Mitsubishi Evolution X. Manual - part 450

 

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Mitsubishi Evolution X. Manual - part 450

 

 

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-257

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P2730 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 P2733: Clutch/Shift Changeover Solenoid 1, spool stuck

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/shift 
changeover solenoid 1 is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The clutch/shift changeover solenoid 1 is determined 
to be seized.

.

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)

• P2736: Clutch/shift switching solenoid 1 system 

(Open circuit)

• P2738: Clutch/shift switching solenoid 1 system 

(Short to ground)

• P2739: Clutch/shift switching solenoid 1 system 

(Short to power supply)

• P181B: Clutch 1 (Pressure low range out)

• P181C: Clutch 1 (Pressure high range out)

• P1859: Disengagement too late with clutch 1

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-258

LOGIC FLOW CHARTS (Monitor Sequence)

.

DTC SET CONDITIONS

Check Conditions

• Voltage of battery: 8 V or more.

• Voltage of battery: 16.5 V or less.

• Engine speed: 500 r/min or more.

• Time since above engine condition: 400 millisec-

ond or more.

• Clutch/shift changeover solenoid 1: ON.

• Clutch/shift changeover solenoid 2: OFF.

• Clutch cooling flow solenoid: OFF.

• Clutch/shift pressure solenoid 1: ON.

JUDGMENT CRITERIA

• Clutch 1 (odd) pressure: 1,400 mbar or more, or 

clutch 1 pressure sensor (odd) change: 0, and 
shift fork position sensor 1 and 2 change: 0. (200 
millisecond)

.

OBD-II DRIVE CYCLE PATTERN

The status with the clutch 1 pressure 1,400 mbar or 
less, or with the clutch 1 pressure sensor (odd) and 
shift fork position sensor 1 and 2 changed continues 
for 200 milliseconds.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU

AC710660

START

No

Good

Malfunction

END

Continuous failure
for 200 msec

No

Yes

Yes

Yes

No

Monitoring condition met

Clutch pressure
> 1,400 mbar

Yes

Yes

No

No

Clutch pressure
sensor change = 0

|Shift fork position
sensor change| = 0

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-259

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. P2733 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 P2736: Clutch/Shift Changeover Solenoid 1 System (Open circuit)

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/shift 
changeover solenoid 1 circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The clutch/shift changeover solenoid 1 circuit is 
determined to be open.

.

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)

• P2733: Clutch/shift switching solenoid 1, spool 

stuck

• P2738: Clutch/shift switching solenoid 1 system 

(Short to ground)

• P2739: Clutch/shift switching solenoid 1 system 

(Short to power supply)

• P181B: Clutch 1 (Pressure low range out)

• P181C: Clutch 1 (Pressure high range out)

• P1859: Disengagement too late with clutch 1

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-260

LOGIC FLOW CHARTS (Monitor Sequence)

.

DTC SET CONDITIONS

Check Conditions

• Voltage of battery: 8 V or more.

• Voltage of battery: 16.5 V or less.

JUDGMENT CRITERIA

• FET (Field Effect Transistor) output: 1 V or more. 

(400 millisecond)

.

OBD-II DRIVE CYCLE PATTERN

The FET channel output remains 1 V or less for 400 
milliseconds.

.

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. P2736 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

.)

AC710661

START

No

Good

Malfunction

END

Monitoring condition met

Continuous failure
for 400 msec

No

Yes

Yes

Yes

FET* output > 1 V

No

*FET : Field Effect Transistor

 

 

 

 

 

 

 

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