Mitsubishi Evolution X. Manual — part 433
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-189
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P1858 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P1859: Disengagement too late with clutch 1
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 1 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The disengagement of the clutch 1 is determined to
be late.
.
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)
• P0841: Clutch 1 pressure sensor system (Poor
performance)
• P0842: Clutch 1 pressure sensor system (Output
low range out)
• P0843: Clutch 1 pressure sensor system (Output
high range out)
• P1836: Shift fork 1 malfunction
• P183D: Shift fork 2 malfunction
Sensor (The sensor below is determined to be
normal)
• Clutch 1 pressure sensor
.
LOGIC FLOW CHARTS (Monitor Sequence)
.
AC710675
START
No
Good
Malfunction
END
Yes
Malfunction criteria met
Yes
Monitoring condition met
No
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-190
DTC SET CONDITIONS
Check Conditions
• Voltage of battery: 8 V or more.
• Voltage of battery: 16.5 V or less.
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Clutch 1 (odd) state: Disengaging.
JUDGMENT CRITERIA
•
• The disengagement time of the clutch (depends
on the fluid temperature) is outside the threshold
value.
.
OBD-II DRIVE CYCLE PATTERN
The disengagement time of the clutch (depends on
the fluid temperature) corresponds with the threshold
value.
.
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.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P1859 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P185A: Engagement too late with clutch 1
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 1 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The engagement of the clutch 1 is determined to be
late.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
AC710825
Maxim
um allo
w
ed time (sec)
25
20
15
10
5
-30-20-10
0
60
120
Fluid temperature (degC)
AB
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-191
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.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P185A set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P185B: Disengagement too late with clutch 2
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 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The disengagement of the clutch 2 is determined to
be late.
.
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-192
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.
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Clutch 2 (even) state: Disengaging.
JUDGMENT CRITERIA
•
• The disengagement time of the clutch (depends
on the fluid temperature) is outside the threshold
value.
.
OBD-II DRIVE CYCLE PATTERN
The disengagement time of the clutch (depends on
the fluid temperature) corresponds with the threshold
value.
.
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.
AC710675
START
No
Good
Malfunction
END
Yes
Malfunction criteria met
Yes
Monitoring condition met
No
AC710825
Maxim
um allo
w
ed time (sec)
25
20
15
10
5
-30-20-10
0
60
120
Fluid temperature (degC)
AB
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