Mitsubishi Outlander GS45X. Manual — part 1145

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-159

Inspection Procedure 11: The open switch of the liftgate lock release handle does not perform the
unlocking operation.

CAUTION

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

ACA02762

KOS-ECU

OPEN
SWITCH

LOCK
SWITCH

LIFTGATE LOCK
RELEASE HANDLE

Liftgate Lock Release Handle Circuit

AB

BLA

CK

BLA

CK

BLA

CK-

YELLO

W

GRA

Y

BR

O

W

N

B

R

O

WN

BR

O

W

N

GRA

Y

GRA

Y

AC901075AF

Connectors: C-32, C-102

C-32

C-102

AC901080AM

Connector: D-12

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-160

.

PROBABLE CAUSES

• Malfunction of the outside transmission antenna

assembly (liftgate)

• Malfunction of the liftgate lock release handle

(open switch)

• Damaged wiring harness and connectors

• Malfunction of the KOS-ECU

DIAGNOSIS

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 Diagnostic Trouble

Code Chart

P.42B-35

.

NO : Go to Step 2.

AC901375AC

Connector: F-09

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-161

STEP 2. Check KOS-ECU connector C-102 and liftgate lock
release handle connector F-09 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are KOS-ECU connector C-102 and liftgate lock release

handle connector F-09 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 liftgate lock release handle

works normally.

STEP 3. Check the wiring harness between KOS-ECU
connector C-102 (terminal No. 28) and liftgate lock release
handle connector F-09 (terminal No. 1).

• Check the signal wires for open circuit.

NOTE: Also check intermediate connectors C-32, D-12 for
loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connectors C-32, D-12 is
damaged, repair or replace the damaged component(s) as
described in GROUP 00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between KOS-ECU connector

C-102 (terminal No. 28) and liftgate lock release handle
connector F-09 (terminal No. 1) in good condition?
YES : Go to Step 4.
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 liftgate lock release handle works normally.

STEP 4. Liftgate lock release handle check
(1) Remove the liftgate lock release handle (Refer to GROUP

42A, Liftgate Handle and Latch

P.42A-174

).

(2) Check continuity when the liftgate lock release handle is

operated to "ON" or "OFF" position.

Q: Is the liftgate lock release handle normal?

YES : Go to Step 5.
NO : Replace the liftgate lock release handle. Check that

the liftgate lock release handle works normally.

Switch
position

Terminal
number

Normal value

Push (open)

1

− 2

Continuity
exists (2

Ω or

less)

Release

1

− 2

No continuity

ACA00837AF

Open switch

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-162

STEP 5. KOS communication test
Using scan tool (M.U.T-III), perform the antenna communica-
tion test to check that the outside transmission antenna assem-
bly (liftgate) 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. B240C (Refer to

P.42B-35

).

STEP 6. Check of the troubles
Operate the liftgate lock release handle and check that the lift-
gate 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

P.00-15

).

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

to

P.42B-188

).

Inspection Procedure 12: Keyless entry system does not work.

CAUTION

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

ACA02775

RECEIVER
ANTENNA
MODULE

KEYLESS
ENTRY
RECEIVER

KOS-ECU

VIOLET

RED

PINK

BR

O

W

N

-WHITE

RED- WHITE

KEYLESS
OPERATION
KEY

Receiver Antenna Module Circuit

AB