Mitsubishi Outlander GS45X. Manual — part 1141
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-143
STEP 2. 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
.
NO : Go to Step 3.
STEP 3. Check the central door locking operation
Check that the central door locking system works normally.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Perform troubleshooting for the central door locking
system (Refer to GROUP 42A
− Door −
Troubleshooting
).
STEP 4. Check the customize function.
Check that either of the followings other than "ENG strt enable"
or "Both disabled" are set for "KOS feature" with the customiza-
tion function.
• Both enable
• Door Entry enable
Q: Is the check result normal?
YES : Go to Step 5.
NO : Set either of the followings other than "ENG strt
enable" or "Both disabled" for "KOS feature" with the
customization function (Refer to
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-144
STEP 5. Key reminder switch check
(1) Disconnect the C-315 ETACS-ECU connector.
(2) Measure the resistance at the harness-side connector with
the ignition key removed from the ignition key cylinder.
(3) Check for continuity between the C-315 ETACS-ECU
connector terminal No. 13 and the ground.
OK: Continuity exists (2
Ω or less)
Q: Is the check result normal?
YES : Go to Step 6.
NO : Check the C-213 key reminder switch connector, the
C-315 ETACS-ECU connector, the wiring harness
between the C-213 key reminder switch connector
(terminal No. 3) and the C-315 ETACS-ECU
connector (terminal No. 13), and between the C-213
key reminder switch connector (terminal No. 2) and
the ground. If they are normal, replace the key
reminder switch.
STEP 6. Check with another registered keyless operation
key.
Q: Does the IG knob turn? (Is the keyless operation key
recognized?)
YES : Replace the keyless operation key with which the IG
knob does not turn (no recognition) and register the
ID codes (Refer to
NO : Go to Step 7.
STEP 7. Check of the troubles
Operate the lock/unlock switch and check that the door can be
locked and unlocked.
Q: Is the check result normal?
YES : The procedure is complete.
NO : Replace KOS-ECU and register the ID codes (Refer
to
AC209731
Connector C-315
(harness side)
AC208731BP
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-145
Inspection Procedure 7: Driver's door lock/unlock switch does 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 exterior transmitter antenna
assembly (driver's side)
• Malfunction of the lock/unlock switch (front door:
LH)
• Damaged wiring harness and connectors
• Malfunction of the KOS-ECU
ACA20773AB
Lock/unlock switch (Front Door: LH) Circuit
LOCK/UNLOCK SWITCH
(FRONT DOOR: LH)
KOS-ECU
AC901075AI
Connectors: C-102, C-126,C-127
C-102
C-127 (BR)
C-126
AC702239
Connector: E-23
E-23 (GR)
AC
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-146
DIAGNOSTIC PROCEDURE
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
• 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
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
.
NO : Go to Step 2.
STEP 2. Check KOS-ECU connector C-102 and lock/unlock
switch (front door: LH) connector E-23 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Are KOS-ECU connector C-102 and lock/unlock switch
(front door: LH) connector E-23 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 driver’s door lock/unlock
switch works normally.
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
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