Mitsubishi Evolution X. Manual — part 411
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-101
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P181E set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P181F: Clutch 2 (Pressure high range out)
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.
.
DIAGNOSTIC FUNCTION
TC-SST-ECU checks that the clutch 2 pressure is
normal.
.
DESCRIPTIONS OF MONITOR METHODS
The pressure of the clutch 2 is too high.
.
MONITOR EXECUTION
• Continuous
.
MONITOR EXECUTION CONDITIONS
(OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• P0846: Clutch 2 pressure sensor system (Poor
performance)
• P0847: Clutch 2 pressure sensor system (Output
low range out)
• P0848: Clutch 2 pressure sensor system (Output
high range out)
• P1844: Shift fork 3 malfunction
• P184B: Shift fork 4 malfunction
Sensor (The sensor below is determined to be
normal)
• Clutch 2 pressure sensor
.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-102
LOGIC FLOW CHARTS (Monitor Sequence)
<Target clutch 2 (even) pressure: 3,000 mbar or more>
.
DTC SET CONDITIONS <TARGET
CLUTCH 2 (EVEN) PRESSURE: 3,000
MBAR OR MORE>
Check Conditions
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Clutch 2 (even) state: Slip or engaged.
• Target clutch 2 (even) pressure: 3,000 mbar or
more.
JUDGMENT CRITERIA
• Calculated pressure: −5,000 mbar or less. (220
millisecond)
.
OBD-II DRIVE CYCLE PATTERN <TARGET
CLUTCH 2 (EVEN) PRESSURE: 3,000
MBAR OR MORE>
The calculated pressure remains
−5,000 mbar or
more for 220 milliseconds.
.
AC710672
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 220 msec
No
Yes
Yes
Yes
No
Calculated pressure
< -5,000 mbar
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-103
LOGIC FLOW CHARTS (Monitor Sequence)
<Target clutch 2 (even) pressure: 1,400 mbar or more to 3,000 mbar or less>
.
DTC SET CONDITIONS <TARGET
CLUTCH 2 (EVEN) PRESSURE: 1,400
MBAR OR MORE TO 3,000 MBAR OR
LESS>
Check Conditions
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Clutch 2 (even) state: Slip or engaged.
• Target clutch 2 (even) pressure: 1,400 mbar or
more.
JUDGMENT CRITERIA
• Calculated pressure: −2,000 mbar or less. (220
millisecond)
.
OBD-II DRIVE CYCLE PATTERN <TARGET
CLUTCH 1 (ODD) PRESSURE: 1,400
MBAR OR MORE TO 3,000 MBAR OR
LESS>
The calculated pressure remains
−2,000 mbar or
more for 220 milliseconds.
.
AC710673
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 220 msec
No
Yes
Yes
Yes
No
Calculated pressure
< -2,000 mbar
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-104
LOGIC FLOW CHARTS (Monitor Sequence)
<Target clutch 2 (even) pressure: 1,400 mbar or less>
.
DTC SET CONDITIONS <TARGET
CLUTCH 2 (EVEN) PRESSURE: 1,400
MBAR OR LESS>
Check Conditions
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Clutch 2 (even) state: Slip or engaged.
• Target clutch 2 (even) pressure: 1,400 mbar or
less.
JUDGMENT CRITERIA
• Calculated pressure: −1,000 mbar or less. (220
millisecond)
.
OBD-II DRIVE CYCLE PATTERN <TARGET
CLUTCH 2 (EVEN) PRESSURE: 1,400
MBAR OR LESS>
The clutch 2 (even) pressure remains
−1,000 mbar or
more for 220 milliseconds.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, 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.
AC710674
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 220 msec
No
Yes
Yes
Yes
No
Calculated pressure
< -1,000 mbar
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