Mitsubishi Evolution X. Manual — part 439
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-213
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P186C set?
YES : Replace the TC-SST 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
.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-214
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.
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• FET (Field Effect Transistor) of high side 1:
Switched off.
JUDGMENT CRITERIA
• FET output: 100 mV or less. (5 seconds)
.
OBD-II DRIVE CYCLE PATTERN
The FET channel output remains 100 mV or more for
5 seconds.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
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.
AC710728
START
No
Good
Malfunction
END
Continuous failure
for 5 sec
No
Yes
Yes
Monitoring condition met
Yes
No
FET* output < 100 mV
*FET : Field Effect Transistor
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-215
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P186D set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P186E: High side 2 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 2 circuit is
normal.
.
DESCRIPTIONS OF MONITOR METHODS
The voltage of the high side 2 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)
• 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)
• P1859: Disengagement too late with clutch 1
Sensor (The sensor below is determined to be
normal)
• Clutch cooling flow solenoid
• Clutch/shift pressure solenoid 1
• Clutch/shift switching solenoid 1
.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-216
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.
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• FET (Field Effect Transistor) of high side 2:
Switched off.
JUDGMENT CRITERIA
• FET output: 100 mV or less. (5 seconds)
.
OBD-II DRIVE CYCLE PATTERN
The FET channel output remains 100 mV or more for
5 seconds.
.
PROBABLE CAUSES
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
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.
AC710728
START
No
Good
Malfunction
END
Continuous failure
for 5 sec
No
Yes
Yes
Monitoring condition met
Yes
No
FET* output < 100 mV
*FET : Field Effect Transistor
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