Mitsubishi Evolution X. Manual - part 389

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-13

P1844

Shift fork 3 malfunction

P.22C-164

P184B

Shift fork 4 malfunction

P.22C-171

P1852

Shift fork 1 or 2 opposite direction movement

P.22C-179

P1855

Shift fork 3 or 4 opposite direction movement

P.22C-182

P1857

Odd number gear axle interlock

P.22C-185

P1858

Even number gear axle interlock

P.22C-187

P1859

Disengagement too late with clutch 1

P.22C-189

P185A

Engagement too late with clutch 1

P.22C-190

P185B

Disengagement too late with clutch 2

P.22C-191

P185C

Engagement too late with clutch 2

P.22C-193

P185D

Clutch open not possible

P.22C-193

P1862

High side 1 system (Overcurrent)

P.22C-195

P1863

High side 1 system (Open circuit)

P.22C-197

P1864

High side 1 system (Short to power supply)

P.22C-199

P1866

High side 2 system (Overcurrent)

P.22C-201

P1867

High side 2 system (Open circuit)

P.22C-203

P1868

High side 2 system (Short to power supply)

P.22C-205

P186A

High side 3 system (Overcurrent)

P.22C-207

P186B

High side 3 system (Open circuit)

P.22C-209

P186C

High side 3 system (Short to power supply)

P.22C-211

P186D

High side 1 system (Voltage low range out)

P.22C-213

P186E

High side 2 system (Voltage low range out)

P.22C-215

P186F

High side 3 system (Voltage low range out)

P.22C-217

P1870

Engine torque signal abnormality

P.22C-219

P1871

APS system (Signal abnormality)

P.22C-221

P1872

Between shift lever and TC-SST system (Q-A function abnormality)

P.22C-223

P1873

Clutch 1 system (Pressure abnormality)

P.22C-225

P1874

Clutch 2 system (Pressure abnormality)

P.22C-225

P1875

Damper speed sensor system (Poor performance)

P.22C-226

P1876

Gear block 1st

P.22C-229

P1877

Gear block 2nd

P.22C-230

P1878

Gear block 3rd

P.22C-232

P1879

Gear block 4th

P.22C-233

P187A

Gear block 5th

P.22C-235

P187B

Gear block 6th

P.22C-236

P187C

Gear block reverse

P.22C-238

DTC No.

Diagnostic item

Reference 
page

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-14

P1880

EOL Mode Active

P.22C-239

P1881

Twin clutch SST control mode switch system (Malfunction)

P.22C-240

P2718

Clutch/shift pressure solenoid 1 system (Open circuit)

P.22C-241

P2719

Clutch/shift pressure solenoid 1 system (Overcurrent)

P.22C-243

P2720

Clutch/shift pressure solenoid 1 system (Short to ground)

P.22C-245

P2721

Clutch/shift pressure solenoid 1 system (Short to power supply)

P.22C-247

P2727

Clutch/shift pressure solenoid 2 system (Open circuit)

P.22C-249

P2728

Clutch/shift pressure solenoid 2 system (Overcurrent)

P.22C-251

P2729

Clutch/shift pressure solenoid 2 system (Short to ground)

P.22C-253

P2730

Clutch/shift pressure solenoid 2 system (Short to power supply)

P.22C-255

P2733

Clutch/shift switching solenoid 1, spool stuck

P.22C-257

P2736

Clutch/shift switching solenoid 1 system (Open circuit)

P.22C-259

P2738

Clutch/shift switching solenoid 1 system (Short to ground)

P.22C-261

P2739

Clutch/shift switching solenoid 1 system (Short to power supply)

P.22C-262

P2741

Fluid temperature sensor system (Gradient error)

P.22C-264

P2742

Fluid temperature sensor system (Output low range out)

P.22C-266

P2743

Fluid temperature sensor system (Output high range out)

P.22C-268

P2766

Input shaft 2 (even number gear axle) speed sensor system (Poor 
performance)

P.22C-270

P2809

Clutch/shift switching solenoid 2, spool stuck

P.22C-274

P2812

Clutch/shift switching solenoid 2 system (Open circuit)

P.22C-276

P2814

Clutch/shift switching solenoid 2 system (Short to ground)

P.22C-278

P2815

Clutch/shift switching solenoid 2 system (Short to power supply)

P.22C-280

U0001

Bus off

P.22C-282

U0100

Engine time-out error

P.22C-284

U0103

Shift lever time-out error

P.22C-286

U0121

ASC time-out error

P.22C-287

U0136

AWC time-out error

P.22C-287

U0141

ETACS time-out error

P.22C-288

DTC No.

Diagnostic item

Reference 
page

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-15

SYMPTOM CHART

M1225005200035

CAUTION

During diagnosis, a DTC associated with other system may be set when the ignition switch is turned 
ON with connector(s) disconnected. On completion, confirm all systems for diagnostic trouble 
code(s). If diagnostic trouble code(s) are set, erase them all.

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0630: VIN not Recorded

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 chassis number is nor-
mal.

(TC-SST-ECU receives chassis number information 
from the engine control module via CAN, and write to 
TC-SST-ECU.)

.

DESCRIPTIONS OF MONITOR METHODS

The chassis number is determined to be written 
abnormally.

.

PROBABLE CAUSES

• The CAN bus line is defective.

• Malfunction of engine control module

• 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 

P.54C-14

.) After repairing the CAN 

bus line, go to Step 2.

STEP 2. Scan tool diagnostic trouble code
Check the engine diagnostic trouble code. (Refer to GROUP 
13A 

− Troubleshooting 

P.13A-44

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO :  Go to Step 3.

Symptom

Inspection 
procedure No.

Reference 
page

The scan tool cannot communicate with TC-SST-ECU.

1

P.22C-289

The driving mode cannot be changed.

2

P.22C-290

Speed change with the paddle shift is impossible.

3

P.22C-292

TC-SST-ECU power supply circuit malfunction

4

P.22C-295

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-16

STEP 3. Check whether the DTC is reset.
Q: Is DTC No. P0630 set?

YES : Replace the TC-SST assembly. (Refer to 

P.22C-341

.)

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

.)

DTC P0701: EEPROM System (Malfunction)

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 EEPROM and RAM in 
the TC-SST-ECU is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The EEPROM writing data is determined to be 
abnormal.

.

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 

P.54C-14

.) After repairing the CAN 

bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0701 set?

YES : Replace the TC-SST assembly. (Refer to 

P.22C-341

.)

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

.)

DTC P0702: Internal control module, monitoring processor system (Malfunction)

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 internal module and 
monitoring processor are normal.

.

DESCRIPTIONS OF MONITOR METHODS

The internal module and monitoring processor are 
determined to be abnormal.

.