Lancer Evolution L4-2.0L Turbo (4B11T/C) (2010)
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4. Diagnose CAN bus lines, and check if the scan tool MB991958 screen is as shown in the figure.
OK: The display of the scan tool MB991958 is as shown in the figure.
Q: Does scan tool MB991958 screen correspond to the illustration?
YES : Repair the wiring harness between ASC-ECU connector A-05 and joint connector (CAN3) C-127.
NO : Check ASC-ECU connector A-05, and repair if necessary. If the ASC-ECU connector is in good condition, replace the ASC-ECU.
STEP 14. Using scan tool MB991958, diagnose the CAN bus line. (checking the ECM for internal short to ground)
