Mitsubishi Outlander GS45X. Manual — part 1142

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-147

STEP 3. lock/unlock switch (front door: LH) check.
(1) Remove the door outside handle base (Refer to GROUP

42A, Door Handle and Latch

P.42A-153

).

(2) Check continuity when the lock/unlock switch (front door:

LH) is operated to "ON" or "OFF" position.

Q: Is the lock/unlock switch (front: LH) normal?

YES : Go to Step 4.
NO : Replace the door outside handle base. Check that the

driver’s door lock/unlock switch works normally.

STEP 4. Check the wiring harness between KOS-ECU
connector C-102 (terminal No. 21) and lock/unlock switch
(front door: LH) connector E-23 (terminal No. 1), and
lock/unlock switch (front door: LH) connector E-23
(terminal No. 2) and ground.
NOTE: Also check intermediate connector C-126 and C-127 for
loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connector C-126 and
C-127 is damaged, repair or replace the damaged compo-
nent(s) as described in GROUP 00E, Harness Connector
Inspection

P.00E-2

.

Q: Are the wiring harness between KOS-ECU connector

C-102 (terminal No. 21) and lock/unlock switch (front
door: LH) connector E-23 (terminal No. 1), and
lock/unlock switch (front door: LH) connector E-23
(terminal No. 2) and ground in good condition?
YES : Go to Step 5.
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 driver’s door lock/unlock switch works normally.

STEP 5. KOS communication test
Using scan tool (M.U.T-III), perform the antenna communica-
tion test to check that the exterior transmitter antenna (driver's
side) communicates normally (Refer to

P.42B-197

).

Q: Is the check result normal?

YES : Go to Step 6.
NO : Perform troubleshooting for the diagnostic trouble

code No. B240A (Refer to

P.42B-35

).

Switch
position

Terminal
number

Normal value

ON

1

− 2

Continuity
exists (2

Ω or

less)

OFF

1

− 2

Open circuit

AC506541AH

Lock/unlock switch

Door outside
handle base

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-148

STEP 6. Check of the troubles.
Operate the lock/unlock switch (front door: LH) and check that
the door and liftgate 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 cope with intermittent

malfunctions

P.00-15

).

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

to

P.42B-188

).

Inspection Procedure 8: Front passenger's door lock/unlock switch does not work.

CAUTION

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

ACA02774 AB

Lock/unlock switch (Front Door: RH) Circuit

LOCK/UNLOCK SWITCH
(FRONT DOOR: RH)

KOS-ECU

AC901075AG

Connector: C-102

AC901076AI

Connectors: C-112, C-113

C-113 (BR)

C-112

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-149

.

PROBABLE CAUSES

• Malfunction of the exterior transmitter antenna

assembly (front passenger's side)

• Malfunction of the lock/unlock switch (front door:

RH)

• Damaged wiring harness and connectors

• Malfunction of the KOS-ECU

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

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

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

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.

AC702239

Connector: E-08

E-08 (GR)

AD

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-150

STEP 2. Check KOS-ECU connector C-102 and lock/unlock
switch (front door: RH) connector E-08 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Are KOS-ECU connector C-102 and lock/unlock switch

(front door: RH) connector E-08 in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. Check that the front passenger’s door

lock/unlock switch works normally.

STEP 3. Lock/unlock switch (front door: RH) check.
(1) Remove the door outside handle base (Refer to GROUP

42A, Door Handle and Latch

P.42A-153

).

(2) Check continuity when the lock/unlock switch (front door:

RH) is operated to "ON" or "OFF" position.

Q: Is the lock/unlock switch (front: RH) normal?

YES : Go to Step 4.
NO : Replace the door outside handle base. Check that the

front passenger’s door lock/unlock switch works
normally.

Switch
position

Terminal
number

Normal value

ON

1

− 2

Continuity
exists (2

Ω or

less)

OFF

1

− 2

Open circuit

AC506541AH

Lock/unlock switch

Door outside
handle base