Mitsubishi Outlander XL. Manual - part 771

(1)

Turn the ignition switch from the "LOCK" (OFF) position to
the "ON" position.

(2)

Check if the DTC is set.

Q:Is the diagnostic trouble code set?

YES:

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

to P.42B-12.)

NO:

 The procedure is complete.

DTC B1A25: Key ID unmatched

M14209100090USA0000010000

DTC SET CONDITION
KOS-ECU  sets  the  DTC  B1A25  when  the  received
key ID is different from the one registered in it.

TECHNICAL DESCRIPTION (COMMENT)
KOS-ECU determines that the abnormality is present,
if  the  transponder  ID  does  not  match  the  one
registered in it when the ignition switch is turned ON.

TROUBLESHOOTING HINTS

｠

Malfunction of the emergency key

｠

Accessory key not registered

｠

Accessory KOS-ECU not registered

｠

Key is registered to another vehicle

｠

Malfunction of KOS-ECU

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)

KEYLESS OPERATION SYSTEM (KOS)

42B-27

DIAGNOSIS

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

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

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 54D,

Diagnosis P.54D-17).

STEP 2. Register the key ID and recheck the diagnostic
trouble code.
Register the key ID of the emergency key by which the DTC is
set (refer to P.42B-163), and recheck if the DTC is set.

(1)

Turn the ignition switch from the "LOCK" (OFF) position to
the "ON" position.

(2)

Check if the DTC is set.

Q:Is the DTC set?

YES:

 Go to Step 3.

NO:

 The procedure is complete.

STEP 3. Replace the emergency key and recheck the
diagnostric trouble code.
Replace the emergency key for which the DTC is set with a new
one,  register  the  key  ID  and  keyless  operation  key  ID  (refer
to P.42B-12), and check whether the DTC is reset.

(1)

Turn the ignition switch from the "LOCK" (OFF) position to
the "ON" position.

(2)

Check if the DTC is set.

Q:Is the DTC set?

YES:

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

to P.42B-12.)

NO:

 The procedure is complete.

42B-28

KEYLESS OPERATION SYSTEM (KOS)

DIAGNOSIS

DTC B1A28: Engine control module authenticate error

M14209100091USA0000010000

｠

When the DTC B1A28 is set, be sure to diagnose
the CAN bus line.

｠

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

DTC SET CONDITION
If  the  key  certification  result  by  KOS-ECU  does  not
match  with  the  engine  control  module  status,  KOS-
ECU sets the DTC B1A28.

TECHNICAL DESCRIPTION (COMMENT)
KOS-ECU determines that the abnormality is present,
if  the  key  certification  result  and  the  engine  control

module  status  do  not  match  after  the  engine  start
permission communication is completed.

TROUBLESHOOTING HINTS

｠

Malfunction of KOS-ECU

｠

Engine control module malfunction

｠

VIN registered in engine control module unmatched

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.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

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 54D,

Diagnosis P.54D-17).

KEYLESS OPERATION SYSTEM (KOS)

42B-29

DIAGNOSIS

STEP 2. Check the VIN registered in the engine control
module and the vehicle's VIN.
Check if VIN registered in the engine contyrol module matches
with the vehicle's VIN.

Q:Do VIN registered in the engine control module and the

vehicle's VIN match?

YES:

 Go to Step 3.

NO:

 Replace the engine control module and record the VIN.

(Refer to GROUP 00 - How To Perform Vehicle Identification
Number (VIN) Writing P.00-26.) After registering the VIN,
go to Step 3.

STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the KOS-ECU.

(1)

Turn the ignition switch from the "LOCK" (OFF) position to
the "ON" position.

(2)

Check if the DTC is set.

Q:Is the DTC set?

YES:

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

to P.42B-12.)

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).

DTC B1A35: Transponder read error

M14209100092USA0000010000

｠

When the DTC B1A35 is set, be sure to diagnose
the CAN bus line.

｠

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

DTC SET CONDITION
If  no  transponder  data  can  be  received,  KOS-ECU
sets the DTC B1A35.

TECHNICAL DESCRIPTION (COMMENT)
KOS-ECU determines that the abnormality is present,
if it cannot receive the key ID for the emergency key
when the ignition switch is turned ON.

TROUBLESHOOTING HINTS

｠

Malfunction of the emergency key

｠

Interference of the key ID

｠

Malfunction of KOS-ECU

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

42B-30

KEYLESS OPERATION SYSTEM (KOS)

DIAGNOSIS