Mitsubishi Lancer Evolution X. Manual — part 540
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-117
LOGIC FLOW CHARTS (Monitor Sequence) <Target clutch 1 (odd) pressure: 1,400 hPa
or less>
.
AC805099
*: Time required
The time required for the "Rationality-high" monitor depends on the transmission fluid temperature,
the shift lever position.
Example of the time required
i) When the shift lever position is P: The time required is always 220 msec.
ii) When the shift lever position is "R -> N":
If the transmission fluid temperature is -10˚C (14˚F) or more, the time required is 1,220 msec.
If the transmission fluid temperature is lower than -10˚C (14˚F), the time required is 2,220 msec.
iii) When shift lever position is D:
If the transmission fluid temperature is -10˚C (14˚F) or less, the time required is 3,220 msec.
If the transmission fluid temperature is higher than -10˚C (14˚F), the time required is 2,220 msec.
Shift lever position
Transmission fluid temperature
Time required
"D N" or "R N" or "R P"
"N" or "P"
"R" or "D"
>= -10˚C (14˚F)
< -10˚C (14˚F)
<= -10˚C (14˚F)
> -10˚C (14˚F)
All range
1,220 msec
2,220 msec
220 msec
3,220 msec
2,220 msec
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 220 msec
No
Yes
Yes
Yes
No
Calculated pressure
< -1,000 mbar
hPa
"R" or "D" or manual mode
AB
Continuous failure
for time required*
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-118
DTC SET CONDITIONS <TARGET
CLUTCH 1 (ODD) PRESSURE: 1,400 HPA
OR LESS>
Check Conditions
• Engine speed: 650 r/min or more.
• Time since above engine condition: 1.5 seconds
or more.
• Clutch 1 (odd) state: Slip or engaged.
• Target clutch 1 (odd) pressure: 1,400 hPa or less.
JUDGMENT CRITERIA
• Calculated pressure: −1,000 hPa or less. (Time
required
*
)
*: Time required
The time required for the "Rationality-high" monitor depends on the transmission fluid temperature, the shift
lever position.
Example of the time required
i) When the shift lever position is P: The time required is always 220 msec.
ii) When the shift lever position is "R → N":
If the transmission fluid temperature is -10 ° C (14 ° F) or more, the time required is 1,220 msec.
If the transmission fluid temperature is lower than -10 ° C (14 ° F), the time required is 2,220 msec.
iii) When shift lever position is D:
If the transmission fluid temperature is -10 ° C (14 ° F) or less, the time required is 3,220 msec.
If the transmission fluid temperature is higher than -10 ° C (14 ° F), the time required is 2,220 msec.
.
Shift lever position
Transmission fluid temperature
Time required
"D → N" or "R → N" or "R → P"
>= -10 ° C (14 ° F)
1,220 msec
< -10 ° C (14 ° F)
2,220 msec
"N" or "P"
All range
220 msec
"R" or "D" or manual mode
<= -10 ° C (14 ° F)
3,220 msec
> -10 ° C (14 ° F)
2,220 msec
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-119
OBD-II DRIVE CYCLE PATTERN <TARGET
CLUTCH 1 (ODD) PRESSURE: 1,400 HPA
OR LESS>
The clutch 1 (odd) pressure remains −1,000 hPa or
more for time required
*
.
*: Time required
The time required for the "Rationality-high" monitor depends on the transmission fluid temperature, the shift
lever position.
Example of the time required
i) When the shift lever position is P: The time required is always 220 msec.
ii) When the shift lever position is "R → N":
If the transmission fluid temperature is -10 ° C (14 ° F) or more, the time required is 1,220 msec.
If the transmission fluid temperature is lower than -10 ° C (14 ° F), the time required is 2,220 msec.
iii) When shift lever position is D:
If the transmission fluid temperature is -10 ° C (14 ° F) or less, the time required is 3,220 msec.
If the transmission fluid temperature is higher than -10 ° C (14 ° F), the time required is 2,220 msec.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
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. 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.
Shift lever position
Transmission fluid temperature
Time required
"D → N" or "R → N" or "R → P"
>= -10 ° C (14 ° F)
1,220 msec
< -10 ° C (14 ° F)
2,220 msec
"N" or "P"
All range
220 msec
"R" or "D" or manual mode
<= -10 ° C (14 ° F)
3,220 msec
> -10 ° C (14 ° F)
2,220 msec
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-120
STEP 2. Check whether the DTC is reset.
After the test run, check that the DTC is reset.
Q: Is DTC No. P181C set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
DTC P181E: Clutch 2 (Pressure low 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 low.
.
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
.
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