Mitsubishi Outlander (2013+). Manual - part 312

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-129

DIAGNOSIS PROCEDURE

STEP 1. Check battery.

• Check battery (Refer to GROUP 54A − Battery − 

On-vehicle Service 

− Battery Test ).

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the battery.

STEP 2. M.U.T.-III data list

• Item 79: Cranking signal

OK: 

ON (ignition switch: "ST")
OFF (ignition switch: "ON")

Q: Is the check result normal?

YES : 

Go to Step 15.

NO : 

Go to Step 3.

STEP 3. Connector check: engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair or replace the connector.

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

• Disconnect connector, and measure at harness 

side.

• Ignition switch: "ST"

• Voltage between terminal STOE and body earth.

OK: System voltage

Q: Is the check result normal?

YES  : 

Go to Step 10 <Vehicles without KOS>.

YES  : 

Go to Step 11 <Vehicles with KOS>.

NO : 

Go to Step 5.

STEP 5. Connector check: ETACS-ECU 
connectors

Q: Are the check results normal?

YES : 

Go to Step 6.

NO : 

Repair or replace the connector.

STEP 6. Perform voltage measurement at 
ETACS-ECU connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: "ST"

• Voltage between terminal STOE and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 9.

NO  : 

Go to Step 7 <Vehicles without KOS>.

NO  : 

Go to Step 8 <Vehicles with KOS>.

STEP 7. Check ignition switch itself.

• Ignition switch connector check.

• Check ignition switch itself (Refer to GROUP 54A 

− Ignition Switch − Inspection − Ignition Switch 
Check ).

Q: Is the check result normal?

YES : 

Repair or replace the connector, or check 

and repair the harness between ignition 
switch connector terminal and ETACS-ECU 
connector terminal ST.

• Check power supply line for 

open/short circuit.

NO : 

Replace the ignition switch.

STEP 8. Check harness between OSS-ECU 
connector terminal STO and ETACS-ECU 
connector terminal ST.

• Check power supply line for open/short circuit.

Q: Is the check result normal?

YES : 

Perform troubleshooting of OSS System 

(Refer to GROUP 42B 

− Troubleshooting − 

Trouble Symptom Chart ).

NO : 

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

STEP 9. Continuity check on ETACS-ECU 
connectors

• Disconnect connectors, and measure at 

ETACS-ECU side.

• Continuity check between terminal ST and 

STOE.

OK: Continuity

Q: Is the check result normal?

YES : 

Check and repair the harness between 

ETACS-ECU connector terminal STOE and 
engine-ECU connector terminal STOE.

• Check power supply line for 

open/short circuit.

NO : 

Replace the ETACS-ECU.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-130

STEP 10. Check harness between ignition switch 
connector terminal and ETACS-ECU connector 
terminal ST.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

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

STEP 11. Check harness between OSS-ECU 
connector terminal STO and ETACS-ECU 
connector terminal ST.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

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

STEP 12. Continuity check on ETACS-ECU 
connectors

• Disconnect connectors, and measure at 

ETACS-ECU side.

• Continuity check between terminal ST and 

STOE.

OK: Continuity

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Replace the ETACS-ECU.

STEP 13. Check harness between ETACS-ECU 
connector terminal STOE and engine-ECU 
connector terminal STOE.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 14.

NO : 

Repair the damaged harness wire.

STEP 14. M.U.T.-III data list

• Item 79: Cranking signal

OK: 

ON (ignition switch: "ST")
OFF (ignition switch: "ON")

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 15. Check starter relay itself.

• Starter relay connector check.

• Check starter relay itself (Refer to GROUP 16 − 

Starting System 

− On-vehicle Service − Starter 

Relay Continuity Check ).

Q: Is the check result normal?

YES : 

Go to Step 16.

NO : 

Repair or replace the connector, or replace 
the starter relay.

STEP 16. Perform resistance measurement at 
starter relay connector.

• Remove relay, and measure at relay box side.

• Resistance between terminal earth line and body 

earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 17.

NO : 

Check and repair harness between starter 

relay connector terminal earth line and body 
earth.

• Check earthing line for open circuit 

and damage.

STEP 17. Perform voltage measurement at starter 
relay connector.

• Remove relay, and measure at relay box side.

• Transmission: P or N range

• Ignition switch: "ST"

• Voltage between inhibitor switch connector termi-

nal, its terminal line and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 23.

