Mitsubishi Evolution X. Manual — part 401

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-61

DTC P0965: Clutch Cooling Flow 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 clutch cooling flow
solenoid circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The supply current to the clutch cooling flow 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)

• P0776: Clutch cooling flow solenoid system

(Drive current range out)

• P0777: Clutch cooling flow solenoid system

(Stuck)

• P0964: Clutch cooling flow solenoid system

(Open circuit)

• P0966: Clutch cooling flow solenoid system

(Short to ground)

• P0967: Clutch cooling flow 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-62

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.

.

JUDGMENT CRITERIA

• FET (Field Effect Transistor) current: 3.5 A or

more, and FET (Field Effect Transistor) output:
100 mV or less (180 millisecond).

.

OBD-II DRIVE CYCLE PATTERN

The status with the current of the FET channel shunt
3.5 A or less and with the FET channel output 100
mV or more continues for 180 milliseconds.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU

AC710634

START

No

Yes

Good

Malfunction

END

Monitoring condition met

Continuous failure
for 180 msec

No

Yes

Yes

No

No

FET* output < 100 mV

Yes

FET* current > 3.5 A

*FET : Field Effect Transistor

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-63

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. P0965 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 P0966: Clutch Cooling Flow 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 clutch cooling flow
solenoid circuit is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The clutch cooling flow 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)

• P0776: Clutch cooling flow solenoid system

(Drive current range out)

• P0777: Clutch cooling flow solenoid system

(Stuck)

• P0964: Clutch cooling flow solenoid system

(Open circuit)

• P0965: Clutch cooling flow solenoid system

(Overvoltage)

• P0967: Clutch cooling flow 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-64

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: 100 mV or

less. (180 millisecond)

.

OBD-II DRIVE CYCLE PATTERN

The FET channel output remains 100 mV or more for
180 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. P0966 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

.)

AC710637

START

No

Yes

Good

Malfunction

END

Monitoring condition met

Continuous failure
for 180 msec

No

Yes

No

Yes

FET* output < 100 mV

*FET : Field Effect Transistor