Mitsubishi Outlander XL. Manual — part 263

Judgement Criterion

｠

Center exhaust pipe oxygen sensor output voltage
does not reach 0.2 volt for 7 seconds from fuel cut
start.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 11 P.13Ab-8.

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

｠

Center exhaust pipe heated oxygen sensor failed.

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

STEP 1. Using scan tool MB991958, check data list item AD:
Heated Oxygen Sensor Bank 1, Sensor 3 (center exhaust).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Start the engine and run at idle.

(3)

Set scan tool MB991958 to the data reading mode for item
B1, Heated Oxygen Sensor Bank 1, Sensor 3 (center exhaust
pipe).

(4)

Warm up the engine.

｠

After increasing the output voltage 0.5 volt or more by the
engine revving, finish it. Then confirm that the output
voltage reduces to 0.2 volt or less within 6 seconds.

(5)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is the sensor operating properly?

YES:

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.

NO:

Replace the center exhaust pipe heated oxygen

sensor . Then go to Step 2.

STEP 2. 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 11 P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0145 set?

YES:

Refer to DTC P0145 - Heated Oxygen Sensor Circuit

Low Voltage (bank 1, sensor 3) P.13Ab-244, DTC P0144 -

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-247

DIAGNOSTIC TROUBLE CODE PROCEDURES

Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor
3) P.13Ab-240.

NO:

The inspection is complete.

DTC P0146: Heated Oxygen Sensor Circuit Slow Response (bank 1, sensor 3)

M11310100366USA0000010000

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-248

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.
106).

｠

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 does not change during specified.

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)

｠

Heated oxygen sensor heater (front) monitor

｠

Center exhaust pipe heated oxygen sensor

｠

Air/fuel ratio feedback monitor

Sensor (The sensor below is determined to be
normal)

｠

Mass airflow sensor

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-249

DIAGNOSTIC TROUBLE CODE PROCEDURES

｠

Engine coolant temperature sensor

｠

Intake air temperature sensor

｠

Barometric pressure sensor

13Ab-250

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES