Component Tests and General Diagnostics

HOW TO CHECK ECUs

1. Use the scan tool MB991958 and the SWS monitor kit to check ECUs.




2. The given ECUs can be checked by using the scan tool MB991958 and the SWS monitor kit.

NOTE: The "ECU COMM Check" function checks the communication status of ECUs. "NG" does not always mean ECU malfunction. If a malfunction is found by the "ECU COMM Check", proceed to "Symptom Procedure".