Mitsubishi Outlander GS45X. Manual — part 1115

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-39

STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(1) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(2) Check if DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

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

to

P.42B-15

.) After registering the ID codes, go to

Step 6.

NO : The trouble can be an intermittent malfunction (Refer

to GROUP 00

− How to use

Troubleshooting/inspection Service Points

− How to

Cope with Intermittent Malfunction

P.00-15

).

STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.
(1) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(2) Check if DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the engine control module and record the

VIN (Refer to GROUP 00 - How To Perform Vehicle
Identification Number (VIN) Writing

P.00-40

). Then go

to Step 6.

NO : The procedure is complete.

STEP 6. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
(1) Turn the ignition switch from "LOCK" (OFF) position to "ON"

position.

(2) Check if DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO : The procedure is complete.

DTC B1761: VIN code not programmed

CAUTION

• When DTC No. B1761 is set, be sure to diag-

nose the CAN bus line.

• When replacing the ECU, always check that

the communication circuit is normal.

.

DTC SET CONDITION

KOS-ECU sets DTC B1761 when no VIN is recorded
in it.

.

TECHNICAL DESCRIPTION (COMMENT)

KOS-ECU determines that the abnormality is present
when no VIN is recorded in it.

.

TROUBLESHOOTING HINTS

• VIN not programmed

• Malfunction of the KOS-ECU

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-40

DIAGNOSIS

Required Special Tools:

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

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

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with

CAN communication system)

STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.

CAUTION

To prevent damage to scan tool (MB991958), always turn
the ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool (MB991958).
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?

YES : Go to Step 2.
NO : Repair the CAN bus line. (Refer to GROUP 54C,

Diagnosis

P.54C-17

).

STEP 2. Register the VIN and recheck the diagnostic
trouble code.
Register VIN in KOS-ECU (Refer to GROUP 00

− How to Per-

form Vehicle Identification Number (VIN) Writing

P.00-40

) and

recheck if the DTC is set.
(1) Turn the ignition switch from the "LOCK" (OFF) position to

the "ON" position.

(2) Check if DTC is set.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

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

to

P.42B-15

.)

NO : The procedure is complete.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-41

DTC B1A08: Keyless/KOS key1 performance

DTC B1A09: Keyless/KOS key2 performance

DTC B1A0A: Keyless/KOS key3 performance

DTC B1A0B: Keyless/KOS key4 performance

CAUTION

When replacing the ECU, always check that the
communication circuit is normal.

.

DTC SET CONDITION

The mechanism which automatically changes a code
for lock/unlock each time a lock operation is per-
formed is referred to as a rolling code. If KOS-ECU
receives wrong signal (out of synchronization of a
rolling code) from the keyless operation key,
KOS-ECU memorizes DTC B1A08, B1A09, B1A0A
or B1A0B.

.

TECHNICAL DESCRIPTION (COMMENT)

• B1A08: If the difference between the rolling code

for the keyless operation key 1 (the first keyless
operation key registered with KOS-ECU) and that
memorized by KOS-ECU is large, it is judged as
abnormal.

• B1A09: If the difference between the rolling code

for the keyless operation key 2 (the second key-
less operation key registered with KOS-ECU) and
that memorized by KOS-ECU is large, it is judged
as abnormal.

• B1A0A: If the difference between the rolling code

for the keyless operation key 3 (the third keyless
operation key registered with KOS-ECU) and that
memorized by KOS-ECU is large, it is judged as
abnormal.

• B1A0B: If the difference between the rolling code

for the keyless operation key 4 (the fourth keyless
operation key registered with KOS-ECU) and that
memorized by KOS-ECU is large, it is judged as
abnormal.

.

TROUBLESHOOTING HINTS

• Rolling code out of synchronization

• Malfunction of the keyless operation key

• Malfunction of the KOS-ECU

DIAGNOSIS

STEP 1. Synchronize the rolling code and
recheck the diagnostic trouble code.
Synchronize the rolling codes, and check whether
the DTC is reset.
(1) Synchronize the rolling code.

