Mitsubishi Lancer Evolution X. Manual — part 597

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-345

INSPECTION PROCEDURE 5: The shift lever does not operate.

.

COMMENTS ON TROUBLE SYMPTOM

The transaxle control cable, shift lever assembly, or
transaxle assembly may have a problem.
NOTE: Before performing this diagnosis, check that
the stoplight illuminates when the brake pedal is
depressed.
If the stoplight does not illuminate, check that the fol-
lowing items are normal. Then perform this diagno-
sis.

.

•

Open circuit or short to ground (including blown
fuse) in stoplight switch system (power supply cir-
cuit)

•

Stoplight switch system (output circuit) is shorted
to ground.

•

Improper installation of stoplight switch

•

Malfunction of stoplight switch

.

PROBABLE CAUSES

• Malfunction of the transaxle control cable
• Malfunction of the shift lever assembly
• Malfunction of the transaxle assembly

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver

AC901771

Shift lock system circuit

STOP
LAMP
SWITCH

SHIFT
LEVER

SHIFT LOCK
SOLENOID

HIGH SIDE
SWITCH

LEVER
POSITION SENSOR

CPU

AB

AC708951CX

Connector: C-35

AC708950

Connectors: C-48, C-130

CX

C-130 (BR)

C-48

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-346

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991958 Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827 M.U.T.-III USB Cable
• MB991910 M.U.T.-III Main Harness A

STEP 1. Scan tool data list.
Item No.5: Brake SW (Refer to data list reference table

P.22C-359

.)

Q: Is the check result normal?

YES : Go to Step 7.
NO : Go to Step 2.

STEP 2. Shift lever-ECU connector check: C-35
Check for the contact with terminals.
Q: Is the check result normal?

YES : Go to Step 3.
NO : Repair the defective connector.

STEP 3. Measure the voltage at C-35 shift lever-ECU
connector.
Disconnect the connector, and measure the voltage between
terminal No.4 and ground at the wiring harness side.

• OK: 1 V or less (brake pedal released)
• OK: System voltage (brake pedal depressed)

Q: Is the check result normal?

YES : Go to Step 6.
NO : Go to Step 4.

STEP 4. Inspection of the stop light switch connector,
intermediate connector: C-48, C-130
Check for the contact with terminals.
Q: Is the check result normal?

YES : Go to Step 5.
NO : Repair the defective connector.

STEP 5. Check the wiring harness between C-48 stop light
switch connector terminal No.1 and C-35 shift lever-ECU
connector terminal No.4.
Check the output line for open or short circuit.
Q: Is the check result normal?

YES : Go to Step 6.
NO : Repair the wiring harness.

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-347

STEP 6. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the shift lever assembly. (Refer to

P.22C-404

.)

NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 7. Key interlock mechanism check
Refer to

P.22C-401

.

Q: Is the check result normal?

YES : Go to Step 8.
NO : Adjust the key interlock mechanism. (Refer to

P.22C-401

.)

STEP 8. Shift lever operation check
(1) Disconnect the connection of the shift lever assembly and

the transaxle control cable.

(2) Turn the ignition switch to the ON position. Check that the

shift lever can be moved to each range when the brake
pedal is depressed.

Q: Is the check result normal?

YES : Go to Step 9.
NO : Replace the shift lever assembly. (Refer to

P.22C-404

.)

STEP 9. Transaxle control cable check
(1) Connect the connection of the shift lever assembly and the

transaxle control cable.

(2) Disconnect the connection of the transaxle assembly and

the transaxle control cable.

(3) Turn the ignition switch to the ON position. Check that the

shift lever can be moved to each range when the brake
pedal is depressed.

Q: Is the check result normal?

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

P.22C-421

.)

NO : Check the transaxle control cable for installation

condition, and repair or replace if necessary.(Refer to

P.22C-404

.)

DIAGNOSIS <TC-SST>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-348

INSPECTION PROCEDURE 6: Gears cannot be changed with the manual mode.

CAUTION

Whenever the ECU is replaced, ensure that the
CAN bus lines are normal.

.

COMMENTS ON TROUBLE SYMPTOM

The CAN bus lines, shift lever assembly, or mecha-
tronic assembly may have a problem.

.

PROBABLE CAUSES

• Malfunction of the CAN bus lines
• Malfunction of the shift lever assembly
• Malfunction of the mechatronic assembly

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB991958 Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827 M.U.T.-III USB Cable
• MB991910 M.U.T.-III Main Harness A

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-15

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Scan tool data list.
Shift lever item No.1: Lever position (Refer to

P.22C-359

).

(1) Confirm that "Manual" is displayed when the shift lever

position is in the manual mode.

(2) Confirm that "+" is displayed when the shift lever position is

upshifted and held, and "-" is displayed when the shift lever
position is downshifted and held.

Q: Is the check result normal?

YES : Go to Step 3.
NO : Replace the shift lever assembly. (Refer to

P.22C-404

.)

STEP 3. Retest the system.
Q: Does a malfunction take place again?

YES : Replace the mechatronic assembly. (Refer to

P.22C-421

.)

NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

.)