Lancer L4-2.4L (4B12) (2009)
Q: Does scan tool MB991958 screen correspond to the illustration?
YES : Repair the wiring harness between joint connector (CAN1) C-06 and WCM connector C-09.
NO : Check WCM connector C-09, and repair if necessary. If the WCM connector is in good condition, replace the WCM.
STEP 27. Using scan tool MB991958, diagnose the CAN bus line. (checking the SRS-ECU for internal failure)
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 SRS-ECU connector C-122.
2. Connect scan tool MB991958 to the data link connector.
3. Turn the ignition switch to the "ON" position.