How to Check ECU's

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




SWS monitor kit-compatible ECU's and their conditions

NOTE:
- *1: If the ignition switch is turned to the "LOCK" (OFF) or "ACC" when "NG" is displayed beside the "ETACS ECU" or the signal request line is abnormal, the scan tool shows "NG" beside the "COLUMN ECU".
- *2: If the scan tool shows "NG" beside the "ETACS ECU", it also shows "NG" beside the "FRONT ECU".