Mitsubishi Outlander XL. Manual — part 258

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

CIRCUIT OPERATION

｠

A voltage corresponding to the oxygen
concentration in the exhaust gas is sent to the ECM
(terminal No. 56) from the output terminal (terminal
No. 4) of the right bank heated oxygen sensor
(rear).

｠

Terminal No. 2 of the right bank heated oxygen
sensor (rear) is grounded with ECM (terminal No.
57).

｠

The ECM applies an offset voltage of 0.5 volt to
terminal No. 2 of the right bank heated oxygen
sensor (rear).

TECHNICAL DESCRIPTION

｠

The output signal of the right bank heated oxygen
sensor (front) is compensated by the output signal
of the right bank heated oxygen sensor (rear).

｠

The ECM checks for the right bank heated oxygen
sensor (rear) output voltage.

DESCRIPTIONS OF MONITOR METHODS

Right bank heated oxygen sensor (rear) output
voltage does not reach 0.2 volt after fuel cut
operation.

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

｠

Heated oxygen sensor heater (rear) monitor

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-227

DIAGNOSTIC TROUBLE CODE PROCEDURES

｠

Air/fuel ratio feedback monitor

Sensor (The sensor below is determined to be
normal)

｠

Mass airflow sensor

｠

Engine coolant temperature sensor

｠

Intake air temperature sensor

｠

Barometric pressure sensor

DTC SET CONDITION

Logic Flow Chart

No

ZK604081AA00

No

Yes

No

No

No

No

Good

Malfunction

Start

End

Yes

Time from 0.4V to 0.2V

> Tslope?

Yes

Fuel cut starts?

Monitoring conditions

Fuel cut continues?

Yes

Output voltage >= 0.5V

at fuel cut start?

Yes

Output voltage
reaches 0.2V?

Yes

Yes

Time from fuel cut start

> Trl?

No

Check Conditions

｠

Engine coolant temperature is higher than 76°C
(169°F).

13Ab-228

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

｠

The right bank heated oxygen sensor (front) is
active.

｠

The cumulative mass airflow sensor output is higher
than 1638 g.

｠

Fuel is being shut off.

Judgement Criterion

｠

Right bank oxygen sensor (rear) output voltage
does not reach 0.2 volt for 6 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: )

｠

Right bank heated oxygen sensor (rear) 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 2 (right rear).

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
AD, Heated Oxygen Sensor Bank 1, Sensor 2 (right rear).

(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 right bank heated oxygen sensor (rear).

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 P0139 set?

YES:

Refer to DTC P0137 - Heated Oxygen Sensor Circuit

Low Voltage (bank 1, sensor 2) P.13Ab-217, DTC P0138 -

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-229

DIAGNOSTIC TROUBLE CODE PROCEDURES

Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor
2) P.13Ab-222.

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.

DTC P0140: Heated Oxygen Sensor Circuit No Activity Detected (bank 1, sensor 2)

M11310100193USA0000010000

ZK602839

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

0.5 V

2

1

4

3

AA00

ENGINE
CONTROL
MODULE

RIGHT BANK HEATED
OXYGEN SENSOR (REAR)

FROM MFI RELAY

TO ECM

1

2

3

4

57

PINK

LIGHT GREEN

56

RIGHT BANK HEATED OXYGEN SENSOR (REAR) CIRCUIT

B-10

B-02

MU802605

13Ab-230

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES