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
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,
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
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,
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
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
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