Mitsubishi Lancer Evolution X. Manual — part 565

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-217

DTC SET CONDITIONS <FUNCTIONAL
CHECK - SHIFT FORK 4 REQUESTED
BUT SHIFT FORK 3 MOVEMENT>

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.

• Requested shift fork: Shift fork 4.

JUDGMENT CRITERIA

• Shift fork position: − 6 mm (− 0.24 inch) [6th gear

side] or more, or 1.8 mm (0.071 inch) [neutral
position] or more, and initialized fork position −

shift fork 4 position: 2.5mm (0.098 inch) or less.
(200 millisecond)

.

OBD-II DRIVE CYCLE PATTERN
<FUNCTIONAL CHECK - SHIFT FORK 3
REQUESTED BUT SHIFT FORK 4
MOVEMENT>

The status of the shift fork position − 6 mm (− 0.24

inch) [6th gear side] or less, or with 1.8 mm (0.071
inch) [neutral position] or less and with the initialized
fork position − shift fork 3 position 2.5 mm (0.098

inch) or more continues for 200 millisecond.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU
• Malfunction of TC-SST shift fork

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. Monitoring unit No. check
(1) Check the freeze frame data (item No. 30 to No. 37).
(2) Check which monitoring unit (No. 163, No. 180, No. 188, or

No. 189) is set.

Q: Which monitoring unit is set, No. 163, No. 180, No. 188,

or No. 189?
No. 163 : Go to Step 4
Other than No. 163 : Go to Step 3

STEP 3. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive with shifting to each gear range.
(3) Check that the DTC is reset.
Q: Is DTC No.P184B 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

.)

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-218

STEP 4. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive in the 4th gear.
(3) Check that the DTC is reset.
Q: Is DTC No.P184B set?

YES : Go to Step 5.
NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 5. Scan tool Teach-In
(1) Carry out the Item No.3: Line pressure Test. (Refer to

Special Function (Teach-In Reference Table

P.22C-365

).)

(2) After Teach-In, check which result ("Yes" or "No") is

displayed in the Data list No. 101: Normal End. (Refer to
Special Function (Teach-In Reference Table

P.22C-365

).)

Q: Which is displayed, "Yes" or "No"?

"Yes" : Go to Step 6
"No" : DTC No. P181B: Carry out the troubleshooting for

the DTC No. P181B: Clutch 1 (Pressure low range
out). (Refer to

P.22C-109

.)

STEP 6. Scan tool Teach-In
(1) Carry out the Item No. 1: Plausibility check. (Refer to

Special Function (Teach-In Reference Table

P.22C-365

).)

(2) After Teach-In, check which result ("Yes" or "No") is

displayed in the Data list No. 101: Normal End. (Refer to
Special Function (Teach-In Reference Table

P.22C-365

).)

Q: Which is displayed, "Yes" or "No"?

"Yes" : Replace the transaxle assembly. (Refer to

P.22C-412

.)

"No" : Go to Step 7.

STEP 7. Replace the mechatronic assembly, and check if
the DTC is reset.
(1) Replace the mechatronic assembly. (Refer to

P.22C-421

.)

(2) Drive in the 4th gear.
(3) Check the DTC.
Q: Is DTC No. P184B set?

YES : Replace the transaxle assembly. (Refer to

P.22C-412

.)

NO : This diagnosis is complete.

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-219

DTC P1852: Shift Fork 1 or 2 opposite direction movement

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 movement of the shift
fork is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The movements of the shift fork 1 and 2 are deter-
mined to be abnormal.

.

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)

• P1836: Shift fork 1 malfunction
• P183D: Shift fork 2 malfunction
• P1844: Shift fork 3 malfunction
• P184B: Shift fork 4 malfunction

Sensor (The sensor below is determined to be

normal)

• Not applicable

.

LOGIC FLOW CHARTS (Monitor Sequence) <Functional check - move opposite
direction right side>

.

AC710720

START

No

Good

Malfunction

END

Continuous failure
for 250 msec

No

Yes

Yes

Monitoring condition met

Yes

No

Shift fork position
> 1.8 mm (0.071 inch)

DIAGNOSIS <TC-SST>

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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-220

DTC SET CONDITIONS <FUNCTIONAL
CHECK - MOVE OPPOSITE DIRECTION
RIGHT SIDE>

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.

• Shift fork 1 and 2 current gear: Neutral.
• Shift fork 1 and 2 target direction: 0 mm (0 inch)

or less.

JUDGMENT CRITERIA

• Shift fork 1 and 2 position: 1.8 mm (0.071 inch) or

more. (250 millisecond)

.

OBD-II DRIVE CYCLE PATTERN
<FUNCTIONAL CHECK - MOVE
OPPOSITE DIRECTION RIGHT SIDE>

The shift fork 1 and 2 positions remain 1.8 mm
(0.071 inch) or less for 250 millisecond.

.

LOGIC FLOW CHARTS (Monitor Sequence) <Functional check - move opposite
direction left side>

.

DTC SET CONDITIONS <FUNCTIONAL
CHECK - MOVE OPPOSITE DIRECTION
LEFT SIDE>

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.

• Shift fork 1 and 2 current gear: Neutral.
• Shift fork 1 and 2 target direction: 0 mm (0 inch)

or more.

JUDGMENT CRITERIA

• Shift fork 1 and 2 position: − 1.8 mm (− 0.071 inch)

or less. (250 millisecond)

.

AC710721

START

No

Good

Malfunction

END

Continuous failure
for 250 msec

No

Yes

Yes

Monitoring condition met

Yes

No

Shift fork position
< -1.8 mm (-0.071 inch)