Mitsubishi Evolution X. Manual — part 399
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-53
DTC P0960: Line Pressure Solenoid System (Open circuit)
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 line pressure solenoid
circuit is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The line pressure solenoid circuit is determined to be
open.
.
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)
• P0746: Line pressure solenoid system (Drive cur-
rent range out)
• P0961: Line pressure solenoid system (Overvolt-
age)
• P0962: Line pressure solenoid system (Short to
ground)
• P0963: Line pressure solenoid system (Short to
power supply)
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
LOGIC FLOW CHARTS (Monitor Sequence)
.
AC710629
START
No
Yes
Yes
Good
Malfunction
END
No
No
Yes
FET* output > 1 V
*FET : Field Effect Transistor
Monitoring condition met
Continuous failure
for 10 sec
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-54
DTC SET CONDITIONS
Check Conditions
• Voltage of battery: 8 V or more.
• Voltage of battery: 16.5 V or less.
JUDGMENT CRITERIA
• FET (Field Effect Transistor) output: 1 V or more.
(10 seconds)
.
OBD-II DRIVE CYCLE PATTERN
The FET channel output remains 1 V or less for 10
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.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0960 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P0961: Line Pressure Solenoid System (Overcurrent)
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 line pressure solenoid
circuit is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The supply current to the line pressure solenoid is
determined to be overcurrent.
.
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)
• P0746: Line pressure solenoid system (Drive cur-
rent range out)
• P0960: Line pressure solenoid system (Open cir-
cuit)
• P0962: Line pressure solenoid system (Short to
ground)
• P0963: Line pressure solenoid system (Short to
power supply)
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-55
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.
.
JUDGMENT CRITERIA
• FET (Field Effect Transistor) current: 3.5 A or
more, and FET (Field Effect Transistor) output:
100 mV or less (10 times).
.
OBD-II DRIVE CYCLE PATTERN
The current of the FET channel shunt is 3.5 A or
less, and the FET channel output is 100 mV or more.
.
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.
AC710630
START
No
Yes
Yes
Good
Malfunction
END
No
No
Yes
FET* currentl > 3.5 A
FET* output < 100 mV
Yes
No
*FET : Field Effect Transistor
Monitoring condition met
Continuous failure
for 10 times
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-56
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0961 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P0962: Line Pressure Solenoid System (Short to ground)
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 line pressure solenoid
circuit is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The line pressure solenoid circuit is determined to be
short to ground.
.
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)
• 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)
• P0963: Line pressure solenoid system (Short to
power supply)
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
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