Mitsubishi Outlander (2013+). Manual - part 303

 

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Mitsubishi Outlander (2013+). Manual - part 303

 

 

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-93

Code No. P0630: Chassis Number not Programmed

FUNCTION

• An engine-ECU checks whether vehicle chassis 

number is stored or not.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is "ON" position.

Judgement Criterion

• Chassis number has not been written.

FAIL-SAFE AND BACKUP FUNCTION

• None

PROBABLE CAUSE

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Entered chassis number confirmed.

Q: Is a chassis number entered?

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 with one into 
which vehicle information is correctly 
entered.

Code No. P0638: Throttle Valve Control Servo Circuit Range/Performance Problem

OPERATION

• Check code No. P2101: throttle valve control 

servo magneto malfunction (Refer to 

P.13A-102

).

FUNCTION

• Engine-ECU checks the electronic controlled 

throttle system for abnormal conditions.

TROUBLE JUDGMENT

Check Conditions

• Battery positive voltage is more than 8.3 V.

• Throttle position sensor (main) output voltage is 

more than 0.2 V and is less than 4.8 V.

• Drop of throttle position sensor (main) output volt-

age per 100 milliseconds is more than 0.04 V.

Judgement Criterion

• Throttle position sensor (main) output voltage is 

higher than the target throttle position sensor 
(main) voltage by 0.5 V or more.

Check Conditions

• Battery positive voltage is more than 8.3 V.

• Throttle position sensor (main) output voltage is 

more than 0.2 V and is less than 4.8 V.

• Target throttle position sensor (main) output volt-

age is less than 1.5 V.

Judgement Criterion

• Difference between throttle position sensor 

(main) output voltage and target throttle position 
sensor (main) voltage is more than 0.6 V.

Check Conditions

• Battery positive voltage is more than 8.3 V.

• Throttle position sensor (main) output voltage is 

more than 0.2 V and is less than 4.8 V.

Judgement Criterion

• Difference between throttle position sensor 

(main) output voltage and target throttle position 
sensor (main) voltage is more than 1 V.

Check Condition

• Battery positive voltage is more than 8.3 V.

Judgement Criterion

• Throttle position sensor (main) default opening 

learnt value is more than 4 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree position is in default 

position.

PROBABLE CAUSES

• Failed throttle valve return spring.

• Failed throttle valve operation.

• Failed throttle valve control servo.

• Harness damage in throttle valve control servo 

circuit or loose connector contact.

• Failed engine-ECU.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-94

DIAGNOSIS PROCEDURE

STEP 1. Check throttle body.

• Check whether the throttle valve return spring is 

normal.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the throttle body assembly.

STEP 2. Check throttle valve control servo itself.

• Electronic-controlled throttle valve control check.

• Throttle valve control servo check (Refer to 

P.13A-189

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the connector, or replace 
the throttle body assembly.

STEP 3. Check harness between 
electronic-controlled throttle valve connector 
terminal and engine-ECU connector terminal 
ETV+.

• Check signal line for 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. Check harness between 
electronic-controlled throttle valve connector 
terminal and engine-ECU connector terminal 
ETV-.

• Check output line for damage.

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 diagnosis code

• Reconfirmation of diagnosis code.

Q: Is diagnosis code set?

YES : 

Replace engine-ECU.

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunctions 
).

Code No. P0642: Throttle Position Sensor Power Supply

FUNCTION

• Engine-ECU checks the throttle position sensor 

power voltage for abnormal conditions.

TROUBLE JUDGMENT

Check Condition

• Battery positive voltage is more than 6.3 V.

Judgement Criterion

• Throttle position sensor power voltage is less 

than 4.3 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree position is in default 

position.

PROBABLE CAUSE

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. 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 
).

Code No. P0657: Throttle Valve Control Servo Relay Circuit Malfunction

OPERATION

• Battery voltage is applied to the throttle valve 

control servo relay terminal connector terminal.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-95

• Battery voltage is applied to the throttle valve 

control servo relay terminal connector terminal 
from the engine control relay connector terminal.

