Mitsubishi Outlander (2013+). Manual - part 502

DOOR

BODY

42A-28

INSPECTION PROCEDURE A-2: Central door locking system does not operate even when door lock 
switch of power window main switch operated.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

.)

OPERATION

The ETACS-ECU controls the central door locking 
system, locking or unlocking all the doors by activat-
ing the central door lock relay (built in the 
ETACS-ECU). The ETACS-ECU uses input signals 
from the door lock switch, which is incorporated in 
the power window main switch.

COMMENTS ON TROUBLE SYMPTOM

If the central door locking system does not work at 
all, a malfunction of the door lock switch (built in the 
power window main switch) or ETACS-ECU is sus-
pected.

PROBABLE CAUSES

• Malfunction of the door lock switch (built in the 

power window main switch)

• Malfunction of ETACS-ECU

• Damaged wiring harness and connectors

DIAGNOSTIC PROCEDURE

STEP 1. Central door locking system operation 
check.
Check that the central door locking system works 
normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure 1 "Central 
door locking system does not work at all 

P.42A-26

."

STEP 2. Central door lock switch check (built in 
the power window main switch).
Check that the central door lock switch works nor-
mally (Refer to Central Door Lock Switch Check 

P.42A-61

).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the power window main switch.

STEP 3. Check of short to power supply, short to 
earth, and open circuit in D-LS, D-US line 
between ETACS-ECU connector and power 
window main switch connector.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector(s) or wiring harness.

STEP 4. Retest the system.
Check that the central door locking system works 
normally.

Q: Is the check result normal?

YES  : 

No action is necessary and testing is 

complete.

NO : 

Replace ETACS-ECU.

INSPECTION PROCEDURE A-3: Door(s) or a tailgate cannot be locked or unlocked by central door 
locking system.

COMMENTS ON TROUBLE SYMPTOM

No operation of the door lock actuator or a malfunc-
tion of the tailgate lock actuator is suspected.

PROBABLE CAUSES

• Malfunction of the door lock actuator

• Malfunction of the tailgate lock actuator

• Damaged wiring harness and connectors

DOOR

BODY

42A-29

DIAGNOSIS PROCEDURE

STEP 1. Confirmation of the defective door lock 
actuator or tailgate lock actuator.

Q: Which doors or tailgate is not locked normally?

Front left door : 

Go to Step 2.

Front right door : 

Go to Step 4.

Rear left door : 

Go to Step 6.

Rear right door : 

Go to Step 8.

Tailgate <Vehicles without electric tailgate> : 

Go to 

Step 10.

Tailgate <Vehicles with electric tailgate> : 

Diagnose the tailgate. Refer to GROUP 42A 
− Tailgate 

P.42A-93

.

STEP 2. Front door lock actuator (LH) check
Check that the front door lock actuator (LH) works 
normally. Refer to Door Latch Assembly Inspection 

P.42A-47

.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the front door lock actuator (LH).

STEP 3. Check of short to power supply, short to 
earth, and open circuit in DUN, DLK1&DLK2 line 
between ETACS-ECU connector and front door 
lock actuator (LH) connector.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 4. Front door lock actuator (RH) check
Check that the front door lock actuator (RH) works 
normally. Refer to Door Latch Assembly Inspection 

P.42A-47

.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the front door lock actuator (RH).

STEP 5. Check of short to power supply, short to 
earth, and open circuit in DUL2, DLK1&DLK2 line 
between ETACS-ECU connector and front door 
lock actuator (RH) connector.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 6. Rear door lock actuator (LH) check
Check that the rear door lock actuator works nor-
mally. Refer to Door Latch Assembly Inspection 

P.42A-47

.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Replace the rear door lock actuator (LH).

STEP 7. Check of short to power supply, short to 
earth, and open circuit in DUL3&DUL4, 
DLK3&DLK4 line between ETACS-ECU connector 
and rear door lock actuator (LH) connector.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 8. Rear door lock actuator (RH) check
Check that the rear door lock actuator (RH) is in 
good condition. Refer to Door Latch Assembly 
Inspection 

P.42A-47

.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Replace the rear door lock actuator (RH).

