Mitsubishi Lancer Evolution X. Manual — part 572
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DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-245
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): 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
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DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-246
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 5 or more seconds have passed with the engine idle sta-
tus, check that the DTC is reset.
Q: Is DTC No. P186B set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
DTC P186C: High side 3 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 3 circuit is
normal.
.
DESCRIPTIONS OF MONITOR METHODS
The high side 3 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)
• 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
.
![](/vehicles/winoney/ifonan/iri/quseawas.png)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-247
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: 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
![](/vehicles/winoney/ifonan/iri/gem.png)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-248
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 15 seconds with the engine idle status, check that the
DTC is reset.
Q: Is DTC No. P186C set?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
DTC P186D: High side 1 system (Voltage low range out)
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 voltage of the high side 1 circuit is determined to
be too low.
.
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
.
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