FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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How to Check ECUs

HOW TO CHECK ECUs





1. Use the scan tool and the SWS monitor kit to check ECUs. (Refer to MUT-II Reference Manual)
2. The following ECUs can be checked by using the scan tool and the SWS monitor kit.

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