Mitsubishi Lancer Evolution X. Manual — part 596
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-341
INSPECTION PROCEDURE 4: TC-SST-ECU power supply circuit malfunction
ETACS-ECU
IG1
RELAY
ENGINE
COMPARTMENT
RELAY
BOX
FUSIBLE
LINK
34
FUSIBLE
LINK
36
TRANSAXLE
ASSEMBLY
IGNITION
SWITCH (IG1)
NOTE
: THE TERMINAL NUMBERS DESCRIBED
IN THE CIRCUIT DIAGRAM AGREE WITH
THE NUMBERS MARKED ON THE
TRANSAXLE ASSEMBLY CONNECTOR AND
HARNESS SIDE CONNECTOR.
Power supply system circuit
AC902075AB
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-342
CAUTION
Whenever the ECU is replaced, ensure that the
CAN bus lines are normal.
.
COMMENTS ON TROUBLE SYMPTOM
TC-SST-ECU power supply circuit, ground circuit, or
TC-SST-ECU may have a problem.
.
PROBABLE CAUSES
• Defective battery
• Damaged harness wires and connectors
• Malfunction of the ETACS-ECU
• Malfunction of the shift lever-ECU
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. Check the battery.
Refer to GROUP 54A − Battery Test
.
Q: Is the battery in good condition?
YES : Go to Step 2.
NO : Charge or replace the battery.
STEP 2. Measure the resistance at B-107 TC-SST-ECU
connector.
Disconnect the connector, and measure the resistance
between terminal No. 19 and ground at the wiring harness side.
OK: Continuity exists. (2 Ω or less)
Q: Is the check result normal?
YES : Go to Step 5.
NO : Go to Step 3.
AC708949AO
Connector: A-13
AC709137
Connector: B-107
AD
B-107 (B)
AC708950
Connector: C-131
CN
AC708972BI
Connectors: C-309, C-317
C-309 (B)
C-317
ETACS-ECU
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-343
STEP 3. TC-SST-ECU connector check: B-107
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the defective connector.
STEP 4. Check the wiring harness between B-107
TC-SST-ECU connector terminal No. 19 and body ground.
Check the ground line for open circuit.
Q: Is the check result normal?
YES : Go to Step 5.
NO : Repair the wiring harness.
STEP 5. Measure the voltage at B-107 TC-SST-ECU
connector.
Disconnect the connector, and measure the voltage between
terminal No. 6 and ground at the wiring harness side.
OK: Battery positive voltage
Q: Is the check result normal?
YES : Go to Step 8.
NO : Go to Step 6.
STEP 6. Inspection of the intermediate connector and
TC-SST-ECU connector: A-13, B-107
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 7.
NO : Repair the defective connector.
STEP 7. Check the wiring harness between B-107
TC-SST-ECU connector terminal No. 6 and fusible link No.
36.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES : Go to Step 8.
NO : Repair the wiring harness.
STEP 8. Scan tool diagnostic trouble code
Check the ETACS diagnostic trouble code. (Refer to GROUP
54A − Troubleshooting
.)
Q: Is the DTC set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 9.
DIAGNOSIS <TC-SST>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-344
STEP 9. Measure the voltage at B-107 TC-SST-ECU
connector.
(1) Disconnect the connector, and measure the voltage
between terminal No. 11 and ground at the wiring harness
side.
(2) Turn the ignition switch to the "ON" position.
OK: Battery positive voltage
Q: Is the check result normal?
YES : Go to Step 12.
NO : Go to Step 10.
STEP 10. Inspection of the intermediate connector,
TC-SST-ECU connector, and ETACS-ECU connector: A-13,
C-131, B-107, C-317
Check for the contact with terminals.
Q: Is the check result normal?
YES : Go to Step 11.
NO : Repair the defective connector.
STEP 11. Check the wiring harness between B-107
TC-SST-ECU connector terminal No. 11 and C-317
ETACS-ECU connector terminal No. 5.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES : Go to Step 12.
NO : Repair the wiring harness.
STEP 12. Retest the system.
Q: Does a malfunction take place again?
YES : Replace the mechatronic assembly. (Refer to
.)
NO : Intermittent malfunction. (Refer to GROUP 00 − How
to Cope with Intermittent Malfunction
.)
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