Mitsubishi Outlander (2013+). Manual - part 292

 

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Mitsubishi Outlander (2013+). Manual - part 292

 

 

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-49

YES : 

Go to Step 5.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 5. Check harness between engine coolant 
temperature sensor connector terminal and 
engine-ECU connector terminal WTSE.

• Check earthing line for damage.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 6. M.U.T.-III data list

• Item 6: Engine coolant temperature sensor

OK:

Engine cold state: At ambient temperature 

(atmospheric temperature) or equivalent.

Engine hot state: At 80 

 120 °C

Q: Is the check result normal? 

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Replace the engine-ECU.

Code No. P0131: Oxygen Sensor (front) Circuit Low Voltage

OPERATION

• The sensor signal is inputted to the engine-ECU 

connector terminal O2FL from the oxygen sensor 
(front) output terminal.

• The oxygen sensor (front) connector terminal is 

earthed with engine-ECU connector terminal 
OFLE.

FUNCTION

• The oxygen sensor (front) converts the concen-

tration of oxygen in the exhaust emission into a 
voltage and inputs the signal to the engine-ECU.

• When the air-fuel ratio is richer than the theoreti-

cal air-fuel ratio, the oxygen sensor (front) out-
puts a voltage of about 1 V. When it is leaner than 
the theoretical air-fuel ratio, it outputs a voltage of 
about 0 V.

• In response to the signal, the engine-ECU con-

trols the fuel injection amount so that the air-fuel 
ratio can be equivalent to the theoretical air-fuel 
ratio.

TROUBLE JUDGMENT

Check Conditions

• More than 1 minute have passed since the 

engine starting sequence was completed.

• Battery positive voltage is more than 11 V and is 

less than 16.5 V.

• Oxygen sensor (front) offset voltage is more than 

0.4 V and is less than 0.6 V.

Judgement Criterion

• Oxygen sensor (front) output voltage is less than 

0.2 V for 2 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Failed oxygen sensor (front)

• Open/short circuit or harness damage in oxygen 

sensor (front) circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Go to Step 2.

STEP 2. Perform voltage measurement at oxygen 
sensor (front) connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: "ON"

• Voltage between terminal engine-ECU OFLE line 

and body earth.

OK: 0.4 

 0.6 V

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 3.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-50

STEP 3. Check harness between oxygen sensor 
(front) connector terminal and engine-ECU 
connector terminal OFLE.

• Check earthing line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 4. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Replace the engine-ECU.

STEP 5. Check harness between oxygen sensor 
(front) connector terminal and engine-ECU 
connector terminal OFLE.

• Check earthing line for damage.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 6. Perform voltage measurement at oxygen 
sensor (front) connector.

• Use special tool test harness (MB991658) to con-

nect connector, and measure at pick-up harness.

• Engine: After warm-up

• Transmission: P range

• Voltage between terminal engine-ECU O2FL line 

and earth.

OK:

When the engine is 2,500 r/min, the output 

voltage should repeat 0.9 V or less 

 1.1 to 

1.5 V alternately.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 7.

STEP 7. Check oxygen sensor (front) itself. 

• Oxygen sensor check (Refer to 

P.13A-186

).

Q: Is the check result normal?

YES : 

Repair or replace the connector, or check 

intermediate connector, and repair if 
necessary. If intermediate connector is 
normal, check and repair harness between 
oxygen sensor (front) connector terminal 
and engine-ECU connector terminal O2FL.

• Check output line for short circuit.

NO : 

Replace oxygen sensor (front).

STEP 8. Check harness between oxygen sensor 
(front) connector terminal and engine-ECU 
connector terminal O2FL.

• Check output line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the damaged harness wire.

Code No. P0132: Oxygen Sensor (front) Circuit High Voltage

OPERATION

• The sensor signal is inputted to the engine-ECU 

connector terminal O2FL from the oxygen sensor 
(front) output terminal.

• The oxygen sensor (front) connector terminal is 

earthed with engine-ECU connector terminal 
OFLE.

FUNCTION

• The oxygen sensor (front) converts the concen-

tration of oxygen in the exhaust emission into a 
voltage and inputs the signal to the engine-ECU.

• When the air-fuel ratio is richer than the theoreti-

cal air-fuel ratio, the oxygen sensor (front) out-
puts a voltage of about 1 V. When it is leaner than 
the theoretical air-fuel ratio, it outputs a voltage of 
about 0 V.

• In response to the signal, the engine-ECU con-

trols the fuel injection amount so that the air-fuel 
ratio can be equivalent to the theoretical air-fuel 
ratio.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-51

TROUBLE JUDGMENT

Check Conditions

• Oxygen sensor (front) offset voltage is more than 

0.4 V and is less than 3.8 V.

• More than 2 seconds have passed since the 

engine starting sequence was completed.

