Lancer L4-2.4L (4B12) (2009)
NO : Check AWC-ECU connector C-51, and repair if necessary. If the AWC-ECU connector is in good condition, replace the AWC-ECU.
STEP 14. Check the wiring harness between joint connector (CAN2) C-05 and ETACS-ECU connector C-301 for line-to-line short. Measure
the resistance at joint connector (CAN2) C-05.
1. Disconnect joint connector (CAN2) and ETACS-ECU connector, and check that there is continuity at the harness side of joint connector (CAN2).
2. Check that there is continuity between joint connector (CAN2) terminals 6 and 19.
OK: No continuity
Q: Is the check result normal?
YES : Go to Step 20.
NO : Repair the wiring harness between ETACS-ECU connector C-301 and joint connector (CAN2) C-05.
STEP 15. Using scan tool MB991958, diagnose the CAN bus line. (checking the ASC-ECU [vehicles with ASC] or ABS-ECU [vehicles with ABS
(Except vehicles with ASC)] for internal short)
CAUTION:
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Strictly observe the specified wiring harness repair procedure.
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To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.
1. Disconnect ASC-ECU connector A-51 [vehicles with ASC] or ABS-ECU connector A-03 [vehicles with ABS (Except vehicles with ASC)].
2. Connect scan tool MB991958 to the data link connector.
3. Turn the ignition switch to the "ON" position.