Mitsubishi Outlander GS45X. Manual — part 1143
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-151
STEP 4. Check the wiring harness between KOS-ECU
connector C-102 (terminal No. 23) and lock/unlock switch
(front door: RH) connector E-08 (terminal No. 1), and
lock/unlock switch (front door: RH) connector E-08
(terminal No. 2) and ground.
• Check the signal and ground wires for open circuit.
NOTE: Also check intermediate connector C-112 and C-113 for
loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connector C-112 and
C-113 is damaged, repair or replace the damaged compo-
nent(s) as described in GROUP 00E, Harness Connector
Inspection
Q: Are the wiring harness between KOS-ECU connector
C-102 (terminal No. 23) and lock/unlock switch (front
door: RH) connector E-08 (terminal No. 1), and
lock/unlock switch (front door: RH) connector E-08
(terminal No. 2) and ground in good condition?
YES : Go to Step 5.
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. Check that
the front passenger’s door lock/unlock switch works
normally.
STEP 5. KOS communication test.
Using scan tool (M.U.T.-III), perform the antenna communica-
tion test to check that the exterior transmitter antenna (front
passenger's door) communicates normally (Refer to
).
Q: Is the check result normal?
YES : Go to Step 6.
NO : Perform troubleshooting for the diagnostic trouble
code No. B240B (Refer to
).
STEP 6. Check of the troubles.
Operate the lock/unlock switch (front passenger’s side) to
check that the door can be locked.
Q: Is the check result normal?
YES : Intermittent malfunction is suspected. (Refer to
GROUP 00, How to Use Troubleshooting/Inspection
Service Points
− How to cope with intermittent
malfunctions
).
NO : Replace KOS-ECU and register the ID codes (Refer
to
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-152
Inspection Procedure 9: The lock switch and open switch of the liftgate lock release handle do not
work.
CAUTION
Before replacing the ECU, ensure that the power
supply circuit, the ground circuit and the com-
munication circuit are normal.
.
PROBABLE CAUSES
• Malfunction of the outside transmission antenna
assembly (liftgate)
• Malfunction of the liftgate lock release handle
• Damaged wiring harness and connectors
• Malfunction of the KOS-ECU
ACA02762
KOS-ECU
OPEN
SWITCH
LOCK
SWITCH
LIFTGATE LOCK
RELEASE HANDLE
Liftgate Lock Release Handle Circuit
AB
BLA
CK
BLA
CK
BLA
CK-
YELLO
W
GRA
Y
BR
O
W
N
B
R
O
WN
BR
O
W
N
GRA
Y
GRA
Y
AC901375AC
Connector: F-09
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-153
DIAGNOSIS
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect
scan tool (M.U.T.-III)
(2) Turn the ignition switch to the "ON" position.
(3) Check whether the KOS-ECU related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Diagnose the KOS-ECU. Refer to Diagnostic Trouble
.
NO : Go to Step 2.
STEP 2. Check liftgate lock release handle connector F-09
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is liftgate lock release handle connector F-09 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Check that the liftgate lock release handle
works normally.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-154
STEP 3. Check the wiring harness between liftgate lock
release handle connector F-09 (terminal No. 2) and ground.
• Check the ground wires for open circuit.
Q: Are the wiring harness between liftgate lock release
handle connector F-09 (terminal No. 2) and ground 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. Check that
the liftgate lock release handle works normally.
STEP 4. Liftgate lock release handle check
(1) Remove the liftgate lock release handle (Refer to GROUP
42A, Liftgate Handle and Latch
).
(2) Check continuity when the liftgate lock release handle is
operated to "ON" or "OFF" position.
<OPEN SWITCH>
<LOCK SWITCH>
Q: Is the liftgate lock release handle normal?
YES : Go to Step 5.
NO : Replace the liftgate lock release handle. Check that
the liftgate lock release handle works normally.
STEP 5. KOS communication test
Using scan tool (M.U.T-III), perform the antenna communica-
tion test to check that the outside transmission antenna assem-
bly (liftgate) communicates normally (Refer to
).
Q: Is the check result normal?
YES : Go to Step 6
NO : Perform troubleshooting for diagnostic trouble code
).
Switch
position
Terminal
number
Normal value
Push (open)
1
− 2
Continuity
exists (2
Ω or
less)
Release
1
− 2
No continuity
Switch
position
Terminal
number
Normal value
Push (lock)
2
− 3
Continuity
exists (2
Ω or
less)
Release
2
− 3
No continuity
ACA00837AD
Lock switch
Open switch
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