Judgement Criterion

• Oxygen sensor (front) output voltage is more than 

1.2 V for 2 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Short circuit in oxygen sensor (front) circuit or 

loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Are the check results normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Go to Step 2.

STEP 2. Check harness between oxygen sensor 
(front) connector terminal and engine-ECU 
connector terminal O2FL.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 3. Check harness between oxygen sensor 
(front) connector terminal and engine-ECU 
connector terminal OFLE.

• Check earthing line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the connector, or repair 
the damaged harness wire.

STEP 4. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Replace the engine-ECU.

Code No. P0133: Oxygen Sensor (front) Circuit Slow Response

OPERATION

• The sensor signal is inputted to the engine-ECU 

connector terminal O2FL from the oxygen sensor 
(front) output terminal.

• The oxygen sensor (front) connector terminal is 

earthed with engine-ECU connector terminal 
OFLE.

FUNCTION

• The oxygen sensor (front) converts the concen-

tration of oxygen in the exhaust emission into a 
voltage and inputs the signal to the engine-ECU.

• When the air-fuel ratio is richer than the theoreti-

cal air-fuel ratio, the oxygen sensor (front) out-
puts a voltage of about 1 V. When it is leaner than 
the theoretical air-fuel ratio, it outputs a voltage of 
about 0 V.

• In response to the signal, the engine-ECU con-

trols the fuel injection amount so that the air-fuel 
ratio can be equivalent to the theoretical air-fuel 
ratio.

TROUBLE JUDGMENT

Check Conditions

• Engine coolant temperature is more than 60°C.

• Engine speed is more than 1,200 r/min and is 

less than 3,000 r/min. <4B11>

• Engine speed is more than 1,100 r/min and is 

less than 3,000 r/min. <4B12>

• Volumetric efficiency is more than 27 % and is 

less than 65 %. <4B11>

• Volumetric efficiency is more than 18 % and is 

less than 60 %. <4B12>

• Under the closed loop air/fuel control.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-52

• The accelerator pedal is open.

• Short-term fuel trim is more than −25 % and is 

less than +25 %.

• More than 2 seconds have elapsed after the 

above mentioned conditions have been met.

• The engine-ECU monitors for this condition for 7 

cycles of 10 seconds each during the drive cycle.

Judgement Criterion

• The average of the oxygen sensor (front) 

rich/lean switching frequency is less than 6 times 
per 10 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Failed oxygen sensor (front)

• Loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Go to Step 2.

STEP 2. Check oxygen sensor (front) itself. 

• Oxygen sensor (front) check (Refer to 

P.13A-186

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace oxygen sensor (front).

STEP 3. Connector check: oxygen sensor (front) 
connector and engine-ECU connector

Q: Are the check results normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the connector.

STEP 4. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item AC: Oxygen sensor (front)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

NO : 

Replace the engine-ECU.

Code No. P0134: Oxygen Sensor (front) Circuit No Activity Detected

OPERATION

• Check code No. P0131: oxygen sensor (front) cir-

cuit low voltage (Refer to 

P.13A-49

).

• Check code No. P0261: No. 1 injector circuit low 

input (Refer to 

P.13A-62

).

• Check code No. P0262: No. 1 injector circuit high 

input (Refer to 

P.13A-63

).

• Check code No. P0264: No. 2 injector circuit low 

input (Refer to 

P.13A-64

).

• Check code No. P0265: No. 2 injector circuit high 

input (Refer to 

P.13A-65

).

• Check code No. P0267: No. 3 injector circuit low 

input (Refer to 

P.13A-66

).

• Check code No. P0268: No. 3 injector circuit high 

input (Refer to 

P.13A-67

).

• Check code No. P0270: No. 4 injector circuit low 

input (Refer to 

P.13A-68

).

• Check code No. P0271: No. 4 injector circuit high 

input (Refer to 

P.13A-69

).

FUNCTION

• The oxygen sensor (front) converts the concen-

tration of oxygen in the exhaust emission into a 
voltage and inputs the signal to the engine-ECU.

• When the air-fuel ratio is richer than the theoreti-

cal air-fuel ratio, the oxygen sensor (front) out-
puts a voltage of about 1 V. When it is leaner than 
the theoretical air-fuel ratio, it outputs a voltage of 
about 0 V.

• In response to the signal, the engine-ECU con-

trols the fuel injection amount so that the air-fuel 
ratio can be equivalent to the theoretical air-fuel 
ratio.

 

 

 

 

 

 

 

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