Mitsubishi Outlander (2013+). Manual — part 295

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-61

STEP 6. Check harness between
electronic-controlled throttle valve connector
terminal and engine-ECU connector terminal
TPSS.

• Check output line for open/short circuit and dam-

age.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

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

STEP 7. Replace the electronic-controlled
throttle valve

• After replacing the electronic-controlled throttle

valve, reconfirm whether the diagnosis code is
set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P0223: Throttle Position Sensor (sub) Circuit High Input

OPERATION

• A power voltage of 5 V is applied to the elec-

tronic-controlled throttle valve connector terminal
from the engine-ECU connector terminal TPS5.

• The power voltage is earthed to the engine-ECU

connector terminal TPSE from the electronic-con-
trolled throttle valve connector terminal.

• The sensor signal is inputted to the engine-ECU

connector terminal TPSS from the electronic-con-
trolled throttle valve output terminal.

FUNCTION

• The throttle position sensor converts the throttle

valve position into voltage and inputs it into the
engine-ECU.

• The engine-ECU controls the throttle valve open-

ing angle.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is "ON" position.

Judgement Criterion

• Throttle position sensor (sub) output voltage is

more than 4.8 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree is restricted.

• Throttle opening degree position is in default

position if throttle position sensor (main) fails.

PROBABLE CAUSES

• Failed throttle position sensor (sub)

• Open circuit and harness damage in throttle posi-

tion sensor (sub) circuit or loose connector con-
tact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Data list reference table (Refer to

P.13A-155

).

a. Item 15: Throttle position sensor (sub)

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
electronic-controlled throttle valve connector.

• Disconnect connector, and measure at harness

side.

• Resistance between terminal engine-ECU TPSE

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
electronic-controlled throttle valve connector
terminal and engine-ECU connector terminal
TPSE.

• 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.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-62

STEP 4. M.U.T.-III data list

• Data list reference table (Refer to

P.13A-155

).

a. Item 15: Throttle position sensor (sub)

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. Replace the electronic-controlled
throttle valve

• After replacing the electronic-controlled throttle

valve, reconfirm whether the diagnosis code is
set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P0261: No. 1 Injector Circuit Low Input

OPERATION

• Power is supplied to the injector connector termi-

nal from the engine control relay connector termi-
nal.

• The engine-ECU connector terminal INJ1 makes

the power transistor in the unit be in ON position,
and that makes currents go on the injector con-
nector terminal.

FUNCTION

• The engine-ECU controls the power supply inter-

val of the injector.

• The fuel injection amount of the injector depends

on the power supply interval.

TROUBLE JUDGMENT

Check Condition

• Engine is running.

Judgement Criterion

• The supply voltage is less than 3 V without the

injector driving.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Failed No. 1 injector

• Open/short circuit or harness damage in No. 1

injector circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III actuator test

• Item 1: No. 1 injector

OK: Idling state varies.

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 No. 1 injector itself.

• No. 1 Injector connector check.

• Injector check (Refer to

P.13A-188

).

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair or replace the connector, or replace
the No. 1 injector.

STEP 3. Perform voltage measurement at No. 1
injector connector.

• Disconnect connector, and measure at harness

side.

• Ignition switch: "ON"

• Voltage between terminal power supply line and

body earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

STEP 4. Check harness between engine control
relay connector terminal and No. 1 injector
connector terminal power supply line.

• Check power supply line for damage.

Q: Is the check result normal?

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-63

YES :

Go to Step 5.

NO :

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

STEP 5. Check harness between No. 1 injector
connector terminal and engine-ECU connector
terminal INJ1.

• Check output line for open/short circuit and dam-

age.

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 signal wave pattern
measurement at engine-ECU connector (Using
an oscilloscope).

• Disconnect engine-ECU connector, and connect

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

• Engine: Idling

• Transmission: P range

• Voltage between terminal INJ1 and body earth.

OK: Waveforms should be displayed on
inspection procedure using an oscilloscope
(Refer to

P.13A-174

).

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. P0262: No. 1 Injector Circuit High Input

OPERATION

• Power is supplied to the injector connector termi-

nal from the engine control relay connector termi-
nal.

• The engine-ECU connector terminal INJ1 makes

the power transistor in the unit be in ON position,
and that makes currents go on the injector con-
nector terminal.

FUNCTION

• The engine-ECU controls the power supply inter-

val of the injector.

• The fuel injection amount of the injector depends

on the power supply interval.

TROUBLE JUDGMENT

Check Condition

• Engine is running.

Judgement Criterion

• The coil current is more than 4.5 A with the injec-

tor driving.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Failed No. 1 injector

• Open/short circuit or harness damage in No. 1

injector circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III actuator test

• Item 1: No. 1 injector

OK: Idling state varies.

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 No. 1 injector itself.

• No. 1 Injector connector check.

• Injector check (Refer to

P.13A-188

).

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the No. 1 injector.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-64

STEP 3. Check harness between No. 1 injector
connector terminal and engine-ECU connector
terminal INJ1.

• Check output line for open/short circuit and dam-

age.

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. Perform signal wave pattern
measurement at engine-ECU connector (Using
an oscilloscope).

• Disconnect engine-ECU connector, and connect

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

• Engine: Idling

• Transmission: P range

• Voltage between terminal INJ1 and body earth.

OK: Waveforms should be displayed on
inspection procedure using an oscilloscope
(Refer to

P.13A-174

).

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. P0264: No. 2 Injector Circuit Low Input

OPERATION

• Power is supplied to the injector connector termi-

nal from the engine control relay connector termi-
nal.

• The engine-ECU connector terminal INJ2 makes

the power transistor in the unit be in ON position,
and that makes currents go on the injector con-
nector terminal.

FUNCTION

• The engine-ECU controls the power supply inter-

val of the injector.

• The fuel injection amount of the injector depends

on the power supply interval.

TROUBLE JUDGMENT

Check Condition

• Engine is running.

Judgement Criterion

• The supply voltage is less than 3 V without the

injector driving.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSES

• Failed No. 2 injector

• Open/short circuit or harness damage in No. 2

injector circuit or loose connector contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III actuator test

• Item 1: No. 2 injector

OK: Idling state varies.

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 No. 2 injector itself.

• No. 2 Injector connector check.

• Injector check (Refer to

P.13A-188

).

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair or replace the connector, or replace
the No. 2 injector.