Mitsubishi Outlander GS45X. Manual — part 1129
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-95
STEP 1. Using scan tool MB991958, diagnose the CAN bus
line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to GROUP 54C
−
CAN Bus Diagnostics table
). On
completion, go to Step 2.
STEP 2. Diagnostic trouble code check
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1608 set?
YES : Replace the KOS-ECU and register the ID codes
(Refer to
). Then go to Step 3.
NO : The procedure is complete.
STEP 3. Diagnostic trouble code check
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1608 set?
YES : Start over at Step 1.
NO : The procedure is complete.
DTC C1900: No registration
CAUTION
If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagno-
sis, diagnose the CAN bus lines (Refer to GROUP 54C,
Trouble code diagnosis
.
DTC SET CONDITION
When the ID registration information of the TPMS transmitter is
not stored in KOS-ECU, and/or when KOS-ECU is replaced
with a new one, this code is set. If the ID registration mode is
terminated forcibly or time-out after one or more TPMS trans-
mitters are registered in the ID registration mode, the ID infor-
mation in the KOS-ECU is erased, and this diagnostic trouble
code is set.
.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
• Damaged wiring harness and connector
• Malfunction of TPMS transmitter
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-96
• Malfunction of KOS-ECU
• ID code registration failed
DIAGNOSIS
Required Special Tools:
• 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, diagnose the CAN bus
line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the CAN bus lines (Refer to GROUP 54C
−
CAN Bus Diagnostics table
). On
completion, go to Step 2.
STEP 2. Diagnostic trouble code check
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1900 set?
YES : Register the ID codes (Refer to
). Then go
to Step 3.
NO : The procedure is complete.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set.
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1900 reset?
YES : Replace the KOS-ECU and register the ID codes
(Refer to
NO : The procedure is complete.
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-97
DTC C1901: Vehicle speed information abnormality
CAUTION
If there is any problem in the CAN bus lines, an incorrect
diagnostic trouble code may be set. Prior to this diagno-
sis, diagnose the CAN bus lines (Refer to GROUP 54C,
Trouble code diagnosis
.
DTC SET CONDITION
KOS-ECU receives the wheel speed information from
ABS-ECU or ASC-ECU via the CAN-bus line. Although
KOS-ECU receives the information that the wheel is not cur-
rently rotated from ABS-ECU or ASC-ECU, if the TPMS trans-
mitter sends the information that the wheel is rotated, this code
is set.
.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
• Damaged wiring harness and connector
• Malfunction of TPMS transmitter
• Malfunction of KOS-ECU
• Malfunction of ABS-ECU or ASC-ECU
• Malfunction of ETACS-ECU
DIAGNOSIS
Required Special Tools:
• 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, diagnose the CAN bus
line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines (Refer to GROUP 54C
−
CAN Bus Diagnostics table
). On
completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting
CAN bus lines
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1901 set?
YES : Go to Step 3.
NO : The procedure is complete.
DIAGNOSIS
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KEYLESS OPERATION SYSTEM (KOS)
42B-98
STEP 3. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ABS-ECU or
ASC-ECU <Refer to GROUP 35B, diagnostic trouble code
chart
(vehicles without ASC) or Refer to GROUP
35C, diagnostic trouble code chart
(vehicles with
ASC)>.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Carry out the troubleshooting for ABS-ECU or
ASC-ECU <Refer to GROUP 35B, diagnostic trouble
code chart
(vehicles without ASC) or Refer
to GROUP 35C, diagnostic trouble code chart
(vehicles with ASC)>. Then go to Step 6.
STEP 4. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ETACS-ECU
(Refer to GROUP 54A, ETACS
− diagnostic trouble code chart
).
Q: Is the check result normal?
YES : Go to Step 5.
NO : Troubleshoot the set DTC (Refer to GROUP 54A,
ETACS
− diagnostic trouble code chart
Then go to Step 6.
STEP 5. Check the TPMS transmitter acceleration.
Check the acceleration value of each TPMS transmitter by the
TPMS transmitter check function (Refer to
OK:
Acceleration value: 5G or less
Q: Is the check result OK?
YES : Replace the KOS-ECU and register ID codes (Refer
to
NO : Replace the TPMS transmitter and register ID codes
(Refer to
STEP 6. Recheck for diagnostic trouble code.
(1) Turn the ignition switch to the "LOCK" (OFF) position.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC C1901 set?
YES : Start over at Step 1.
NO : The procedure is complete.
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