Mitsubishi Lancer Evolution X. Manual - part 569

 

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Mitsubishi Lancer Evolution X. Manual - part 569

 

 

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-233

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 1 switch: ON.

JUDGMENT CRITERIA

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

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

.

OBD-II DRIVE CYCLE PATTERN

The status with the FET switch ON and with the FET 
channel output 100 mV or more continues for 1 sec-
ond.

.

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

AC710726

START

No

Good

Malfunction

END

No

Yes

Yes

Yes

No

Monitoring condition met

FET* switched off

Yes

No

FET* output < 100 mV

Continuous failure
for 1 sec

*FET : Field Effect Transistor

on

AB

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-234

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 or more seconds have passed with the engine idle sta-
tus, check that the DTC is reset.
Q: Is DTC No. P1863 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 P1864: High side 1 system (Short to power supply)

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 1 circuit is 
normal.

.

DESCRIPTIONS OF MONITOR METHODS

The high side 1 circuit is determined to be short to 
power supply.

.

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)

• P0758: Shift select solenoid 2 system (Open cir-

cuit)

• P0976: Shift select solenoid 2 system (Short to 

ground)

• P0977: Shift select solenoid 2 system (Short to 

power supply)

• 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)

• P0962: Line pressure solenoid system (Short to 

ground)

• P0963: Line pressure solenoid system (Short to 

power supply)

• P0968: Shift/cooling switching solenoid system 

(Open circuit)

• P0970: Shift/cooling switching solenoid system 

(Short to ground)

• P0971: Shift/cooling switching solenoid system 

(Short to power supply)

Sensor (The sensor below is determined to be 

normal)

• Shift select solenoid 2
• Line pressure solenoid
• Shift/cooling switching solenoid

.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-235

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 1 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-236

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. P1864 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 P1866: High side 2 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 2 circuit is 
normal.

.

DESCRIPTIONS OF MONITOR METHODS

The supply current to the high side 2 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)

• 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)

• 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

.

 

 

 

 

 

 

 

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