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

Good

Malfunction

END

Monitoring condition met

Continuous failure
for 220 msec

Yes

Calculated pressure
< -1,000 mbar

hPa

"R" or "D" or manual mode

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>

TSB Revision

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":

iii) When shift lever position is D:

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

P.54C-15

.) 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>

TSB Revision

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

P.22C-421

NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

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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