Mitsubishi Outlander XL. Manual - part 219

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 right bank heated oxygen sensor (rear)
heater is on.

｠

Battery positive voltage is at between 11 and 16.5
volts.

Judgement Criterion

｠

The right bank heated oxygen sensor (rear) 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.13Ab-8.

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

｠

Right bank heated oxygen sensor (rear) failed.

｠

ECM failed.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-71

DIAGNOSTIC TROUBLE CODE PROCEDURES

 

DIAGNOSIS

Required Special Tool:

｠

MB991316: Test Harness

STEP 1. Check the right bank heated oxygen sensor (rear).

ZK603154

Heated
oxygen
sensor
component
side
connector

MD998464

Red

Blue

AA00

(1)

Disconnect  right  bank  heated  oxygen  sensor  (rear)
connector  B-02  and  connect  test  harness  special  tool,
MD998464, to the connector on the right bank heated oxygen
(rear) sensor side.

(2)

Measure  the  resistance  between  heated  oxygen  sensor
connector terminal No. 1 (red clip) and terminal No. 3 (blue
clip).

Standard value: 11 - 18 Ω [at 20°C (68°F)]

Q:Is the measured resistance between 11 and 18 ohms [at

20°C (68°F)]?

YES:

 Go to Step 2.

NO:

 Replace the right bank heated oxygen sensor (rear).

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  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0038 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 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  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0038 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

13Ab-72

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0043: Heated Oxygen Sensor Heater Control Circuit Low (bank 1, sensor 3)
<California>

M11310100361USA0000010000

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-73

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  right  bank  heated  oxygen  sensor  (front)
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.

｠

The  ECM  checks  whether  the  heater  voltage  is
within  a  specified  range  when  the  heater  is  not
energized.

13Ab-74

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES