Mitsubishi Outlander XL. Manual — part 259

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 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 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

｠

Heated oxygen sensor heater (rear) monitor

｠

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-231

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITION

Logic Flow Chart

Yes

Yes

No

No

No

No

No

No

No

Monitoring

condition

Yes

Yes

Yes

F1 = 1

F1 = 1

F2 = F2 + 1, F1 = 0

F1 = F2 = 0

Good

Continuous fuel cut > 2secs

Vehicle speed > 30km/h

Vehicle speed < 1.5m/h

Yes

Yes

ZK603721AA00

Engine speed > 1500rpm

End

End

Start

F2 >= 3

Malfunction

Yes

Yes

Load valve > 40%

No

Have 10secs passed?

Yes

No

No

Output voltage

change < 0.313V

13Ab-232

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

Check Conditions

｠

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

｠

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

｠

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

｠

Repeat 3 or more times: drive*1, stop*2.

Drive*1

｠

Engine speed is higher than 1,500 r/min.

｠

Volumetric efficiency is higher than 40
percent.

｠

Vehicle speed is higher than 30 km/h (19
mph).

｠

A total of more than 10 seconds have
elapsed with the above mentioned
conditions, and more than 2 seconds have
elapsed with the fuel shut off.

Stop*2:

｠

Vehicle speed is lower than 1.5 km/h (1.0
mph).

Judgement Criterion

｠

Change in the output voltage of the right bank
heated oxygen sensor (rear) is lower than 0.313
volt.

NOTE:

Monitoring stops after fuel has been shut

off for more than 38 seconds.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 13 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).

a
.

Transaxle: 2nd speed

b
.

Drive with wide open throttle

c
.

Engine: 3,500 r/min

｠

The output voltages should be between 0.6 and 1.0
volt.

(4)

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

Q:Is the sensor operating properly?

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-233

DIAGNOSTIC TROUBLE CODE PROCEDURES

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 23 P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0131 set?

YES:

Refer to, P0137 - Heated Oxygen Sensor Circuit Low

Voltage (bank 1, sensor 2) P.13Ab-217, DTC P0138 - Heated
Oxygen Sensor Circuit High Voltage (bank 1, sensor 2) P.
13Ab-222.

NO:

The inspection is complete.

13Ab-234

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES