Mitsubishi Outlander (2013+). Manual - part 289

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-37

STEP 3. Check harness between manifold 
absolute pressure sensor connector terminal 
and engine-ECU connector terminal MAP5.

• Check power supply 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 8: Manifold absolute pressure sensor

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 manifold 
absolute pressure sensor connector terminal 
and engine-ECU connector terminal MAP5.

• Check power supply 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 
manifold absolute pressure sensor connector.

• Use special tool test harness (MB991709) to con-

nect connector, and measure at pick-up harness.

• Ignition switch: "ON"

• Voltage between terminal engine-ECU MAP line 

and body earth.

Altitude 0 m: 3.8 

− 4.2 V

Altitude 600 m: 3.5 

− 3.9 V

Altitude 1,200 m: 3.3 

− 3.7 V

Altitude 1,800 m: 3.0 

− 3.4 V

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 7.

STEP 7. Check harness between manifold 
absolute pressure sensor connector terminal 
and engine-ECU connector terminal MAP.

• Check output line for short circuit.

Q: Is the check result normal?

YES : 

Replace the manifold absolute pressure 

sensor.

NO : 

Repair the damaged harness wire.

STEP 8. Perform voltage measurement at 
engine-ECU connector.

• Disconnect engine-ECU harness, and connect 

special tool power plant ECU check harness 
(MB992110) to measure at connector for inspec-
tion.

• Ignition switch: "ON"

• Voltage between terminal MAP and body earth.

Altitude 0 m: 3.8 

− 4.2 V

Altitude 600 m: 3.5 

− 3.9 V

Altitude 1,200 m: 3.3 

− 3.7 V

Altitude 1,800 m: 3.0 

− 3.4 V

Q: Is the check result normal?

YES : 

Go to Step 4. 

NO : 

Repair or replace the connector, or check 

and repair harness between manifold 
absolute pressure sensor connector 
terminal and engine-ECU connector 
terminal MAP.

• Check output line for open circuit and 

damage.

Code No. P0108: Manifold Absolute Pressure Sensor Circuit High Input

OPERATION

• A power voltage of 5 V is applied to the manifold 

absolute pressure sensor power terminal from 
the engine-ECU connector terminal MAP5 and 
earthed to the engine-ECU connector terminal 

MAPE from the manifold absolute pressure sen-
sor connector terminal.

• The sensor signal is inputted to the engine-ECU 

connector terminal MAP from the manifold abso-
lute pressure sensor output terminal.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-38

FUNCTION

• The manifold absolute pressure sensor detects a 

change in inlet manifold pressure and inputs the 
signal to the engine-ECU.

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

rects the fuel injection amount, etc.

TROUBLE JUDGMENT

Check Condition

• More than 8 minutes have passed since the 

engine starting sequence was completed, when 
the engine coolant temperature at engine start is 
less than 0

°C.

Judgement Criterion

• Manifold absolute pressure sensor output voltage 

is more than 4.6 V (corresponding to a manifold 
absolute pressure of 117 kPa or more) for 2 sec-
onds.

FAIL-SAFE AND BACKUP FUNCTION

• Control as if the inlet manifold vacuum pressure 

is 101 kPa.

PROBABLE CAUSES

• Failed manifold absolute pressure sensor

• Open circuit or harness damage in manifold 

absolute pressure sensor circuit or loose connec-
tor 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 8: Manifold absolute pressure sensor

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 resistance measurement at 
manifold absolute pressure sensor connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal engine-ECU MAPE 

line and body earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 5. 

NO : 

Go to Step 3. 

STEP 3. Check harness between manifold 
absolute pressure sensor connector terminal 
and engine-ECU connector terminal MAPE.

• Check earthing line for open circuit and damage.

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 8: Manifold absolute pressure sensor

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. M.U.T.-III data list

• Data list reference table (Refer to 

P.13A-155

).

a. Item 8: Manifold absolute pressure sensor

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 6.

STEP 6. Replace the manifold absolute pressure 
sensor

• After replacing the manifold absolute pressure 

sensor, reconfirm whether the diagnosis code is 
set.

Q: Is the diagnosis code set?

YES : 

Replace the engine-ECU.

NO : 

Check end.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-39

Code No. P0112: Intake Air Temperature Sensor Circuit Low Input

OPERATION

• A power voltage of 5 V is applied to the intake air 

temperature sensor power terminal of air flow 
sensor from the engine-ECU connector terminal 
AFS5, ATS.

• The power voltage is earthed to the engine-ECU 

connector terminal AFSE from the intake air tem-
perature sensor connector terminal.

FUNCTION

• The intake air temperature sensor converts the 

intake air temperature into a voltage and inputs 
the voltage signal to the engine-ECU.

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

rects the fuel injection amount, etc.

• The intake air temperature sensor is a kind of 

resistor, which has characteristics to reduce its 
resistance as the intake air temperature rises. 
Therefore, the sensor output voltage varies with 
the intake air temperature, and becomes lower as 
the intake air temperature rises.

TROUBLE JUDGMENT

Check Condition

• More than 2 seconds have passed since the 

engine starting sequence was completed.

Judgement Criterion

• Intake air temperature sensor output voltage is 

less than 0.2 V (corresponding to an intake air 
temperature of 115

°C or more) for 2 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• Control as if the intake air temperature is 25°C.

PROBABLE CAUSES

• Failed intake air temperature sensor

• Short circuit in intake air temperature sensor cir-

cuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Item 5: Intake air temperature sensor

OK: At ambient temperature (atmospheric 
temperature) or equivalent.

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 intake air temperature sensor 
itself.

• Air flow sensor connector check.

• Intake air temperature sensor check (Refer to 

P.13A-185

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the connector, or replace 
the air flow sensor.

STEP 3. Perform voltage measurement at air flow 
sensor connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: "ON"

• Voltage between terminal engine-ECU AFS5 or 

ATS line and body earth.

OK: 4.5 

− 4.9 V

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check harness between air flow sensor 
connector terminal and engine-ECU connector 
terminal AFS5, ATS.

• Check power line for short circuit.

Q: Is the check result normal? 

YES : 

Go to Step 5.

NO : 

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

STEP 5. M.U.T.-III data list

• Item 5: Intake air temperature sensor

OK: At ambient temperature (atmospheric 
temperature) or equivalent.

Q: Is the check result normal?

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-40

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. P0113: Intake Air Temperature Sensor Circuit High Input

OPERATION

• A power voltage of 5 V is applied to the intake air 

temperature sensor power terminal of air flow 
sensor connector from the engine-ECU connec-
tor terminal AFS5, ATS.

• The power voltage is earthed to the engine-ECU 

connector terminal AFSE from the intake air tem-
perature sensor connector terminal.

FUNCTION

• The intake air temperature sensor converts the 

intake air temperature into a voltage and inputs 
the voltage signal to the engine-ECU.

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

rects the fuel injection amount, etc.

• The intake air temperature sensor is a kind of 

resistor, which has characteristics to reduce its 
resistance as the intake air temperature rises. 
Therefore, the sensor output voltage varies with 
the intake air temperature, and becomes lower as 
the intake air temperature rises.

TROUBLE JUDGMENT

Check Condition

• More than 2 seconds have passed since the 

engine starting sequence was completed.

Judgement Criterion

• Intake air temperature sensor output voltage is 

more than 4.6 V (corresponding to an intake air 
temperature of 

−40°C or less) for 2 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• Control as if the intake air temperature is 25°C.

PROBABLE CAUSES

• Failed intake air temperature sensor

• Open circuit or harness damage in intake air tem-

perature sensor circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Item 5: Intake air temperature sensor

OK: At ambient temperature (atmospheric 
temperature) or equivalent.

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 intake air temperature sensor 
itself.

• Air flow sensor connector check.

• Intake air temperature sensor check (Refer to 

P.13A-185

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the connector, or replace 
the air flow sensor.

STEP 3. Perform voltage measurement at air flow 
sensor connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: "ON"

• Voltage between terminal engine-ECU AFS5 or 

ATS line and body earth.

OK: 4.5 

− 4.9 V

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 4.