Mitsubishi Outlander XL. Manual - part 218

B-02 harness
connector:
component side 

1

2

3

4

ZK603155AA00

(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 4.

NO:

 Repair harness wire between the MFI relay connector

A-33X (terminal No. 2) and the right bank heated oxygen
sensor (rear) connector B-02 (terminal No. 1) because of
open circuit or harness damage. Then go to step 6.

STEP 4.Check for open circuit to ground or harness damage
between right bank heated oxygen sensor (rear) connector
B-02 and ECM connector B-10.

(1)

Disconnect  the  right  bank  heated  oxygen  sensor  (rear)
connector B-02 and the ECM connector B-10.

ZK603156

1

2

3

4

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

B-02 harness connector:
component side 

B-10 harness connector:
component side 

AA00

(2)

Measure the resistance between the heated oxygen sensor
connector  B-02  (terminal  No.  3)  and  ECM  connector  B-10
(terminal No. 49).

｠

Should be less than 2 ohms.

ZK603157AA00

B-02 harness
connector:
component side 

1

2

3

4

(3)

Check  for  the  continuity  between  the  oxygen  sensor
connector B-02 (terminal No. 3) and ground.

｠

Not continuity.

Q:Is the harness wire in good condition?

YES:

 Go to Step 5.

NO:

 Repair it. Then go to Step 6.

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 P0037 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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-67

DIAGNOSTIC TROUBLE CODE PROCEDURES

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 P0037 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

13Ab-68

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0038: Heated Oxygen Sensor Heater Control Circuit High (bank 1, sensor 2)

M11310100164USA0000010000

ZK602829

1

3

2

4

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

2

1

4

3

AA00

RIGHT BANK HEATED OXYGEN SENSOR (REAR) HEATER CIRCUIT

20A

WHITE

BLUE-WHITE

WHITE

WHITE

WHITE

A-33X

MFI
RELAY

RELAY BOX
(ENGINE COMPARTMENT)

4

3

1

2

22

TO ECM

RIGHT BANK HEATED
OXYGEN SENSOR (REAR)

1

2

3

4

TO ECM TO ECM

ENGINE
CONTROL
MODULE

49

4

B-02

MU802605

B-10

A-13

OFF

ON

36

FUSIBLE LINK

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-69

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603589

MFI relay

A-33X

Connector: A-33X

AA00

ZK603593AA00

Right bank heated
oxygen sensor (rear)

Front exhaust 
pipe RH

B-02 (B)

Connector: B-02

ZK603591

ECM

B-10 (GR)

Connector: B-10

AA00

ZK603650AA00

A-13

Connector: A-13

 

CIRCUIT OPERATION

｠

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

｠

The ECM (terminal No. 49) controls continuity to the
right bank heated oxygen sensor (rear) 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

Right  bank  heated  oxygen  sensor  heater  (rear)
current 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

13Ab-70

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES