Mitsubishi Outlander GS45X. Manual — part 1164

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-23

DIAGNOSIS

Required Special Tools:

• 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 (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 WCM (Refer to GROUP 00

− How to Perform

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 WCM and register the ID codes. (Refer to

P.42C-10

.)

NO : The procedure is complete.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link
connector

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-24

DTC B1A08: Keyless/KOS key1 performance

DTC B1A09: Keyless/KOS key2 performance

DTC B1A0A: Keyless/KOS key3 performance

DTC B1A0B: Keyless/KOS key4 performance

DTC B1A0C: Keyless key 5 performance

DTC B1A0D: Keyless key 6 performance

DTC B1A0E: Keyless key 7 performance

DTC B1A0F: Keyless key 8 performance

CAUTION

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

.

DTC SET CONDITION

The door locking/unlocking code is automatically
updated every time the doors are locked (rolling
code). WCM stores DTC B1A08, B1A09, B1A0A,
B1A0B, B1A0C, B1A0D, B1A0E, or B1A0F when it
receives wrong signal (rolling code out of synchroni-
zation) from the transmitter.

.

TECHNICAL DESCRIPTION (COMMENT)

• B1A08: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 1 (the first transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A09: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 2 (the second transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A0A: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 3 (the third transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A0B: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 4 (the fourth transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A0C: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 5 (the fifth transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A0D: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 6 (the sixth transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

• B1A0E: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 7 (the seventh transmitter registered
in WCM) greatly differs from the rolling code
stored in WCM.

• B1A0F: WCM determines that the abnormality is

present when the rolling code received from the
transmitter 8 (the eighth transmitter registered in
WCM) greatly differs from the rolling code stored
in WCM.

.

TROUBLESHOOTING HINTS

• Rolling code out of synchronization

• Malfunction of the transmitter

• Malfunction of the WCM

DIAGNOSIS

STEP 1. Synchronize the rolling code and
recheck the diagnostic trouble code.
(1) Synchronize the rolling code.

• Push the lock button or unlock button of trans-

mitter twice or more.

• If the keyless operation does not resume by

the procedure above, register the key again
(Refer to

P.42C-112

).

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

a. Push the lock button or unlock button of

transmitter.

b. Check if the diagnostic trouble code is set.

Q: Is the DTC set?

YES :

Go to Step 2.

NO :

The diagnosis is complete.

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-25

STEP 2. Check whether the diagnostic trouble
code is reset.
Replace the transmitter by which the diagnostic trou-
ble code is set with a new one, register the key
(Refer to

P.42C-89

), and recheck if the diagnostic

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

transmitter.

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

Q: Is the DTC set?

YES :

Replace WCM and register the ID codes

(Refer to

P.00-15

).

NO :

The diagnosis is complete.

Code No.B1A10 Keyless/KOS key 1 low battery

Code No.B1A11 Keyless/KOS key 2 low battery

Code No.B1A12 Keyless/KOS key 3 low battery

Code No.B1A13 Keyless/KOS key 4 low battery

Code No.B1A14 Keyless key 5 low battery

Code No.B1A15 Keyless key 6 low battery

Code No.B1A16 Keyless key 7 low battery

Code No.B1A17 Keyless key 8 low battery

CAUTION

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

.

DIAGNOSTIC FUNCTION

WCM sets the diagnostic trouble code No. B1A10,
B1A11, B1A12, B1A13, B1A14, B1A15, B1A16, or
B1A17 when it receives low battery voltage signal
from the transmitter.

.

JUDGEMENT CRITERIA

• B1A10: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 1 (the first transmitter
registered in WCM) five consecutive times.

• B1A11: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 2 (the second transmitter
registered in WCM) five consecutive times.

• B1A12: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 3 (the third transmitter
registered in WCM) five consecutive times.

• B1A13: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 4 (the fourth transmitter
registered in WCM) five consecutive times.

• B1A14: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 5 (the fifth transmitter
registered in WCM) five consecutive times.

• B1A15: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 6 (the sixth transmitter
registered in WCM) five consecutive times.

• B1A16: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 7 (the seventh transmitter
registered in WCM) five consecutive times.

• B1A17: WCM determines that the abnormality is

present when it receives low battery voltage sig-
nal from the transmitter 8 (the eighth transmitter
registered in WCM) five consecutive times.

.

PROBABLE CAUSES

• Battery failure in the transmitter

• Malfunction of the transmitter

• Malfunction of WCM

DIAGNOSIS

TSB Revision

WIRELESS CONTROL MODULE (WCM)

42C-26

DIAGNOSTIC PROCEDURE

STEP 1. Replace the battery in the transmitter
and recheck the diagnostic trouble code.
Replace the battery in the transmitter with a new
one, and recheck if the diagnostic trouble code is set.
(1) Replace the battery in the transmitter.
(2) Use the transmitter to lock/unlock the doors.
(3) Check if the diagnostic trouble code is set.

Q: Is the diagnostic trouble code set?

YES :

Go to Step 2.

NO :

The procedure is complete. (Discharged
battery)

STEP 2. Replace the transmitter and recheck the
diagnostic trouble code.
Replace the transmitter with a new one, register the
encrypted code and the keyless entry secret code
(Refer to

P.00-15

.), and recheck if the diagnostic

trouble code is set.
(1) Use the transmitter to lock/unlock the doors.
(2) Check if the diagnostic trouble code is set.

Q: Is the diagnostic trouble code set?

YES :

Replace WCM and register the ID codes.

(Refer to

P.00-15

.)

NO :

The procedure is complete.

DTC B1A24: Key ID not registered

CAUTION

• When the DTC B1A24 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

WCM sets DTC B1A24 when the encrypted code
was not registered in it.

.

TECHNICAL DESCRIPTION (COMMENT)

WCM determines that the abnormality is present, if
the ignition key's key ID is not registered in WCM
when the ignition switch is turned ON.

.

TROUBLESHOOTING HINTS

• Key ID not registered

• Malfunction of the ignition key

• Malfunction of WCM

DIAGNOSIS

Required Special Tools:

• 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 (Vehicles with

CAN communication system)