STEP 9. Check of short to power supply, short to 
earth, and open circuit in DUL3&DUL4, 
DLK3&DLK4 line between ETACS-ECU connector 
and rear door lock actuator (RH) connector.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 10. Tailgate lock actuator check.
Check that the tailgate lock actuator is in good condi-
tion. Refer to 

P.42A-73

.

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Replace the tailgate lock actuator.

DOOR

BODY

42A-30

STEP 11. Resistance measurement at tailgate 
lock actuator connector (earth line terminal).
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between the tailgate lock 

actuator connector (earth line terminal) and body 
earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Go to Step 12.

STEP 12. Check of open circuit in earth line 
between tailgate lock actuator connector and 
body earth.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 13. Check of open circuit in GLK line 
between ETACS-ECU connector and tailgate lock 
actuator connector.

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 Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

INSPECTION PROCEDURE A-4: Selector "P" position-linked door unlock function does not operate.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

.)

OPERATION

ETACS-ECU determines whether the shift position is 
at "P" or not according to the shift position signal 
which is sent by CVT-ECU.

COMMENTS ON TROUBLE SYMPTOM

If the doors are not unlocked when the selector lever 
is shifted to the P position, a malfunction of the shift 
position signal input circuit(s) or ETACS-ECU is sus-
pected. Also, the selector "P" position-linked door 
unlock function may have been "disabled" with the 
customisation function.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of ETACS-ECU

• Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE

STEP 1. Checking central door unlocking 
operation.
Check that the central door locking system works 
normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Central Door Locking System 
Symptom Chart 

P.42A-26

.

STEP 2. Check the customisation function.
Check that "Always (P pos)" is set for "Auto door 
unlock by P position" with the customisation function.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Set "Always (P pos)" for "Auto door unlock 
by P position" with the customisation 
function (Refer to Customisation Function 

P.42A-50

).

STEP 3. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the CAN bus normal?

YES : 

Go to Step 4.

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ).

DOOR

BODY

42A-31

STEP 4. Check the M.U.T.-III Diagnosis code of 
other systems
Check that CVT sets a diagnosis code.

Q: Is the diagnosis code set?

YES : 

Diagnose CVT (Refer to GROUP 23A 

− 

Troubleshooting ).

NO : 

Go to Step 5.

STEP 5. Retest the system.
Check that shifting the selector lever to the P position 
unlocks the doors.

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 Malfunction ).

NO : 

Replace ETACS-ECU.

INSPECTION PROCEDURE A-5: Ignition "LOCK (OFF)" position-linked door unlock function does not 
operate.

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
Immobilizer System 

− How to Register Key ID 

.)

COMMENTS ON TROUBLE SYMPTOM

If a door is not unlocked when the ignition switch is 
turned to the LOCK position, a malfunction of the 
CAN bus line, ignition switch or ETACS-ECU is sus-
pected. Also, the ignition "LOCK" position-linked 
door unlock function may have been "Disabled" with 
the customisation function.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of ETACS-ECU

• Malfunction of ignition switch

• Damaged wiring harness and connectors

DIAGNOSIS PROCEDURE

STEP 1. Checking central door unlocking 
operation
Check that the central door locking system works 
normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Central Door Locking System 
Symptom Chart 

P.42A-26

.

STEP 2. Check the customisation function.
Check that "Always (Lock pos)" is set for "Auto door 
unlock by ignition LOCK position" with the customi-
sation function.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Set "Always (Lock pos)" for "Auto door 
unlock by ignition LOCK position" with the 
customisation function (Refer to 
Customisation Function 

P.42A-50

).

STEP 3. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q: Is the CAN bus normal?

YES : 

Go to Step 4.

NO : 

Repair the CAN bus line (Refer to GROUP 
54C 

− Troubleshooting ).

STEP 4. Check the ignition switch.
Check that the ignition switch works normally.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the ignition switch (Refer to GROUP 
54A 

− Ignition Switch Continuity Check ).

STEP 5. Retest the system.
Check that turning the ignition switch to the LOCK 
position unlocks tall doors.

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 Malfunction ).

NO : 

Replace the ETACS-ECU.