• Engine-ECU connector terminal C/RL applies 

current to the throttle valve control servo relay 
coil by turning ON the power transistor in the unit 
in order to turn the relay ON.

• When the throttle valve control servo relay turns 

ON, battery voltage is supplied by the throttle 
valve control servo relay connector terminal to 
the engine-ECU connector terminal RSB.

FUNCTION

• When the ignition switch ON signal is input into 

the engine-ECU, the engine-ECU turns ON the 
throttle valve control servo.

TROUBLE JUDGMENT

Check Condition

• Battery positive voltage is more than 8.3 V.

Judgement Criterion

• The power line voltage of the electronic-control-

led throttle system is less than 6.0 V.

FAIL-SAFE AND BACKUP FUNCTION

• Throttle opening degree position is in default 

position.

PROBABLE CAUSES

• Failed throttle valve control servo relay

• Open/short circuit or harness damage in throttle 

valve control servo relay circuit or loose connec-
tor contact.

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check throttle valve control servo relay 
itself.

• Throttle valve control servo relay connector 

check.

• Throttle valve control servo relay check (Refer to 

P.13A-185

).

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair or replace the connector, or replace 
the throttle valve control servo relay.

STEP 2. Perform voltage measurement at throttle 
valve control servo relay connector.

• Remove relay, and measure at relay box side.

• Voltage between terminal power supply line and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair or replace the connector, or check 

and repair harness between throttle valve 
control servo relay connector terminal 
power supply line and battery.

• Check power supply line for 

open/short circuit.

STEP 3. Perform voltage measurement at throttle 
valve control servo relay connector.

• Remove relay, and measure at relay box side.

• Ignition switch: ON

• Voltage between terminal engine control relay 

line and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the connector, or check 

and repair harness between engine control 
relay connector terminal and throttle valve 
control servo relay connector terminal.

• Check power supply line for 

open/short circuit.

STEP 4. Perform voltage measurement at 
engine-ECU connector.

• Disconnect connector, and measure at harness 

side.

• Short-circuit engine-ECU connector the terminal 

C/R to the body earth.

• Voltage between terminal C/RL and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair or replace the connector, or check 

and repair harness between throttle valve 
control servo relay connector terminal and 
engine-ECU connector terminal C/RL.

• Check earthing line for open/short 

circuit.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-96

STEP 5. Perform voltage measurement at 
engine-ECU connector.

• Disconnect connector, and measure at harness 

side.

• Short-circuit engine-ECU connector terminals 

C/R and C/RL to the body earth.

• Voltage between terminal RSB and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 6.

STEP 6. Check harness between throttle valve 
control servo relay connector terminal and 
engine-ECU connector terminal RSB.

• Check output line for open/short circuit.

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. Check harness between engine control 
relay connector terminal and throttle valve 
control servo relay connector terminal.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Repair or replace the connector, or check 

and repair harness between throttle valve 
control servo relay connector terminal and 
engine-ECU connector terminal C/RL.

• Check earthing line for damage.

NO : 

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

STEP 8. Check harness between throttle valve 
control servo relay connector terminal and 
battery.

• Check power supply line for damage.

Q:  Is the harness connector in good condition?

YES : 

Go to Step 9.

NO : 

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

STEP 9. Check harness between throttle valve 
control servo relay connector terminal and 
engine-ECU connector terminal RSB.

• Check output line for damage.

Q:  Is the harness connector in good condition?

YES : 

Go to Step 10.

NO : 

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

STEP 10. 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 
).

Code No. P1231: Trustful Check Active Stability Control (ASC) <Vehicles with ASC>

FUNCTION

• Checks for an abnormal signal of active stability 

control (ASC) via the CAN communication.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is "ON" position.

Judgment Criterion

• A torque demand signal from the active stability 

control (ASC) is abnormal.

FAIL-SAFE AND BACKUP FUNCTION

• Torque requested by active stability control (ASC) 

is ignored.

PROBABLE CAUSES

• Failed active stability control system

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

• Reconfirmation of diagnosis code.

Q: Is diagnosis code set?

 

 

 

 

 

 

 

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