Mitsubishi Evolution X. Manual — part 413

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-109

DTC P1822: Shift Fork Position Sensor 1 System (Output 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 output of the shift fork
position sensor 1 is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The output of the shift fork position sensor 1 is deter-
mined 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)

• P1820: Shift fork position sensor 1 system (Volt-

age low range out)

• P1821: Shift fork position sensor 1 system (Volt-

age high range out)

• P1823: Shift fork position sensor 1 system (Neu-

tral)

• P1824: Shift fork position sensor 1 system (Poor

performance)

• P1836: Shift fork 1 malfunction

• P1852: Shift fork 1 or 2 opposite direction move-

ment

• P1855: Shift fork 3 or 4 opposite direction move-

ment

• P1857: Odd 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>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-110

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.

• Shift system status: Gear change mode (during

shift fork moving).

JUDGMENT CRITERIA

• Shift fork 1 position counter (digitized sensor

value):

−500 counts or less, or shift fork 1 position

counter (digitized sensor value): 500 counts or
more. (180 millisecond)

.

OBD-II DRIVE CYCLE PATTERN

The status with the shift fork 1 position counter (digi-
tized sensor value)

−500 counts or more, or with the

shift fork 1 position counter (digitized sensor value)
500 counts or less continues for 180 milliseconds.

.

PROBABLE CAUSES

• Malfunction of TC-SST-ECU

AC710681

START

No

Good

Malfunction

END

Continuous failure
for 180 msec

No

Yes

Yes

Yes

No

No

Shift fork position
counter < -500

Yes

Shift fork position
counter > 500

Monitoring condition met

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-111

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

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. P1822 set?

YES : Replace the TC-SST assembly. (Refer to

P.22C-341

.)

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

.)

DTC P1823: Shift Fork Position Sensor 1 System (Neutral)

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 1 is normal.

.

DESCRIPTIONS OF MONITOR METHODS

The shift fork position sensor 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)

• P1820: Shift fork position sensor 1 system (Volt-

age low range out)

• P1821: Shift fork position sensor 1 system (Volt-

age high range out)

• P1822: Shift fork position sensor 1 system (Out-

put range out)

• P1824: Shift fork position sensor 1 system (Poor

performance)

• P1836: Shift fork 1 malfunction

• P1852: Shift fork 1 or 2 opposite direction move-

ment

• P1855: Shift fork 3 or 4 opposite direction move-

ment

• P1857: Odd 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>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-112

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.

• Input shaft 1 (odd) speed: 500 r/min or more.

• Input shaft 2 (even) speed: 500 r/min or more.

• Shift fork 1 position: Neutral.

• Input shaft 2 (even) gear: Engaged.

• Engine speed − input shaft 2 speed: 50 r/min or

less.

JUDGMENT CRITERIA

• Calculated speed: 40 r/min or less. (500 millisec-

ond)

.

OBD-II DRIVE CYCLE PATTERN

The calculated speed remains 40 r/min 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

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

AC711383

START

No

Good

Malfunction

END

Monitoring condition met

Continuous failure
for 500 msec

No

Yes

Yes

Yes

No

Calculated input
shaft speed