Mitsubishi Outlander XL. Manual - part 261

STEP 3. Check for harness between the center exhaust pipe
heated oxygen sensor connector D-30 and the ECM
connector B-11.

(1)

Disconnect the center exhaust pipe heated oxygen sensor
connector D-30 and the ECM connector B-11.

D-30 Harness
connector:
component side 

2

1

4

3

ZK603267AA00

B-11 Harness
connector:
component side 

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

(2)

Measure  the  resistance  between  the  center  exhaust  pipe
heated  oxygen  sensor  connector  D-30  and  the  ECM
connector B-11.

a
.

Connector  D-30  (terminal  No.  4)  and  connector  B-11
(terminal No. 116).

b
.

Connector  D-30  (terminal  No.  3)  and  connector  B-11
(terminal No. 101).

｠

Should be less than 2 ohms.

D-30 Harness
connector:
component side 

2

1

4

3

ZK603268AA00

(3)

Check  for  the  continuity  between  the  oxygen  sensor
connector D-30 and ground.

a
.

Connector D-30 (terminal No. 4) and ground

b
.

Connector D-30 (terminal No. 3) and ground

｠

Not continuity.

Q:Is the harness wire in good condition?

YES:

 Go to Step 4.

NO:

 Repair it. Refer to GROUP 00E, Harness Connector

Inspection P.00E-2. Then go to Step 4.

STEP 4. 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  23  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0137 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.

NO:

 It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-239

DIAGNOSTIC TROUBLE CODE PROCEDURES

Troubleshooting/Inspection Service Points How to Cope
with Intermittent Malfunctions P.00-15.

DTC P0144: Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor 3)

M11310100364USA0000010000

ZK602864

1 2
3 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

AA00

D-30

FROM MFI RELAY

TO ECM

1

4

2

3

CENTER EXHAUST PIPE HEATED OXYGEN SENSOR CIRCUIT

CENTER EXHAUST PIPE
HEATED OXYGEN
SENSOR

B-11

YELLO

W

ORANGE

ORANGE

YELLO

W

ENGINE
CONTROL
MODULE

0.5 V

C-129

15

116

101

17

13Ab-240

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK600417 AA00

Center exhaust pipe
heated oxygen sensor

Connector: D-30

D-30 (B)

Rear heater duct

ZK603592

ECM

B-11 (GR)

Connector: B-11

AA00

ZK603651AA00

C-129

Connector: C-129

 

CIRCUIT OPERATION

｠

A  voltage  corresponding  to  the  oxygen
concentration in the exhaust gas is sent to the ECM
(terminal No. 101) from the output terminal (terminal
No. 3) of the Center exhaust pipe heated oxygen
sensor.

｠

Terminal No. 4 of the Center exhaust pipe heated
oxygen sensor is grounded with ECM (terminal No.
116).

｠

The  ECM  applies  an  offset  voltage  of  0.5  volt  to
terminal No. 4 of the Center exhaust pipe heated
oxygen sensor.

TECHNICAL DESCRIPTION
The ECM checks for the Center exhaust pipe heated
oxygen sensor output voltage.

DESCRIPTIONS OF MONITOR METHODS

Center exhaust pipe heated oxygen sensor output
voltage is over the 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.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-241

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITION

Logic Flow Chart

Start

End

No

Yes

Yes

Yes

No

No

Malfunction

Good

Continuous

failure for 2secs

Output voltage

> 1.8V

Monitoring

conditions

ZK603713 AA00

Check Conditions

｠

2 seconds or more have passed since the engine
starting sequence was completed.

｠

Heated  oxygen  sensor  off  set  voltage  is  between
0.4 and 0.6 volt.

Judgement Criterion

｠

Center exhaust pipe Heated oxygen sensor output
voltage has continued to be 1.8 volts or higher for 2
seconds.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 24 P.13Ab-8.

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

｠

Connector damage.

｠

Harness damage

｠

ECM failed.

 

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

13Ab-242

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES