Mitsubishi Lancer Evolution X. Manual - part 598

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-349

INSPECTION PROCEDURE 7: The vehicle moves with the P-range.

.

COMMENTS ON TROUBLE SYMPTOM

The transaxle control cable, shift lever assembly, or 
transaxle assembly may have a problem.

.

PROBABLE CAUSES

• Malfunction of the transaxle control cable
• Malfunction of the shift lever assembly
• Malfunction of the transaxle assembly

DIAGNOSTIC PROCEDURE

STEP 1. Check for transaxle control cable installation
Check the transaxle control cable for installation condition.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Install the transaxle control cable properly. (Refer to 

P.22C-404

.)

STEP 2. Transaxle control cable operation check

1. Disconnect the connection of the transaxle assembly and 

the transaxle control cable.

2. Turn the ignition switch to the ON position and depress the 

brake pedal. Check that the transaxle control cable works 
when shift lever is moved to P⇔R.

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Go to Step 3.

STEP 3. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the transaxle control cable.(Refer to 

P.22C-404

.) Then, go to Step 4.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

STEP 4. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the shift lever assembly. (Refer to 

P.22C-404

.)

NO :  This diagnosis is complete.

STEP 5. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the transaxle assembly. (Refer to 

P.22C-412

.)

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

to Cope with Intermittent Malfunction 

P.00-15

.)

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-350

INSPECTION PROCEDURE 8: Slipping occurs with the D-range/R-range/manual mode, and engine 
racing occurs during gear shifting/driving.

.

COMMENTS ON TROUBLE SYMPTOM

Fluid may be insufficient or contaminated. Oil filter 
case assembly, mechatronic assembly, clutch 
assembly, or transaxle assembly may have a prob-
lem.

.

PROBABLE CAUSES

• Insufficient or contaminated fluid
• Malfunction of the oil filter case assembly
• Malfunction of the mechatronic assembly
• Malfunction of the clutch assembly
• Malfunction of the transaxle assembly

DIAGNOSTIC PROCEDURE

STEP 1. Oil filter case assembly check
(1) Check if the oil filter is replaced according to the cycle 

specified in the Maintenance Note.

• Normal condition : 96,000 km (60,000 miles)
• Severe condition : 48,000 km (30,000 miles)

(2) Visually check that no fluid leaks form the oil filter case 

assembly and it is installed normally.

Q: Is the check result normal?

YES : Go to Step 2.
NO :  Replace the oil filter case assembly. (Refer to 

P.22C-431

.)

STEP 2. Fluid check
Check for the fluid level and if no foreign material and contami-
nation are found.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Charge or replace the fluid.

STEP 3. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the mechatronic assembly. (Refer to 

P.22C-421

.) Then go to Step 4.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

STEP 4. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the clutch assembly. (Refer to GROUP 22D 

−Transaxle 

P.22D-6

.) Then go to Step 5.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-351

STEP 5. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the transaxle assembly. (Refer to 

P.22C-412

.)

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

to Cope with Intermittent Malfunction 

P.00-15

.)

INSPECTION PROCEDURE 9: The vehicle does not creep with the D-range/R-range/manual mode.

.

COMMENTS ON TROUBLE SYMPTOM

The foot brake or parking brake may be dragging. 
Mechatronic assembly, clutch assembly, or transaxle 
assembly may have a problem.
NOTE: If the fluid temperature is extremely high, the 
creep is controlled slightly for slip control.

.

PROBABLE CAUSES

• Drag of foot brake or parking brake
• Malfunction of the mechatronic assembly
• Malfunction of the clutch assembly
• Malfunction of the transaxle assembly

DIAGNOSTIC PROCEDURE

STEP 1. Inspect the foot brake or parking brake.
Check that the foot brake or parking brake is not dragging.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Adjust the foot brake or parking brake.

STEP 2. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the mechatronic assembly. (Refer to 

P.22C-421

.) Then go to Step 3.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

STEP 3. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the clutch assembly. (Refer to GROUP 22D 

−Transaxle 

P.22D-6

.) Then go to Step 4.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

STEP 4. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the transaxle assembly. (Refer to 

P.22C-412

.)

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

to Cope with Intermittent Malfunction 

P.00-15

.)

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-352

INSPECTION PROCEDURE 10: The shock is large when the vehicle is stopped and the brake pedal is 
released with the D-range/R-range/manual mode.

.

COMMENTS ON TROUBLE SYMPTOM

The mechatronic assembly, or clutch assembly may 
have a problem.

.

PROBABLE CAUSES

• Malfunction of the mechatronic assembly
• Malfunction of the clutch assembly

DIAGNOSTIC PROCEDURE

STEP 1. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the mechatronic assembly. (Refer to 

P.22C-421

.) Then go to Step 2.

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

to Cope with Intermittent Malfunction 

P.00-15

.)

STEP 2. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the clutch assembly. (Refer to GROUP 22D 

−Transaxle 

P.22D-6

.)

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

to Cope with Intermittent Malfunction 

P.00-15

.)

INSPECTION PROCEDURE 11: Poor acceleration

.

COMMENTS ON TROUBLE SYMPTOM

Fluid may be insufficient or contaminated. Engine 
system, mechatronic assembly, clutch assembly, or 
transaxle assembly may have a problem.

.

PROBABLE CAUSES

• Malfunction of the engine system
• Insufficient or contaminated fluid
• Malfunction of the mechatronic assembly
• Malfunction of the clutch assembly
• Malfunction of the transaxle assembly

DIAGNOSTIC PROCEDURE

STEP 1. Check the engine system
Q: Is the check result normal?

YES : Go to Step 2
NO :  Repair the engine system.

STEP 2. Fluid check
Check for the fluid level and if no foreign material and contami-
nation are found.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Charge or replace the fluid.