Mitsubishi Outlander GS45X. Manual — part 1122
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-67
.
DTC SET CONDITION
When the ignition push switch is pressed, the steer-
ing lock unit communicates with KOS-ECU to unlock
the IG knob. If the steering lock unit communication
error (no response) occurs at this time, the DTC is
set.
.
TECHNICAL DESCRIPTION (COMMENT)
When the IG knob unlock communication is per-
formed by pressing the ignition push switch, if the
steering lock unit communication error (no response)
occurs, the steering lock unit is judged as abnormal.
.
TROUBLESHOOTING HINTS
• Malfunction of the key reminder switch (inte-
grated into the steering lock unit)
• Wiring harness or connector failure of CAN bus
line
• Malfunction of the 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)
AC702145
Connector: C-102
AB
AC702217 AB
Connector: C-211
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-68
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
−
).
STEP 2. Check key reminder switch connector C-211 and
KOS-ECU connector C-102 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is the key reminder switch connector C-211 and
KOS-ECU connector C-102 in good condition?
YES : Go to Step 3.
NO : Repair the defective connector.
STEP 3. Check the wiring harness between the key
reminder switch connector C-211 (terminal No. 12, 9, 11)
and the KOS-ECU connector C-102 (terminal No. 4, 5, 31).
• Check the signal lines for open circuit and short circuit.
Q: Is the wiring harness between key reminder switch
connector C-211 (terminal No. 12, 9, 11) and the
KOS-ECU connector C-102 (terminal No. 4, 5, 31) in
good condition?
YES : Go to Step 4.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary.
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-69
STEP 4. Replace the key reminder switch, and check
whether the diagnostic trouble code 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
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
DTC B240A DR side antenna(outdoor) open
CAUTION
When replacing the ECU, always check that the
communication circuit is normal.
ACA02755
KOS-ECU
KEYLESS
OPERATION
KEY
OUTSIDE TRANSMISSION
ANTENNA ASSEMBLY
(DRIVER'S SIDE)
SKY BLUE
SKY BLUE
SKY BLUE
RED- BLA
CK
RED- BLA
CK
RED- BLA
CK
RED- YELLO
W
RED-YELLO
W
Outside Transmission Antenna assembly (Driver's Side) Circuit
AB
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-70
.
DIAGNOSTIC FUNCTION
If an open circuit is detected in the outside transmis-
sion antenna assembly (driver's side), the diagnostic
trouble code is set.
.
JUDGMENT CRITERIA
When the ignition push switch is pressed, or when
the antenna open circuit detection request is
received from the diagnosis function, the failure is
detected.
.
PROBABLE CAUSES
• Malfunction of the outside transmission antenna
assembly (driver's side)
• Malfunction of the KOS-ECU
• Damaged wiring harness and connectors
DIAGNOSTIC PROCEDURE
STEP 1. Check KOS-ECU connector C-102 and outside
transmission antenna assembly (driver's side) connector
D-131 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are KOS-ECU connector C-102 and outside
transmission antenna assembly (driver's side)
connector D-131 in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
AC901076AG
Connector: C-22
AC901075AF
Connectors: C-32, C-102
C-32
C-102
AC901080AJ
Connector: D-131
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