NO : 

Go to Step 18.

STEP 18. Check inhibitor switch

• Inhibitor switch connector check.

• Check inhibitor switch (Refer to GROUP 23A − 

On-vehicle Service ).

Q: Is the check result normal?

YES : 

Go to Step 19.

NO : 

Repair or replace the connector, or replace 
the inhibitor switch.

STEP 19. Check harness between inhibitor 
switch connector terminal and starter relay 
connector terminal.

• Check power supply line for open/short circuit.

Q: Is the check result normal?

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-131

YES : 

Go to Step 20.

NO : 

Repair the damaged harness wire.

STEP 20. Check harness between engine-ECU 
connector terminal STRL and inhibitor switch 
connector terminal.

• Check power supply line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 21.

NO : 

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

STEP 21. Check harness between engine-ECU 
connector terminal NTSW and starter relay 
connector terminal.

• Check output line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 22.

NO : 

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

STEP 22. M.U.T.-III data list

• Item 102: Starter relay

OK: 

ON (ignition switch: "ST")
OFF (ignition switch: "ON")

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 23. Perform voltage measurement at starter 
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 24.

NO : 

Check and repair harness between battery 

and starter relay connector terminal.

• Check power supply line for 

open/short circuit.

STEP 24. Perform voltage measurement at starter 
connector.

• Disconnect connector, and measure at harness 

side.

• Transmission: P or N range

• Ignition switch: "ST"

• Voltage between terminal power supply line and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 29.

NO : 

Go to Step 25.

STEP 25. Check harness between starter relay 
connector terminal and starter connector 
terminal.

• Check output line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 26.

NO : 

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

STEP 26. Check inhibitor switch

• Check inhibitor switch (Refer to GROUP 23A − 

On-vehicle Service ).

Q: Is the check result normal?

YES : 

Go to Step 27.

NO : 

Repair or replace the connector, or replace 
the inhibitor switch.

STEP 27. Check harness between inhibitor 
switch connector terminal and starter relay 
connector terminal.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 28.

NO : 

Repair the damaged harness wire.

STEP 28. Connector check: engine-ECU 
connector

Q: Is the check result normal?

YES : 

Check intermediate connector, and repair if 

necessary. If intermediate connector is 
normal, check and repair harness between 
engine-ECU connector terminal STRL and 
inhibitor switch connector terminal.

• Check power supply line for damage.

NO : 

Repair or replace the connector.

TROUBLESHOOTING

MULTIPOINT FUEL INJECTION (MPI)

13A-132

STEP 29. Check harness between battery and 
starter relay connector terminal.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 30.

NO : 

Repair the damaged harness wire.

STEP 30. Check harness between starter relay 
connector terminal and starter connector 
terminal.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 31.

NO : 

Repair the damaged harness wire.

STEP 31. Perform voltage measurement at starter 
terminal.

• Disconnect terminal, and measure at harness 

side.

• Voltage between terminal power supply line and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 32.

NO : 

Repair or replace the terminal, or check and 

repair harness between battery and starter 
terminal.

• Check power supply line for 

open/short circuit.

STEP 32. Check harness between battery and 
starter terminal.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Replace the starter.

NO : 

Repair the damaged harness wire.

Inspection Procedure 5: Starting Impossible (starter operative but no initial combustion)

COMMENTS ON TROUBLE SYMPTOM

• The failure could possibly be caused by the failed 

ignition circuit, defective fuel feed and so on.

PROBABLE CAUSES

• Failed battery

• Timing chain broken

• Contamination around the throttle valve

• Failed ignition system

• Failed fuel system

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check battery.

• Check battery (Refer to GROUP 54A − Battery − 

On-vehicle Service 

− Battery Test ).

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Replace the battery.

STEP 2. M.U.T.-III diagnosis code

Q: Is diagnosis code set?

YES : 

Inspection chart for diagnosis code (Refer 

to 

P.13A-23

).

NO : 

Go to Step 3.

STEP 3. M.U.T.-III actuator test

• Item 9: Fuel pump

OK: Operating sound of fuel pump can be 
heard

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Check Inspection Procedure 

− fuel pump 

system (Refer to 

P.13A-149

).

STEP 4. Check timing chain for breakage.

• Engine: Cranking

OK: Camshaft rotates

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the timing chain.

STEP 5. Check throttle body (throttle valve 
portion) contamination.

Q: Is the check result normal?