Mitsubishi Outlander GS45X. Manual — part 1126

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-83

STEP 3. Keyless operation system communication test
Check that the communication with the inside transmission
antenna assembly (rear: passenger’s side) is normal (Refer to
Antenna Test

P.42B-197

).

Antennas to be checked
Rear front passenger's side antenna (interior)

OK: Normal is displayed.

Q: Is the check result normal?

YES : Go to Step 4.
NO : Replace the inside transmission antenna assembly

(rear: passenger’s side).

STEP 4. Check whether the diagnostic trouble code is
reset.
(1) Erase the diagnostic trouble code.
(2) Turn the ignition switch from the LOCK (OFF) position to the

ON position.

(3) Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?

YES : Replace KOS-ECU and register the ID codes (Refer

to

P.42B-188

).

NO : Intermittent malfunction is suspected (Refer to

GROUP 00, How to Use Troubleshooting/Inspection
Service Points

− How to cope with Intermittent

Malfunction

P.00-15

).

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-84

DTC B2412 Antenna power voltage

CAUTION

• If diagnostic trouble code No. B2412 is set,

diagnose the CAN bus lines.

• When replacing the ECU, always check that

the communication circuit is normal.

ACA02758

INSIDE TRANSMISSION
ANTENNA ASSEMBLY
(FRONT)

Antenna Assembly Circuit

INSIDE TRANSMISSION
ANTENNA ASSEMBLY
(REAR: PASSENGER'S SIDE)

KEYLESS
OPERATION
KEY

KOS-ECU

OUTSIDE TRANSMISSION
ANTENNA ASSEMBLY
(PASSENGER'S SIDE)

OUTSIDE TRANSMISSION
ANTENNA ASSEMBLY
(DRIVER'S SIDE)

OUTSIDE TRANSMISSION
ANTENNA ASSEMBLY
(LIFTGATE)

AB

KOS-ECU

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-85

.

DIAGNOSTIC FUNCTION

If KOS-ECU detects an abnormality in power supply
of the exterior or interior antennas, KOS-ECU sets
diagnostic trouble code No. B2412.

.

JUDGMENT CRITERIA

If an abnormality in power supply of the outside or
inside transmission antenna assembly is detected
when power supply of it is turned on, KOS-ECU
determines that there is a problem.

.

PROBABLE CAUSES

• 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: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

AC901076AG

Connector: C-22

AC901075AG

Connector: C-102

AC901079 AW

Connectors: D-101, D-124

D-124

D-101

AC901080AL

Connectors: D-106, D-131

D-106

D-131

AC803008

AC

Connectors: F-14, F-17

F-14 (GR)

F-17

DIAGNOSIS

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KEYLESS OPERATION SYSTEM (KOS)

42B-86

STEP 1. Using scan tool MB991958, read CAN bus 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 CAN bus lines related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Repair the CAN bus line (Refer to GROUP 54C, CAN

bus diagnostics table

P.54C-17

).

NO : Go to Step 2.

STEP 2. Check KOS-ECU connector C-102 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is KOS-ECU connector C-102 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

.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector