Mitsubishi Evolution X. Manual — part 463
DIAGNOSIS <SHIFT LEVER>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-309
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: The scan tool cannot communicate with the shift lever-ECU.
CAUTION
Whenever the ECU is replaced, ensure that the
CAN bus lines are normal.
.
COMMENTS ON TROUBLE SYMPTOM
The CAN bus line, shift lever-ECU power supply cir-
cuit, or shift lever-ECU may have a problem.
.
PROBABLE CAUSES
• Wrong M.U.T.-III wiring harness
• The CAN bus line is defective.
• Malfunction of the shift lever-ECU power supply
circuit
• Malfunction of the shift lever-ECU
• ECU malfunction of other system
STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Check and repair the shift lever-ECU power supply
circuit. (Refer to
.)
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
.)
INSPECTION PROCEDURE 2: Shift indicator light does not illuminate.
CPU
LOW SIDE
SWITCH
LOW SIDE
SWITCH
LOW SIDE
SWITCH
LOW SIDE
SWITCH
LOW SIDE
SWITCH
SHIFT LEVER
POSITION
INDICATOR
PANEL
SHIFT
LEVER
Shift lever position indicator panel circuit
DIAGNOSIS <SHIFT LEVER>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-310
CAUTION
Whenever the ECU is replaced, ensure that the
CAN bus lines are normal.
.
COMMENTS ON TROUBLE SYMPTOM
The shift indicator light or shift lever-ECU may have a
problem.
.
PROBABLE CAUSES
• Malfunction of the shift indicator 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
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Scan tool service data
Item No. 1: Shift lever position (Refer to Service Data Refer-
ence Table
.)
Q: Is the check result normal?
YES : Go to Step 3.
NO : Replace the shift lever assembly. (Refer to
.)
STEP 3. Scan tool actuator test
Item No. 1: Shift indicator (Refer to Special Function (Actuator
Test Reference Table
Q: Is the check result normal?
YES : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
NO : Go to Step 4.
AC705170AN
Connector: C-27-1
DIAGNOSIS <SHIFT LEVER>
TSB Revision
TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-311
STEP 4. Inspection of the floor console panel assembly
connector: C-27-1
Check for the contact with terminals.
Q: Is the check result normal?
YES : Replace the floor console panel assembly. (Refer to
GROUP 52A
− Floor Console Assembly
NO : Repair the defective connector.
DIAGNOSIS <SHIFT LEVER>
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TWIN CLUTCH- SPORTRONIC SHIFT TRANSMISSION (TC-SST)
22C-312
INSPECTION PROCEDURE 3: Back-up light does not illuminate.
IGNITION
SWITCH (IG1)
ETACS-ECU
IG1
RELAY
CPU
SHIFT LEVER
SHIFT LEVER
POSITION
SENSOR (R)
HIGH SIDE
SWITCH (R)
BACKUP
LIGHT
(LH)
(RH)
JOINT
CONNECTOR
(4)
JOINT
CONNECTOR
(4)
FUSIBLE
LINK
34
Backup lamp switch system circuit
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