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Mitsubishi Lancer Evolution X. Manual - part 573

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-249

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: 650 r/min or more.
• Time since above engine condition: 1.5 seconds

or more.

• FET (Field Effect Transistor) of high side 1:

Switched off.

JUDGMENT CRITERIA

• FET output: 100 mV or less. (5 seconds)

OBD-II DRIVE CYCLE PATTERN

The FET channel output remains 100 mV or more for
5 seconds.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU
• Malfunction of power supply circuit (open circuit)

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991958 Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827 M.U.T.-III USB Cable
• MB991910 M.U.T.-III Main Harness A

AC710728

START

Good

Malfunction

END

Continuous failure
for 5 sec

Yes

Monitoring condition met

Yes

FET* output < 100 mV

*FET : Field Effect Transistor

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-250

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-15

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check the TC-SST-ECU power supply circuit
Refer to

P.22C-341

Q: Is the check result normal?

YES : Go to Step 3.
NO : Repair the TC-SST-ECU power supply circuit. (Refer

P.22C-341

.) After repairing the power supply

circuit, go to Step 3.

STEP 3. Check whether the DTC is reset.
After 10 or more seconds have passed with the engine idle sta-
tus, check that the DTC is reset.
Q: Is DTC No. P186D set?

YES : Replace the mechatronic assembly. (Refer to

P.22C-421

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

to Cope with Intermittent Malfunction

P.00-15

DTC P186E: High side 2 system (Voltage low range out)

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 high side 2 circuit is
normal.

DESCRIPTIONS OF MONITOR METHODS

The voltage of the high side 2 circuit is determined to
be too low.

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)

• P0966: Clutch cooling flow solenoid system

(Short to ground)

• P0967: Clutch cooling flow solenoid system

(Short to power supply)

• P2718: Clutch/shift pressure solenoid 1 system

(Open circuit)

• P2719: Clutch/shift pressure solenoid 1 system

(Overcurrent)

• P2720: Clutch/shift pressure solenoid 1 system

(Short to ground)

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-251

• P2721: Clutch/shift pressure solenoid 1 system

(Short to power supply)

• P2733: Clutch/shift switching solenoid 1, spool

stuck

• 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)

Sensor (The sensor below is determined to be

normal)

• Clutch cooling flow solenoid
• Clutch/shift pressure solenoid 1
• Clutch/shift switching solenoid 1

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: 650 r/min or more.
• Time since above engine condition: 1.5 seconds

or more.

• FET (Field Effect Transistor) of high side 2:

Switched off.

JUDGMENT CRITERIA

• FET output: 100 mV or less. (5 seconds)

OBD-II DRIVE CYCLE PATTERN

The FET channel output remains 100 mV or more for
5 seconds.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU
• Malfunction of power supply circuit (open circuit)

AC710728

START

Good

Malfunction

END

Continuous failure
for 5 sec

Yes

Monitoring condition met

Yes

FET* output < 100 mV

*FET : Field Effect Transistor

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-252

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991958 Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827 M.U.T.-III USB Cable
• MB991910 M.U.T.-III Main Harness A

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-15

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check the TC-SST-ECU power supply circuit
Refer to

P.22C-341

Q: Is the check result normal?

YES : Go to Step 3.
NO : Repair the TC-SST-ECU power supply circuit. (Refer

P.22C-341

.) After repairing the power supply

circuit, go to Step 3.

STEP 3. Check whether the DTC is reset.
After 10 or more seconds have passed with the engine idle sta-
tus, check that the DTC is reset.
Q: Is DTC No. P186E set?

YES : Replace the mechatronic assembly. (Refer to

P.22C-421

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

to Cope with Intermittent Malfunction

P.00-15

DTC P186F: High side 3 system (Voltage low range out)

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 high side 3 circuit is
normal.

DESCRIPTIONS OF MONITOR METHODS

The voltage of the high side 3 circuit is determined to
be too low.

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)

• P0753: Shift select solenoid 1 system (Open cir-

cuit)

• P0973: Shift select solenoid 1 system (Short to

ground)

• P0974: Shift select solenoid 1 system (Short to

power supply)

• P2727: Clutch/shift pressure solenoid 2 system

(Open circuit)

Content .. 571 572 573 574 ..