Mitsubishi Evolution X. Manual — part 1057
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-589
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the TC-SST-ECU.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the TC-SST-ECU and the ETACS-ECU
(Refer to GROUP 00, How to Cope with Intermittent
Malfunction
).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the TC-SST-ECU and the ETACS-ECU
(Refer to GROUP 00, How to Cope with Intermittent
Malfunction
).
DTC U0103: Shift lever CAN timeout
CAUTION
• If DTC U0103 is set to the ETACS-ECU, always
diagnose the CAN bus line.
• Before replacing the ECU, ensure that the
communication circuit is normal.
.
TROUBLE JUDGMENT
If the signal from shift lever cannot be received, the
ETACS-ECU sets DTC U0103.
.
JUDGMENT CRITERIA
After the following statuses continue to be true for 5
seconds, if the communication with the shift lever
cannot be established for 0.6 second or more, the
ETACS-ECU determines that a problem has
occurred.
• No abnormality is present to the network.
• Ignition switch is in the ON position.
• No abnormality is present to the power supply
fuse, or the odometer value is at 80.5 km (50.0
miles) or more.
• ETACS-ECU system voltage is at 10−16 volts.
.
TROUBLESHOOTING HINTS
• The shift lever may be defective.
• The ETACS-ECU may be defective.
• The CAN bus may be defective.
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-590
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 (Vehicles with
CAN communication system)
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 con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III)
."
(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. Using scan tool MB991958, read the shift lever
diagnostic trouble code.
Check if DTC is set to the shift lever (Refer to GROUP 22C,
Diagnosis
).
Q: Is the DTC set?
YES : Troubleshoot the shift lever.
NO : Go to Step 3.
STEP 3. Using scan tool MB991958, read the TC-SST-ECU
diagnostic trouble code.
Check if the DTC U0103 is set to the TC-SST-ECU.
Q: Is the DTC set?
YES : Go to Step 4.
NO : Go to Step 5.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-591
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the shift lever.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the shift lever and the ETACS-ECU
(Refer to GROUP 00, How to Cope with Intermittent
Malfunction
).
STEP 5. Recheck for diagnostic trouble code.
Check again if the DTC is set to the ETACS-ECU.
(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON"
position.
(3) Check if DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?
YES : Replace the ETACS-ECU.
NO : The trouble can be an intermittent malfunction such
as a poor connection or open circuit in the CAN bus
lines between the shift lever and the ETACS-ECU
(Refer to GROUP 00, How to Cope with Intermittent
Malfunction
).
DTC U0121: ASC-ECU CAN timeout
CAUTION
• If DTC U0121 is set to the ETACS-ECU, always
diagnose the CAN bus line.
• Before replacing the ECU, ensure that the
communication circuit is normal.
.
TROUBLE JUDGMENT
If the signal from ASC-ECU cannot be received, the
ETACS-ECU sets DTC U0121.
.
JUDGMENT CRITERIA
After the following statuses continue to be true for 5
seconds, if the communication with the ASC-ECU
cannot be established for 0.6 second or more, the
ETACS-ECU determines that a problem has
occurred.
• No abnormality is present to the network.
• Ignition switch is in the ON position.
• No abnormality is present to the power supply
fuse, or the odometer value is at 80.5 km (50.0
miles) or more.
• ETACS-ECU system voltage is at 10−16 volts.
.
TROUBLESHOOTING HINTS
• The ASC-ECU may be defective.
• The ETACS-ECU may be defective.
• The CAN bus may be defective.
ETACS
TSB Revision
CHASSIS ELECTRICAL
54A-592
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 (Vehicles with
CAN communication system)
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 con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect the
Scan Tool (M.U.T.-III)
."
(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. Using scan tool MB991958, read the ASC
diagnostic trouble code.
Check if DTC is set to the ASC-ECU.
Q: Is the DTC set?
YES : Troubleshoot the ASC (Refer to GROUP 35C,
).
NO : Go to Step 3.
STEP 3. Using scan tool MB991958, read the TC-SST
diagnostic trouble code.
Check if the DTC U0121 is set to the TC-SST-ECU.
Q: Is the DTC set?
YES : Go to Step 4.
NO : Go to Step 5.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB
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