Mitsubishi Lancer Evolution X. Manual — part 566
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-221
OBD-II DRIVE CYCLE PATTERN
<FUNCTIONAL CHECK - MOVE
OPPOSITE DIRECTION LEFT SIDE>
The shift fork 1 and 2 positions remain −1.8 mm
(−0.071 inch) or more for 250 millisecond.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
• Malfunction of valve body
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. Check whether the DTC is reset.
(1) Erase the DTC.
(2) With the engine idle status, operate the shift lever in the
following sequence: P → R → D → R → P. (Hold each range
for 1 second or more.)
(3) Check that the DTC is reset.
Q: Is the DTC No. P1852 set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-222
DTC P1855: Shift Fork 3 or 4 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 3 and 4 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-223
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 3 and 4 current gear: Neutral.
• Shift fork 3 and 4 target direction: 0 mm (0 inch)
or less.
JUDGMENT CRITERIA
• Shift fork 3 and 4 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 3 and 4 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 3 and 4 current gear: Neutral.
• Shift fork 3 and 4 target direction: 0 mm (0 inch)
or more.
JUDGMENT CRITERIA
• Shift fork 3 and 4 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)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-224
OBD-II DRIVE CYCLE PATTERN
<FUNCTIONAL CHECK - MOVE
OPPOSITE DIRECTION LEFT SIDE>
The shift fork 3 and 4 positions remain −1.8 mm
(− 0.071 inch) or more for 250 millisecond.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
• Malfunction of valve body
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. Check whether the DTC is reset.
After driving in the 4th gear, check that the DTC is reset.
Q: Is the DTC No. P1855 set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
DTC P1857: Odd number gear axle interlock
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 gear engagement is
normal.
.
DESCRIPTIONS OF MONITOR METHODS
The two gears are determined to be engaged in the
odd number gear range.
.
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)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
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