• Push the lock button or unlock button of key-

less operation key twice or more.

• If the keyless operation does not resume by

the procedure above, register the key again
(Refer to ID codes registration procedure

P.42B-188

).

(2) Recheck if the diagnostic trouble code is set.

a. Push the lock button or unlock button of

keyless operation key.

b. Check if the diagnostic trouble code is set.

Q: Is the DTC set?

YES :

Go to Step 2.

NO :

The diagnosis is complete.

STEP 2. Check whether the diagnostic trouble
code is reset.
Replace the keyless operation key by which the diag-
nostic trouble code is set with a new one, register the
key (Refer to ID codes registration procedure

P.42B-188

), and recheck if the diagnostic trouble

code is set.
(1) Push the lock button or unlock button of keyless

operation key.

(2) Check if the diagnostic trouble code is set.

Q: Is the DTC set?

YES :

Replace KOS-ECU and register the ID

codes (Refer to ID codes registration
judgment table

P.42B-35

).

NO :

The diagnosis is complete.

DIAGNOSIS

TSB Revision

KEYLESS OPERATION SYSTEM (KOS)

42B-42

DTC B1A10 Keyless/KOS key 1 low battery

DTC B1A11 Keyless/KOS key 2 low battery

DTC B1A12 Keyless/KOS key 3 low battery

DTC B1A13 Keyless/KOS key 4 low battery

CAUTION

When replacing the ECU, always check that the
communication circuit is normal.

.

DTC SET CONDITION

If KOS-ECU receives the keyless operation key low
battery voltage signal, KOS-ECU sets the DTC
B1A10, B1A11, B1A12, or B1A13.

.

TECHNICAL DESCRIPTION (COMMENT)

• B1A10: If KOS-ECU receives the keyless opera-

tion key 1 (the first keyless operation key regis-
tered with KOS-ECU) low battery voltage signal
in five consecutive times, it is judged as abnor-
mal.

• B1A11: If KOS-ECU receives the keyless opera-

tion key 2 (the second keyless operation key reg-
istered with KOS-ECU) low battery voltage signal
in five consecutive times, it is judged as abnor-
mal.

• B1A12: If KOS-ECU receives the keyless opera-

tion key 3 (the third keyless operation key regis-
tered with KOS-ECU) low battery voltage signal
in five consecutive times, it is judged as abnor-
mal.

• B1A13: If KOS-ECU receives the keyless opera-

tion key 4 (the fourth keyless operation key regis-
tered with KOS-ECU) low battery voltage signal
in five consecutive times, it is judged as abnor-
mal.

.

TROUBLESHOOTING HINTS

• Malfunction of the keyless operation key battery

• Malfunction of the keyless operation key

• Malfunction of KOS-ECU

DIAGNOSIS

STEP 1. Replace the battery in the keyless
operation key and recheck the diagnostic trouble
code.
Replace the battery of the keyless operation key for
which the DTC is set, and check whether the DTC is
reset.
(1) Replace the battery of the keyless operation key

for which the DTC is set.

(2) Erase the DTC.
(3) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(4) Lock or unlock the keyless operation key.
(5) Check if the DTC is set.

Q: Is the DTC set?

YES :

Go to Step 2.

NO :

The procedure is complete. (Discharged
battery)

STEP 2. Replace the keyless operation key and
recheck the diagnostic trouble code.
Replace the keyless operation key for which the DTC
is set with a new one, register the encrypted code
and keyless operation key ID (refer to

P.42B-15

),

and check whether the DTC is reset.
(1) Erase the DTC.
(2) Turn the ignition switch from the LOCK (OFF)

position to the ON position.

(3) Check if the DTC is set.

Q: Is the DTC set?

YES :

Replace KOS-ECU and register the ID

codes. (Refer to

P.42B-15

.)

NO :

The procedure is complete.