Mitsubishi Evolution X. Manual — part 422
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-145
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P1834 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P1835: Shift Fork Position Sensor 4 System (Poor performance)
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 shift fork position sen-
sor 4 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The shift fork position sensor 4 is determined 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)
• P1831: Shift fork position sensor 4 system (Volt-
age low range out)
• P1832: Shift fork position sensor 4 system (Volt-
age high range out)
• P1833: Shift fork position sensor 4 system (Out-
put range out)
• P1834: Shift fork position sensor 4 system (Neu-
tral)
• P184B: Shift fork 4 malfunction
• P1852: Shift fork 1 or 2 opposite direction move-
ment
• P1855: Shift fork 3 or 4 opposite direction move-
ment
• P1858: Even number gear axle interlock
• P1876: Gear block 1st
• P1877: Gear block 2nd
• P1878: Gear block 3rd
• P1879: Gear block 4th
• P187A: Gear block 5th
• P187B: Gear block 6th
• P187C: Gear block reverse
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
DIAGNOSIS <TC-SST>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-146
LOGIC FLOW CHARTS (Monitor Sequence) <Shift fork 4 current gear: 4th gear>
.
DTC SET CONDITIONS <SHIFT FORK 4
CURRENT GEAR: 4TH GEAR>
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.
• Input shaft 2 (even) speed: 500 r/min or more.
• Shift fork 4 current gear: 4th gear.
• Synchro (2nd gear) slip speed: 80 r/min or more.
• Requested shift fork: Not shift fork 4.
JUDGMENT CRITERIA
• Shift fork 4 position: 6 mm (0.24 inch) or less.
(250 millisecond)
.
OBD-II DRIVE CYCLE PATTERN <SHIFT
FORK 2 CURRENT GEAR: 4TH GEAR>
The travel distance of the shift fork 4 remains 6 mm
(0.24 inch) or more for 250 milliseconds.
.
AC710682
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 250 msec
No
Yes
Yes
Yes
No
Shift fork position
< 6 mm (0.24 inch)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-147
LOGIC FLOW CHARTS (Monitor Sequence) <Shift fork 4 current gear: 2nd gear>
.
DTC SET CONDITIONS <SHIFT FORK 4
CURRENT GEAR: 2ND GEAR>
Check Conditions
• Voltage of battery: 8 volts or more.
• Voltage of battery: 16.5 volts or less.
• Engine speed: 500 r/min or more.
• Time since above engine condition: 400 millisec-
ond or more.
• Input shaft 2 (even) speed: 500 r/min or more.
• Shift fork 4 current gear: 2nd gear.
• Synchro (4th gear) slip speed: 80 r/min or more.
• Requested shift fork: not shift fork 4.
JUDGMENT CRITERIA
• Shift fork 4 position: −6 mm (−0.24 in) or more.
(250 millisecond)
.
OBD-II DRIVE CYCLE PATTERN <SHIFT
FORK 2 CURRENT GEAR: 3RD GEAR>
The travel distance of the shift fork 4 remains
−6 mm
(
−0.24 inch) or less for 250 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.
AC710683
START
No
Good
Malfunction
END
Monitoring condition met
Continuous failure
for 250 msec
No
Yes
Yes
Yes
No
Shift fork position
> -6 mm (-0.24 inch)
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-148
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P1835 set?
YES : Replace the TC-SST assembly. (Refer to
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
DTC P1836: Shift Fork 1 Malfunction
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 1 is normal.
.
DESCRIPTIONS OF MONITOR METHODS
The movement of the shift fork 1 is determined 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)
• P183D: Shift fork 2 malfunction
• P1844: Shift fork 3 malfunction
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
LOGIC FLOW CHARTS (Monitor Sequence) <Functional check - blocked>
.
AC710675
START
No
Good
Malfunction
END
Yes
Malfunction criteria met
Yes
Monitoring condition met
No
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