Mitsubishi Evolution X. Manual — part 457
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-285
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS
Check Conditions
• Voltage of battery: 8 V or more.
• Voltage of battery: 16.5 V or less.
• Time after TC-SST-ECU start: 5 seconds or
more.
JUDGMENT CRITERIA
• CAN communication with ECM: Fail. (Immedi-
ately)
.
OBD-II DRIVE CYCLE PATTERN
Receive the signal from ECM.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• ECM malfunction
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code
Check the engine diagnostic trouble code. (Refer to GROUP
13A
− Troubleshooting
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
AC710732
START
No
Good
Malfunction
END
Yes
Yes
CAN communication
with ECM = failed
No
Monitoring condition met
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-286
STEP 3. Check whether the DTC is reset.
Q: Is DTC No. U0100 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC U0103: Shift Lever Time-out Error
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
DESCRIPTIONS OF MONITOR METHODS
The periodic communication data from the shift
lever-ECU cannot be received.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• Malfunction of the shift lever-ECU
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code
Check the shift lever diagnostic trouble code. (Refer to
.)
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. Check whether the DTC is reset.
Q: Is DTC No. U0103 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-287
DTC U0121: ASC Time-out Error
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
DESCRIPTIONS OF MONITOR METHODS
The periodic communication data from the ASC-ECU
cannot be received.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• Malfunction of ASC-ECU
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code
Check the ASC diagnostic trouble code. (Refer to GROUP 35C
− Troubleshooting
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. Check whether the DTC is reset.
Q: Is DTC No. U0121 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC U0136: AWC Time-out Error
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
DESCRIPTIONS OF MONITOR METHODS
The periodic communication data from the engine
control module cannot be received.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• Malfunction of AWC-ECU
• Malfunction of TC-SST-ECU
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-288
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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
−
Troubleshooting
.)
STEP 2. Scan tool diagnostic trouble code
Check the AWC diagnostic trouble code. (Refer to GROUP 22A
− Troubleshooting
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. Check whether the DTC is reset.
Q: Is DTC No. U0136 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC U0141: ETACS Time-out Error
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
DESCRIPTIONS OF MONITOR METHODS
The periodic communication data from the
ETACS-ECU cannot be received.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• Malfunction of the ETACS-ECU
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code
Check the ETACS diagnostic trouble code. (Refer to GROUP
54A
− Troubleshooting
.)
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
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