Mitsubishi Lancer Evolution X. Manual — part 561
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-201
LOGIC FLOW CHARTS (Monitor Sequence) <Functional check - Shift fork 2 requested
but shift fork 1 movement>
.
AC710710
START
No
Good
Malfunction
END
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes
No
Yes
No
Continuous failure
for 200 msec
Yes
Yes
No
No
Monitoring condition met
|Initialized fork position -
shift fork 2 position| < 2.5 mm
(0.098 inch)
Shift fork 1 position
1st gear side
Shift fork 1 position
< 6 mm (0.24 inch)
Shift fork 1 position
R gear side
Shift fork 1 position
> -6 mm (-0.24 inch)
No
Shift fork 1 position
neutral position
|Shift fork 1 position|
> 1.8 mm (0.071 inch)
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-202
DTC SET CONDITIONS <FUNCTIONAL
CHECK - SHIFT FORK 2 REQUESTED
BUT SHIFT FORK 1 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 2.
Judgment Criteria
• Shift fork position: 6 mm (0.24 inch) [1st gear
side] or less, or − 6 mm (− 0.24 inch) [reverse gear
side] or more, or 1.8 mm (0.071 inch) [neutral
position] or more, and initialized fork position −
shift fork 2 position: 2.5 mm (0.098 inch) or less.
(200 millisecond)
.
OBD-II DRIVE CYCLE PATTERN
<FUNCTIONAL CHECK - SHIFT FORK 2
REQUESTED BUT SHIFT FORK 1
MOVEMENT>
The status with the shift fork position 6 mm (0.24
inch) [1st gear side] or more, or with − 6 mm (− 0.24
inch) [reverse gear side] or less, or with 1.8 mm
(0.071 inch) [neutral position] or less and with the ini-
tialized fork position − shift fork 2 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
.) 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. 161, No. 174, No. 184, or
No. 185) is set.
Q: Which monitoring unit is set, No. 161, No. 174, No. 184,
or No. 185?
No. 161 : Go to Step 4
Other than No. 161 : Go to Step 3
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-203
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.P183D set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
STEP 4. Check whether the DTC is reset.
(1) Erase the DTC.
(2) Drive in the 3rd gear.
(3) Check that the DTC is reset.
Q: Is DTC No.P183D set?
YES : Go to Step 5.
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
STEP 5. Scan tool Teach-In
(1) Carry out the Item No.3: Line pressure Test. (Refer to
Special Function (Teach-In Reference Table
).)
(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
).)
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
.)
STEP 6. Scan tool Teach-In
(1) Carry out the Item No. 1: Plausibility check. (Refer to
Special Function (Teach-In Reference Table
).)
(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
).)
Q: Which is displayed, "Yes" or "No"?
"Yes" : Replace the transaxle assembly. (Refer to
.)
"No" : Go to Step 7.
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-204
STEP 7. Replace the mechatronic assembly, and check if
the DTC is reset.
(1) Replace the mechatronic assembly. (Refer to
(2) Drive in the 3rd gear.
(3) Check the DTC.
Q: Is DTC No.P183D set?
YES : Replace the transaxle assembly. (Refer to
.)
NO : This diagnosis is complete.
DTC P1844: Shift Fork 3 Malfunction
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 3 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The movement of the shift fork 3 is determined 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
• P184B: Shift fork 4 malfunction
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
LOGIC FLOW CHARTS (Monitor Sequence) <Functional check - blocked>
.
AC710675
START
No
Good
Malfunction
END
Yes
Malfunction criteria met
Yes
Monitoring condition met
No
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