Mitsubishi Evolution X. Manual - part 399

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-53

DTC P0960: Line Pressure Solenoid 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 line pressure solenoid 
circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The line pressure solenoid 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)

• P0746: Line pressure solenoid system (Drive cur-

rent range out)

• P0961: Line pressure solenoid system (Overvolt-

age)

• P0962: Line pressure solenoid system (Short to 

ground)

• P0963: Line pressure solenoid system (Short to 

power supply)

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

LOGIC FLOW CHARTS (Monitor Sequence)

.

AC710629

START

No

Yes

Yes

Good

Malfunction

END

No

No

Yes

FET* output > 1 V

*FET : Field Effect Transistor

Monitoring condition met

Continuous failure
for 10 sec

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-54

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. 

(10 seconds)

.

OBD-II DRIVE CYCLE PATTERN

The FET channel output remains 1 V or less for 10 
seconds.

.

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. P0960 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 P0961: Line Pressure Solenoid System (Overcurrent)

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 line pressure solenoid 
circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The supply current to the line pressure solenoid is 
determined to be overcurrent.

.

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)

• P0746: Line pressure solenoid system (Drive cur-

rent range out)

• P0960: Line pressure solenoid system (Open cir-

cuit)

• P0962: Line pressure solenoid system (Short to 

ground)

• P0963: Line pressure solenoid system (Short to 

power supply)

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-55

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) current: 3.5 A or 

more, and FET (Field Effect Transistor) output: 
100 mV or less (10 times).

.

OBD-II DRIVE CYCLE PATTERN

The current of the FET channel shunt is 3.5 A or 
less, and the FET channel output is 100 mV or more.

.

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.

AC710630

START

No

Yes

Yes

Good

Malfunction

END

No

No

Yes

FET* currentl > 3.5 A

FET* output < 100 mV

Yes

No

*FET : Field Effect Transistor

Monitoring condition met

Continuous failure
for 10 times

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-56

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0961 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 P0962: Line Pressure Solenoid System (Short to ground)

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 line pressure solenoid 
circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The line pressure solenoid circuit is determined to be 
short to ground.

.

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)

• P0746: Line pressure solenoid system (Drive cur-

rent range out)

• P0960: Line pressure solenoid system (Open cir-

cuit)

• P0961: Line pressure solenoid system (Overvolt-

age)

• P0963: Line pressure solenoid system (Short to 

power supply)

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.