Mitsubishi Lancer Evolution X. Manual - part 571

 

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Mitsubishi Lancer Evolution X. Manual - part 571

 

 

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-241

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.
• High side 2 switch: OFF.

JUDGMENT CRITERIA

• FET (Field Effect Transistor): Can’t be switched 

off. (12 seconds)

.

OBD-II DRIVE CYCLE PATTERN

The FET switch remains OFF for 12 seconds.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU

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

AC710727

START

No

Good

Malfunction

END

Continuous failure
for 12 sec

No

Yes

Yes

Monitoring condition met

Yes

No

FET* can't switched off

*FET : Field Effect Transistor

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-242

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 whether the DTC is reset.
After 15 seconds with the engine idle status, check that the 
DTC is reset.
Q: Is DTC No. P1868 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 P186A: High side 3 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 high side 3 circuit is 
normal.

.

DESCRIPTIONS OF MONITOR METHODS

The supply current to the high side 3 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)

• 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)

• P2728: Clutch/shift pressure solenoid 2 system 

(Overcurrent)

• P2729: Clutch/shift pressure solenoid 2 system 

(Short to ground)

• P2730: Clutch/shift pressure solenoid 2 system 

(Short to power supply)

• P2809: Clutch/shift switching solenoid 2, spool 

stuck

• P2812: Clutch/shift switching solenoid 2 system 

(Open circuit)

• P2814: Clutch/shift switching solenoid 2 system 

(Short to ground)

• P2815: Clutch/shift switching solenoid 2 system 

(Short to power supply)

• P181B: Clutch 1 (Pressure low range out)
• P181C: Clutch 1 (Pressure high range out)
• P181E: Clutch 2 (Pressure low range out)
• P181F: Clutch 2 (Pressure high range out)

Sensor (The sensor below is determined to be 

normal)

• Shift select solenoid 1
• Clutch/shift pressure solenoid 2
• Clutch/shift switching solenoid 2

.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-243

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.
• High side 3 switch: ON.

JUDGMENT CRITERIA

• FET (Field Effect Transistor) current: 8.1 A or 

more, and FET (Field Effect Transistor) output: 
100 mV or less. (1 second)

.

OBD-II DRIVE CYCLE PATTERN

The status with the current of the FET channel shunt 
8.1 A or less and with the FET channel output 100 
mV or more continues for 1 second.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU

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

AC710725

START

No

Good

Malfunction

END

No

Yes

Yes

Yes

No

Monitoring condition met

FET* current > 8.1 A

Yes

No

FET* output < 100 mV

Continuous failure
for 1 sec

*FET : Field Effect Transistor

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-244

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 whether the DTC is reset.
After 5 seconds with the engine idle status, check that the DTC 
is reset.
Q: Is DTC No. P186A 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 P186B: High side 3 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 high side 3 circuit is 
normal.

.

DESCRIPTIONS OF MONITOR METHODS

The high side 3 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)

• 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)

• P2728: Clutch/shift pressure solenoid 2 system 

(Overcurrent)

• P2729: Clutch/shift pressure solenoid 2 system 

(Short to ground)

• P2730: Clutch/shift pressure solenoid 2 system 

(Short to power supply)

• P2809: Clutch/shift switching solenoid 2, spool 

stuck

• P2812: Clutch/shift switching solenoid 2 system 

(Open circuit)

• P2814: Clutch/shift switching solenoid 2 system 

(Short to ground)

• P2815: Clutch/shift switching solenoid 2 system 

(Short to power supply)

• P181B: Clutch 1 (Pressure low range out)
• P181C: Clutch 1 (Pressure high range out)
• P181E: Clutch 2 (Pressure low range out)
• P181F: Clutch 2 (Pressure high range out)

Sensor (The sensor below is determined to be 

normal)

• Shift select solenoid 1
• Clutch/shift pressure solenoid 2
• Clutch/shift switching solenoid 2

.

 

 

 

 

 

 

 

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