DIAGNOSTIC TROUBLE CODE PROCEDURES

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

DTC SET CONDITION

Logic Flow Chart

Start

End

Yes

Yes

Yes

No

No

No

Malfunction

Good

Continuous

failure for 2secs

Monitoring

conditions

Current < 0.17A

or

Current > 10.5A

Voltage < 2.0V

ZK603657 AA00

Heater ON

Yes

Yes

No

Check Conditions

｠

More than 2 seconds have passed since the engine
starting sequence was completed.

｠

While  the  center  exhaust  pipe  heated  oxygen
sensor (front) heater is on.

｠

Battery  positive  voltage  is  between  11  and  16.5
volts.

13Ab-82

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES