Mitsubishi Evolution X. Manual — part 393
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-29
JUDGMENT CRITERIA <Rationality>
• Failure condition 1 or failure condition 2 (Refer to
Logic Flow Charts (Monitor Sequence) <Rational-
ity>). (500 millisecond)
.
OBD-II DRIVE CYCLE PATTERN
<RATIONALITY>
Each value of failure condition 1 or failure condition 2
(Logic Flow Charts (Monitor Sequence) <Rational-
ity>) returns to the normal value and remains in the
state for 500 milliseconds.
.
LOGIC FLOW CHARTS (Monitor Sequence) <Rationality - plausibility failure>
.
AC710601
No
Yes
Malfunction
No
Yes
Monitoring condition met
No
Yes
Yes
Engine speed signal
status = not SNA
Continuous failure
for 250 msec
Input shaft speed*
1
> 12,800 r/min
START
END
Yes
|Input shaft speed*
1
| > (min(max(engine speed,
input shaft target speed [current gear]*
1
,
input shaft target speed [target gear]*
1
) + 3,000 r/min,
12,800 r/min)
Good
No
No
*
1
:In case of input shaft 1 (odd) speed sensor monitor, this is speed of input shaft (odd).
In case of input shaft 2 (even) speed sensor monitor, this is speed of input shaft (even).
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-30
Check Conditions <Rationality plausibility fail-
ure>
• Voltage of battery: 8 V or more.
• Voltage of battery: 16.5 V or less.
JUDGMENT CRITERIA <Rationality plausibility
failure>
• Input shaft 1 (odd) speed: Refer to Logic Flow
Charts (Monitor Sequence) <Rationality plausibil-
ity failure>. (250 millisecond)
.
OBD-II DRIVE CYCLE PATTERN
<RATIONALITY PLAUSIBILITY FAILURE>
The value of the Logic Flow Charts (Monitor
Sequence) <Rationality plausibility failure> returns to
the normal value and remains in the state for 250 mil-
liseconds.
.
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. P0716 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P0717: Input shaft 1 (odd number gear axle) speed sensor system (Output current 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 input shaft 1 (odd num-
ber gear axle) speed sensor is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The output of the input shaft 1 (odd number gear
axle) speed sensor 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)
• P0715: Input shaft 1 (odd number gear axle)
speed sensor system (Output high range out)
• P0716: Input shaft 1 (odd number gear axle)
speed sensor system (Poor performance)
• P2766: Input shaft 2 (even number gear axle)
speed sensor system (Poor performance)
Sensor (The sensor below is determined to be
normal)
• Input shaft 2 (even number gear axle) speed sen-
sor
.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-31
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.
• Time after engine start: 400 millisecond or more.
JUDGMENT CRITERIA
• Sensor current: 4 mA or less. (500 millisecond)
.
OBD-II DRIVE CYCLE PATTERN
The sensor current remains 4 mA or more for 500
milliseconds.
.
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.
Sensor current < 4 mA
AC710596
START
No
Yes
Yes
No
Good
Malfunction
END
Monitoring condition met
No
Continuous failure
for 500 msec
Yes
No
Sensor current > 17 mA
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-32
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P0717 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P0725: Engine speed signal abnormality
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 receives the periodic communication
data from the engine control module via the CAN bus
lines, and checks the data for abnormality.
.
DESCRIPTIONS OF MONITOR METHODS
The engine speed signal from the engine control
module is determined to be abnormal.
.
PROBABLE CAUSES
• The CAN bus line is defective.
• Malfunction of crankshaft position sensor
• Malfunction of engine control module
• Malfunction of TC-SST-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using the scan tool, 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. Scan tool diagnostic trouble code
Check the engine diagnostic trouble code. (Refer to GROUP
13A
− Troubleshooting
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 3.
STEP 3. Check whether the DTC is reset.
Q: Is DTC No. P0725 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
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