Mitsubishi Outlander GS45X. Manual - part 1147

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-167

NO (Normal condition is not displayed for item No. 258.) 
: 

Refer to GROUP 54A, Inspection Procedure 8: 
ETACS-ECU does not receive any signal from the 
rear door switch (RH) 

P.54A-809

.

NO (Normal condition is not displayed for item No. 259.) 
: 

Refer to GROUP 54A, Inspection Procedure 7: 
ETACS-ECU does not receive any signal from the 
rear door switch (LH) 

P.54A-806

.

NO (Normal condition is not displayed for item No. 260.) 
: 

Refer to GROUP 54A, Inspection Procedure 9: 
ETACS-ECU does not receive any signal from the 
liftgate switch 

P.54A-811

.

NO (Normal condition is not displayed for item No. 264.) 
: 

Refer to GROUP 54A, Inspection Procedure 3: 
ETACS-ECU does not receive any signal from the key 
reminder switch. 

P.54A-792

.

STEP 5. Check KOS-ECU connector C-102 and receiver 
antenna module connector C-30 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are KOS-ECU connector C-102 and receiver antenna 

module connector C-30 in good condition?
YES : Go to Step 6.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the keyless entry function works 

normally.

STEP 6. Check the wiring harness between KOS-ECU 
connector C-102 (terminal Nos. 7, 9, 10 and 32) and 
receiver antenna module connector C-30 (terminal Nos. 12, 
3, 4 and 8). 
Q: Is the wiring harness between KOS-ECU connector 

C-102 (terminal Nos. 7, 9, 10 and 32) and receiver 
antenna module connector C-30 (terminal Nos. 12, 3, 4 
and 8) in good condition?
YES : Go to Step 7.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Check that 
the keyless entry function works normally.

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-188

).

NO :  Go to Step 8.

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-168

STEP 8. Check of the troubles
Replace ETACS-ECU. After the replacement, perform the cod-
ing, and check that the keyless entry function operates nor-
mally.
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 

P.00-15

).

NO :  Replace KOS-ECU and register the ID codes (Refer 

to 

P.42B-188

).

Inspection Procedure 13: KOS timer lock function does not work.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the ground circuit and the com-
munication circuit are normal.

.

OPERATION

After the door is unlocked with the keyless entry 
function, if no operation is performed, the door is 
locked when the time specified by a customization 
function has elapsed. However, an open signal from 
any door, key reminder switch OFF (with the key 
inserted) signal, or ignition push switch ON signal 
has been input to ETACS, the KOS timer will not 
operate.

.

PROBABLE CAUSES

• Malfunction of ETACS-ECU

• Malfunction of the door switches

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-169

STEP 1. Using scan tool MB991958, read the diagnostic 
trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect 

scan tool (M.U.T.-III) 

P.42B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the KOS-ECU related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the KOS-ECU. Refer to 

P.42B-35

.

NO :  Go to Step 2.

STEP 2. Retest the system.
Check that the KOS timer lock function operates.
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 

P.00-15

).

NO :  Perform troubleshooting for each door switch (Refer 

to GROUP 54A, 

P.54A-786

Input signal chart ).

Inspection Procedure 14: The dome light, the turn-signal lights and the horn do not operate through 
the answerback function.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the ground circuit and the com-
munication circuit are normal.

.

OPERATION

When the keyless entry function is used, the keyless 
entry hazard answerback function, dome light or 
horn answerback function operate as set by ETACS 
customization function. (If the flashing count is set to 
0 with a customization function, no answerback func-
tion is performed.). If the theft alarm is defective, the 
keyless entry hazard answerback function may not 
operate normally.

.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-170

PROBABLE CAUSES

• Function setting error or no setting with a custom-

ization

• Malfunction of the turn signal light

• Malfunction of the dome light

• Malfunction of the horn

• Malfunction of the theft alarm sensor

• Malfunction of the theft alarm siren

• Malfunction of ETACS-ECU

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

STEP 1. Verify the hazard warning lights.
Check that the hazard warning lights illuminate normally.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Refer to GROUP 54A, Inspection Procedure 1: The 

Hazard Warning lights does not Illuminate 

P.54A-309

.

STEP 2. Verify the dome light.
Check that the dome light illuminate normally.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Refer to GROUP 54A, Trouble Symptom Chart 

P.54A-308

.

STEP 3. Verify the horn.
Check that the horn normally.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Replace the horn (Refer to GROUP 54A, Horn 

P.54A-312

).

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

• Lock:1, Unlock:2

• Lock:1, Unlock:0

• Lock:0, Unlock:2

• Lock:2, Unlock:1

• Lock:2, Unlock:0

• Lock:0, Unlock:1

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Set "Hazard answerback" to any one other than 

"Lock: 0, Unlock: 0" with a customization function 
(Refer to 

P.54A-821

).