Mitsubishi Outlander GS45X. Manual — part 1138
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-131
TROUBLESHOOTING HINTS
• Damaged wiring harness and connectors
• Malfunction of KOS-ECU
STEP 1. Check KOS-ECU connector C-102 and
ETACS-ECU connector C-317 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Is the KOS-ECU connector C-102 and ETACS-ECU
connector C-317 in good condition?
YES : Go to Step 2.
NO : Repair the defective connector.
STEP 2. Check the wiring harness between the KOS-ECU
connector C-102 (terminal No. 38, 39) and the ETACS-ECU
connector C-317 (terminal No. 10, 5) and between the
KOS-ECU connector C-102 (terminal No. 14) and the body
ground.
• Check the power supply line for open and short circuit, and
check the ground line for open circuit.
Q: Is the wiring harness between KOS-ECU connector
C-102 (terminal No. 38, 39) and the ETACS-ECU
connector C-317 (terminal No. 10, 5) and between the
KOS-ECU connector C-102 (terminal No. 14) and the
body ground in good condition?
YES : Go to Step 3.
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.
STEP 3. Retest the system
Q: Does the abnormality in KOS-ECU power supply and
ground circuits in good condition?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00, How to use
Troubleshooting/inspection Service Points - How to
Cope with Intermittent Malfunction
NO : Replace KOS-ECU and register the ID codes. (Refer
to
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-132
Inspection Procedure 3: Keyless operation warning display does not disappear.
CAUTION
Before replacing the ECU, ensure that the power
supply circuit, the ground circuit and the com-
munication circuit are normal.
.
TROUBLESHOOTING HINTS
• Malfunction of CAN bus line
• Malfunction of combination meter
• Damaged wiring harness and connectors
• 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)
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code.
Check the DTC B2415 is set to the KOS-ECU.
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 too (M.U.T.-III)
(2) Turn the ignition switch to the "ON" position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC B2415 is set?
.
NO : Go to Step 2.
STEP 2. Using scan tool MB991958, read the combination
meter diagnostic trouble code.
Check if DTC is set in the combination meter.
Q: Is the DTC set?
YES : Troubleshoot the combination meter. (Refer to
GROUP 54A, Diagnosis .)
NO : Go to Step 3.
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-133
STEP 3. Using scan tool MB991958, read the KOS-ECU
trouble code.
Check if DTC is set to the KOS-ECU.
Q: Is any DTC set?
.
NO : Go to Step 4.
STEP 4. Check of the troubles.
Check that the keyless operation warning display turns OFF
unless the flashing or illumination conditions are met.
Q: Does the warning display operate properly?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00
− How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
NO : Replace KOS-ECU and register the ID codes. (Refer
to
DIAGNOSIS
TSB Revision
KEYLESS OPERATION SYSTEM (KOS)
42B-134
Inspection Procedure 4: IG knob will not turn (keyless operation is not recognized).
CAUTION
Before replacing the ECU, ensure that the com-
munication circuit is normal.
ACA02761
IMMOBILIZER
ANTENNA
KEYLESS
ENTRY
RECEIVER
KOS-ECU System Circuit
KOS-ECU
KEY
REMINDER
SWITCH
WHEN
REMOVING
KEY: ON
(PUSH SWITCH)
ETACS-ECU
FUSIBLE
LINK
36
RELAY
BOX
KEYLESS
OPERATION
KEY
KEY ID
TRANSPONDER
RECEIVER
ANTENNA MODULE
AB
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