Mitsubishi Outlander (2013+). Manual - part 545

 

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Mitsubishi Outlander (2013+). Manual - part 545

 

 

TROUBLESHOOTING <KOS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-41

STEP 4. KOS communication test
Using M.U.T-III, perform the antenna communication 
test to check that the outside transmission antenna 
assembly (tailgate) communicates normally (Refer to 

P.42B-89

).

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Perform troubleshooting for the diagnosis 
code No. B240C (Refer to 

P.42B-11

).

STEP 5. Check of the troubles
Operate the tailgate lock release handle (lock switch) 
to check that the tailgate can be locked.

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Deal with Intermittent Malfunction ).

NO : 

Replace KOS-ECU and register the ID 
codes (Refer to 

P.42B-88

).

Inspection Procedure 10: The open switch of the tailgate lock release handle does not perform the 
unlocking operation..

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the earth circuit and the communi-
cation circuit are normal.

PROBABLE CAUSES

• Malfunction of the outside transmission antenna 

assembly (tailgate)

• Malfunction of the tailgate lock release handle 

(open switch)

• Damaged wiring harness and connectors

• Malfunction of the KOS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code
Check if any diagnosis code is set to the KOS-ECU.

Q: Is the diagnosis code set?

YES : 

 Refer to diagnosis code chart 

P.42B-11

.

NO : 

Go to Step 2.

STEP 2. Tailgate lock release handle (open 
switch) check
Check that the tailgate lock release handle (open 
switch) is normal (Refer to GROUP 42A 

− Tailgate 

Handle and Latch  <Vehicles without electric tail-
gate> or  <Vehicles with electric tailgate>).

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the tailgate lock release handle.

STEP 3. Check of short to power supply, short to 
earth, and open circuit in GTOP line between the 
KOS-ECU connector and the tailgate lock release 
handle connector.

NOTE: Before the wiring harness check, check the 
intermediate connector, and repair if necessary.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the wiring harness.

STEP 4. KOS communication test
Using M.U.T-III, perform the antenna communication 
test to check that the outside transmission antenna 
assembly (tailgate) communicates normally (Refer to 

P.42B-89

).

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Perform troubleshooting for the diagnosis 
code No. B240C (Refer to 

P.42B-11

).

STEP 5. Check of the troubles
Operate the tailgate lock release handle (open 
switch) to check that the tailgate can be opened.

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Deal with Intermittent Malfunction ).

NO : 

Replace KOS-ECU and register the ID 
codes (Refer to 

P.42B-88

).

TROUBLESHOOTING <KOS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-42

Inspection Procedure 11: Keyless entry function does not work.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the earth circuit and the communi-
cation circuit are normal.

OPERATION

The lock/unlock signal of the keyless operation key is 
sent to ETACS-ECU via KOS-ECU. Also, when 
ETACS receives signals from the all the door 
switches, ETACS-ECU judges them to activate the 
keyless entry function.

PROBABLE CAUSES

• Malfunction of CAN bus line

• Malfunction of the door switches

• Malfunction of the keyless operation key

• Damaged wiring harness and connectors

• Malfunction of the KOS-ECU

• Malfunction of ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. ETACS-ECU coding data check
(1) Use M.U.T.-III to read out the option coding 

information in ETACS-ECU (Refer to GROUP 00 

− Precautions before Service - Coding Reference 
Table ).

(2) Check if the "Keyless function" is "Enabled."

Q: Is the check result normal?

YES : 

Go to Step 2

NO : 

Operate the M.U.T.-III to set the option 
coding "keyless" to "enabled," and check 
the trouble symptom.

STEP 2. 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 3

NO : 

Repair the CAN bus line. (Refer to GROUP 
54C 

− Troubleshooting .)

STEP 3. M.U.T.-III diagnosis code
Check if any diagnosis code is set to the KOS-ECU.

Q: Is the diagnosis code set?

YES : 

Refer to diagnosis code chart .

NO : 

Go to Step 4

STEP 4. Check the power supply system
With the ignition switch in the LOCK (OFF) position, 
check if the following function operates normally:

• Hazard warning lamp

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Refer to GROUP 54A 

− Abnormality in 

ETACS-ECU Power Supply Circuit .

STEP 5. Check the operation of the central door 
locking system.
Check that the central door locking system works 
normally.

Q: Is the check result normal?

YES : 

Go to Step 6

NO : 

Refer to GROUP 42A 

− Troubleshooting .

STEP 6. M.U.T.-III data list
Check the ETACS-ECU service data relevant to the 
operation of keyless entry function.

• Turn the power supply mode of engine switch to 

OFF.

• Close the driver's door.

• Close the front passenger's doors.

• Close the RH-side rear door.

• Close the LH-side rear door.

Item No.

Item name

Normal 
condition

Item 256

Dr door ajar switch

Close

Item 257

As door ajar switch

Close

Item 258

RR door ajar switch

Close

Item 259

RL door ajar switch

Close

Item 260

Trunk/gate trunk ajar 
switch

Close

Close the tailgate.

OK: Normal conditions are displayed for all 
the items.

Q: Are the check result normal?

TROUBLESHOOTING <KOS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-43

Normal conditions are displayed for all the items. : 

Go to Step 7.

Normal condition is not displayed for item No. 256. 

Refer to GROUP 54A 

− Inspection 

Procedure 5: "Front door switch (driver’s 
side) signal is not received ."

Normal condition is not displayed for item No. 257. 

Refer to GROUP 54A 

− Inspection 

Procedure 6: "Front door switch 
(passenger’s side) signal is not received ."

Normal condition is not displayed for item No. 258. 

Refer to GROUP 54A 

− Inspection 

Procedure 7: "Rear door switch (RH) signal 
is not received ."

Normal condition is not displayed for item No. 259. 

Refer to GROUP 54A 

− Inspection 

Procedure 8: Rear door switch (LH) signal is 
not received .

Normal condition is not displayed for item No. 260. 

Refer to GROUP 54A 

− Inspection 

Procedure 9: "Tailgate latch signal is not 
received ."

STEP 7. Check with another registered keyless 
operation key.
Check that the keyless entry function can be used 
with another keyless operation key.

Q: Can the keyless entry function be used?

YES : 

Replace the keyless operation key 

concerned and register the ID codes (Refer 
to 

P.42B-88

).

NO : 

Go to Step 8

STEP 8. Check of the troubles
Replace ETACS-ECU. After the replacement, per-
form the coding, and check that the keyless entry 
function operates normally.

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction ).

NO : 

Replace KOS-ECU and register the ID 
codes (Refer to 

P.42B-88

).

Inspection Procedure 12: KOS timer lock function does not work.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the earth circuit and the communi-
cation circuit are normal.

OPERATION

After the door is unlocked using the keyless entry 
function or the door entry function, if no operation is 
performed, the door is locked when the time speci-
fied by a customisation function has elapsed. How-
ever, when an open signal of any of the doors is 
received by ETACS-ECU or when the engine switch 
power supply mode is ON, the KOS timer lock func-
tion will not be activated.

PROBABLE CAUSES

• Malfunction of ETACS-ECU

• Malfunction of the door switches

DIAGNOSIS PROCEDURE

STEP 1. Check the keyless entry function 
operation
Check that the keyless entry function operation nor-
mally.

Q: Is the check result normal?

YES : 

Go to Step 2

NO : 

Refer to Inspection Procedure 11: "Keyless 
entry function does not work 

P.42B-42

."

STEP 2. M.U.T.-III diagnosis code
Check if any diagnosis code is set to the KOS-ECU.

Q: Is the diagnosis code set?

YES : 

 Refer to diagnosis code chart 

P.42B-11

.

NO : 

Go to Step 3.

STEP 3. Check of the troubles
Check that the KOS timer lock function operates.

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points ).

NO : 

Perform troubleshooting for each door 
switch (Refer to GROUP 54A 

− ETACS − 

Troubleshooting ).

TROUBLESHOOTING <KOS-ECU>

KEYLESS OPERATION SYSTEM (KOS)

42B-44

Inspection Procedure 13: Keyless entry hazard answerback function or the room lamp answerback 
function does not work normally.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the earth circuit and the communi-
cation circuit are normal.

OPERATION

When the keyless entry function is used, the keyless 
entry hazard answerback function or room lamp 
answerback function operate as set by ETACS cus-
tomisation function (If the flashing count is set to 0 
with a customisation function, no answerback func-
tion is performed).

PROBABLE CAUSES

• Function setting error or no setting with a custom-

isation

• Malfunction of the turn signal lamp

• Malfunction of the room lamp

• Malfunction of ETACS-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the hazard warning lamp
Check that the hazard warning lamp illuminate nor-
mally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to GROUP 54A 

− Inspection 

Procedure 1: "The hazard warning lamps do 
not illuminate ."

STEP 2. Check the room lamps operation
Check that the room lamps illuminate normally.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to GROUP 54A, The front room lamp 
does not illuminate normally .

STEP 3. Check the keyless entry system 
operation
Check that the keyless entry system operation nor-
mally.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Refer to Inspection Procedure 9: "Keyless 
entry system does not work 

P.42B-42

."

STEP 4. Check the customisation
Check that any one of the followings other than 
"Lock: 0, Unlock: 0" is set for "Hazard answerback" 
with a customisation function.

• Lock:1, Unlock:2

• Lock:1, Unlock:0

• Lock:0, Unlock:2

• Lock:2, Unlock:1

• Lock:0, Unlock:1

• Lock:2, Unlock:0

NOTE: If "Lock: 0" or "Unlock: 0" is selected, no 
answerback function is performed on locking or 
unlocking.

Q: Is it set to other than "Lock: 0, Unlock: 0"?

YES : 

Go to Step 5.

NO : 

Set "Hazard answerback" to any one other 
than "Lock: 0, Unlock: 0" with a 
customisation function (Refer to 

P.42B-90

).

STEP 5. M.U.T.-III diagnosis code
Check if any diagnosis code is set to the KOS-ECU.

Q: Is the diagnosis code set?

YES : 

 Refer to 

P.42B-11

.

NO : 

Go to Step 6.

STEP 6. Check of the troubles
Check that the hazard answerback and room lamp 
answerback functions of the keyless entry operate.

Q: Is the check result normal?

YES : 

Intermittent malfunction is suspected (Refer 

to GROUP 00 

− How to Use 

Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction .)

NO : 

Replace ETACS-ECU. After the 
replacement, perform the coding.

 

 

 

 

 

 

 

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