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Mitsubishi Outlander XL. Manual - part 251

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

｠

Right bank heated oxygen sensor (front) failed.

｠

Harness damage

｠

Connector damage.

｠

ECM 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

｠

MB991316: Test Harness

STEP 1. Check harness connector B-03 at the right bank
heated oxygen sensor (front) harness connector B-10 at the
ECM for damage.

Q:Is the harness connector in good condition?

YES:

Go to Step 2.

NO:

Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection P.00E-2. Then go to Step 5.

STEP 2. Check the right bank heated oxygen sensor (front).

(1)

Disconnect the right bank heated oxygen sensor (front)
connector B-03 and connect test harness special tool,
MB991316, to the connector on the right bank heated oxygen
sensor (front) side.

(2)

Warm up the engine until engine coolant temperature
reaches 80°C (176°F) or higher.

(3)

Rev the engine for 5 minutes or more with the engine speed
of 2,500 r/min.

ZK604077

Heated
oxygen
sensor
component
side
connector

MB991316

Black

White

AA00

(4)

Connect a digital voltage meter between terminal No. 2 (black
clip) and terminal No. 4 (white clip).

(5)

While repeatedly revving the engine, measure the right bank
heated oxygen sensor (front) output voltage.

Standard value: 0.6 - 1.0 volts

｠

Be very careful when connecting the jumper wires;
incorrect connection can damage the heated oxygen
sensor.

｠

Be careful the heater can be damaged if a voltage
beyond 8 volts is applied to the heated oxygen sensor
heater.

NOTE:

If the sufficiently high temperature [of

approximate 400°C (752°F) or more] is not reached
although the heated oxygen sensor is normal, the output
voltage would be possibly low although the rich air/fuel
ratio. Therefore, if the output voltage is low, use a
jumper wire to connect the terminal No.1 (red clip) and
the terminal No. 3 (blue clip) of the heated oxygen
sensor with the positive terminal and the negative

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-199

DIAGNOSTIC TROUBLE CODE PROCEDURES

terminal of 8 volts power supply respectively, then
check again.

Q:Is the voltage between 0.6 and 1.0 volts?

YES:

Go to Step 3.

NO:

Replace the right bank heated oxygen sensor (front).

Then go to Step 5.

STEP 3. Check for harness between the right heated oxygen
sensor (front) connector B-03 and the ECM connector B-10.

(1)

Disconnect the right bank heated oxygen sensor (front)
connector B-03 and the ECM connector B-10.

ZK603254

16 15 14 13 12 11 10 9 8 7 6 5 4 3

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

AA00

B-10 harness
connector:
component side

B-03 harness
connector:
component side

(2)

Measure the resistance between the heated oxygen sensor
connector B-03 and the ECM connector B-10.

a
.

Connector B-03 (terminal No. 2) and connector B-10
(terminal No. 55).

b
.

Connector B-03 (terminal No. 4) and connector B-10
(terminal No. 54).

｠

Should be less than 2 ohms.

B-03 harness
connector:
component side

ZK603255AA00

(3)

Check for the continuity between the oxygen sensor
connector B-03 and ground.

a
.

Connector B-03 (terminal No. 2) and ground.

b
.

Connector B-03 (terminal No. 4) 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 5.

13Ab-200

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 4. Using scan tool MB991958, check data list item AC:
Heated Oxygen Sensor Bank 1, Sensor 1 (right front).

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
AC, Heated Oxygen Sensor Bank 1, Sensor 1 (right front).

｠

Warm up the engine. When the engine is revved, the output
voltage should battery positive voltage.

｠

Warm up the engine. When the engine is idling, the output
voltage should repeat 0.4 volt or less and 0.6 to 1.0 volt
alternately.

(4)

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 ECM. Then go to Step 5.

STEP 5. 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:

Retry the troubleshooting.

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.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-201

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0132: Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor 1)

M11310100187USA0000010000

ZK602838

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

AA00

ENGINE
CONTROL
MODULE

RIGHT BANK HEATED
OXYGEN SENSOR (FRONT)

FROM MFI RELAY

TO ECM

BLA

CK-WHITE

VIOLET

RIGHT BANK HEATED OXYGEN SENSOR (FRONT) CIRCUIT

B-10

B-03

MU802665

13Ab-202

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

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