Mitsubishi Evolution X. Manual — part 464

DIAGNOSIS <SHIFT LEVER>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-313

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The back-up light, ETACS-ECU, or shift lever-ECU
may have a problem.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the back-up light

• Damaged harness wires and connectors

• Malfunction of the shift lever-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.

AC705170AM

Connector: C-27

AC708950

Connectors: C-43, C-47

C-43 (B)

C-47

AC708972BK

Connectors: C-304, C-309, C-311

C-304

C-317

C-309 (B)

C-313, C-317

C-311

C-313

ETACS-ECU

AC708955AL

Connector: D-17

D-17 (BR)

AC708970AV

Connectors: F-08, F-22, F-27

F-22 (GR)

F-08 (GR)

F-27

DIAGNOSIS <SHIFT LEVER>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-314

STEP 2. Scan tool actuator test
Item No.2: Back-up light (Refer to Special Function (Actuator
Test Reference Table

P.22C-325

Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

NO : Go to Step 3.

STEP 3. Scan tool diagnostic trouble code
Check the ETACS diagnostic trouble code. (Refer to GROUP
54A

− Troubleshooting

P.54A-582

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 4.

STEP 4. Bulb check
Check if the bulb of the back-up light which does not illuminate
is normal.
Q: Is the check result normal?

YES : Go to Step 5.
NO : Replace the bulb which does not illuminate.

STEP 5. Measure the resistance at F-08 back-up light (RH)
connector and F-22 back-up light (LH) connector.
Disconnect the connector of the light which does not illuminate,
and measure the resistance between the connector terminal
No. 2 and ground at the wiring harness side.

OK: Continuity exists. (2

Ω or less)

Q: Is the check result normal?

YES : Go to Step 8.
NO : Go to Step 6.

STEP 6. Inspection of the back-up light (RH) connector,
back-up light (LH) connector, and intermediate connector:
F-08, F-22, F-27
Check for the contact with the connector terminals of the light
which does not illuminate.
Q: Is the check result normal?

YES : Go to Step 7.
NO : Repair the defective connector.

DIAGNOSIS <SHIFT LEVER>

TSB Revision

TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)

22C-315

STEP 7. Check the wiring harness between F-08 back-up
light (RH) connector terminal No. 2 and body ground, and
between F-22 back-up light (RH) connector terminal No. 2
and body ground.
Check the ground harness of the light which does not illuminate
for open circuit.
Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

NO : Repair the wiring harness.

STEP 8. Measure the voltage at F-08 back-up light (RH)
connector and F-22 back-up light (LH) connector.
(1) Disconnect the connector of the light which does not

illuminate, and measure the voltage between the connector
terminal No. 3 and ground at the wiring harness side.

(2) Turn the ignition switch to the "ON" position.
(3) Place the shift lever to the R range.

OK: Battery positive voltage

Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

NO : Go to Step 9.

STEP 9. Inspection of J/C (4), intermediate connector, shift
lever assembly connector, ETACS-ECU connector, and
back-up light connector: C-43, C-47, C-27, C-304, C-311,
C-313, D-17, F-08, F-22, F-27
Check for the contact with the connector terminals of the light
which does not illuminate.
Q: Is the check result normal?

YES : Go to Step 10.
NO : Repair the defective connector.

STEP 10. Check the wiring harness between F-08 back-up
light (RH) connector terminal No. 3 and C-313 ETACS-ECU
connector terminal No. 4, and between F-22 back-up light
(RH) connector terminal No. 3 and C-313 ETACS-ECU
connector terminal No. 4.
Check the power supply line of the light which does not illumi-
nate for open or short circuit.
Q: Is the check result normal?

YES : Go to Step 11.
NO : Repair the wiring harness.