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-III Operating Instructions)




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" (Refer to SYMPTOM CHART Symptom Charts).