Mitsubishi Outlander (2013+). Manual — part 306

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-105

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 accelerator pedal assembly

• After replacing the accelerator pedal assembly,

reconfirm whether the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P2127: Accelerator Pedal Position Sensor (sub) Circuit Low Input

OPERATION

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

tor pedal position sensor connector terminal from
the engine-ECU connector terminal 5VV.

• The power voltage is earthed to the engine-ECU

connector terminal EV from the accelerator pedal
position sensor connector terminal.

• The sensor signal is inputted to the engine-ECU

connector terminal APSS from the accelerator
pedal position sensor output terminal.

FUNCTION

• The accelerator pedal position sensor (sub) out-

puts voltage which corresponds to the accelera-
tor pedal depression.

• The engine-ECU checks whether the voltage is

within a specified range.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is "ON" position.

Judgement Criterion

• Accelerator pedal position sensor (sub) output

voltage is less than 0.2 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree is restricted.

• Throttle opening degree position is in default

position if accelerator pedal position sensor
(main) fails.

PROBABLE CAUSES

• Failed accelerator pedal position sensor

• Open/short circuit or harness damage in acceler-

ator pedal position sensor circuit or loose con-
nector 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 12: Accelerator pedal 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 voltage measurement at
accelerator pedal position sensor connector.

• Disconnect connector, and measure at harness

side.

• Ignition switch: "ON"

• Voltage between terminal engine-ECU 5VV and

body earth.

OK: 4.9

− 5.1 V

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 3.

STEP 3. Check harness between accelerator
pedal position sensor connector terminal and
engine-ECU connector terminal 5VV.

• 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 12: Accelerator pedal position sensor

(sub)

Q: Is the check result normal?

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-106

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 accelerator
pedal position sensor connector terminal and
engine-ECU connector terminal 5VV.

• 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. Check harness between accelerator
pedal position sensor connector terminal and
engine-ECU connector terminal APSS.

• 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 accelerator pedal assembly

• After replacing the accelerator pedal assembly,

reconfirm whether the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P2128: Accelerator Pedal Position Sensor (sub) Circuit High Input

OPERATION

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

tor pedal position sensor connector terminal from
the engine-ECU connector terminal 5VV.

• The power voltage is earthed to the engine-ECU

connector terminal EV from the accelerator pedal
position sensor connector terminal.

• The sensor signal is inputted to the engine-ECU

connector terminal APSS from the accelerator
pedal position sensor output terminal.

FUNCTION

• The accelerator pedal position sensor (sub) out-

puts voltage which corresponds to the accelera-
tor pedal depression.

• The engine-ECU checks whether the voltage is

within a specified range.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is "ON" position.

Judgement Criterion

• Accelerator pedal position sensor (sub) output

voltage is more than 2.5 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree is restricted.

• Throttle opening degree position is in default

position if accelerator pedal position sensor
(main) fails.

PROBABLE CAUSES

• Failed accelerator pedal position sensor

• Open circuit or harness damage in accelerator

pedal position sensor 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 12: Accelerator pedal 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
accelerator pedal position sensor connector.

• Disconnect connector, and measure at harness

side.

• Resistance between terminal engine-ECU EV

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.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-107

STEP 3. Check harness between accelerator
pedal position sensor connector terminal and
engine-ECU connector terminal EV.

• 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 12: Accelerator pedal 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 accelerator pedal assembly

• After replacing the accelerator pedal assembly,

reconfirm whether the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P2135: Throttle Position Sensor (main and sub) Range/Performance Problem

OPERATION

• Check code No. P0122: throttle position sensor

(main) circuit low input (Refer to

P.13A-45

).

• Check code No. P0222: throttle position sensor

(sub) circuit low input (Refer to

P.13A-60

).

FUNCTION

• Engine-ECU checks the throttle position sensor

output signal characteristics for abnormal condi-
tions.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is "ON" position.

• Throttle position sensor (main) output voltage is

more than 0.2 V and is less than 4.8 V.

• Throttle position sensor (sub) output voltage is

more than 0.2 V and is less than 4.8 V.

Judgement Criterion

• The sum of the output voltage of the throttle posi-

tion sensors (main and sub) is less than 4.5 V, or
more than 5.5 V.

Check Conditions

• Throttle position sensor (main) output voltage is

more than 0.2 V and is less than 4.8 V.

• Throttle position sensor (sub) output voltage is

more than 0.2 V and is less than 4.8 V.

• Ignition switch is "ON" position.

• Throttle position sensor (main and sub) output

voltage is less than the target throttle position
sensor (main) voltage by 0.9 V or less.

Judgement Criterion

• Voltage obtained with the formula given below is

more than 0.3 V: throttle position sensor (main)
voltage

− throttle position sensor (sub) voltage

NOTE: The throttle position sensor voltage used for
the judgment is converted into the throttle position
sensor voltage for the internal processing by the
engine-ECU.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree position is in default

position.

PROBABLE CAUSES

• Failed throttle position sensor

• Harness damage in throttle position sensor circuit

or loose connector contact

DIAGNOSIS PROCEDURE

STEP 1. 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 4.

NO :

Go to Step 2.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-108

STEP 2. Check harness between
electronic-controlled throttle valve connector
terminal and engine-ECU connector terminal
TPSE.

• Check earthing line for damage.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

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

STEP 3. M.U.T.-III diagnosis code

• Reconfirmation of diagnosis code.

Q: Is diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

−

How to Cope with Intermittent Malfunctions
).

STEP 4. Check harness between
electronic-controlled throttle valve connector
terminal and engine-ECU connector terminal
TPS5.

• Check power supply line for damage.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair or replace the connector repair the
damaged harness wire.

STEP 5. Check harness between
electronic-controlled throttle valve connector
terminal and engine-ECU connector terminal
TPSM.

• Check output line for damage.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair or replace the connector repair the
damaged harness wire.

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

• Check output line for damage.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair or replace the connector repair the
damaged harness wire.

STEP 7. Replace throttle body assembly.

• After replacing the throttle body assembly, recon-

firm whether the diagnosis code is set.

Q: Is the diagnosis code set?

YES :

Replace the engine-ECU.

NO :

Check end.

Code No. P2138: Accelerator Pedal Position Sensor (main and sub) Range/Performance Problem

OPERATION

• Check code No. P2122: accelerator pedal posi-

tion sensor (main) circuit low input (Refer to

P.13A-102

).

• Check code No. P2127: accelerator pedal posi-

tion sensor (sub) circuit low input (Refer to

P.13A-105

).

FUNCTION

• Engine-ECU checks the accelerator pedal posi-

tion sensor output signal characteristics for
abnormal conditions.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is "ON" position.

• Change of accelerator pedal position sensor

(sub) output voltage per 25 milliseconds is less
than 0.06 V.

Judgement Criterion

• Voltage obtained with the formula given below is

more than 0.4 V: accelerator pedal position sen-
sor (sub) voltage

− accelerator pedal position

sensor (main) voltage

NOTE: The accelerator pedal position sensor volt-
age used for the judgment is converted into the
accelerator pedal position sensor voltage for the
internal processing by the engine-ECU.

Check Conditions

• Ignition switch is "ON" position.

• Change of accelerator pedal position sensor

(main) output voltage per 25 milliseconds is less
than 0.06 V.