Mitsubishi Lancer Evolution X. Manual - part 543

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-129

OBD-II DRIVE CYCLE PATTERN <TARGET 
CLUTCH 1 (ODD) PRESSURE: 1,400 HPA 
OR MORE TO 3,000 HPA OR LESS>

The calculated pressure remains − 2,000 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.

.

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-130

LOGIC FLOW CHARTS (Monitor Sequence) <Target clutch 2 (even) 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-131

DTC SET CONDITIONS <TARGET 
CLUTCH 2 (EVEN) 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 2 (even) state: Slip or engaged.
• Target clutch 2 (even) 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-132

OBD-II DRIVE CYCLE PATTERN <TARGET 
CLUTCH 2 (EVEN) PRESSURE: 1,400 HPA 
OR LESS>

The clutch 2 (even) 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 

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