54A-DIAGNOSIS FUNCTION

DIAGNOSTIC FUNCTION

CHECK OF FREEZE FRAME DATA

When detecting fault and storing the DTC, the ECU connected to CAN bus line obtains the data before the determination of the DTC and the data when the DTC is determined, and then stores the ECU status of that time. By analyzing each data from scan tool, the troubleshooting can be performed more efficiently. The displayed items are as the table below.

DISPLAY ITEM LIST

Item No.	Item name	Content	Unit
01	Odometer	Total driving distance after the diagnostic trouble code is generated	mile^*
02	Ignition cycle	Number of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transition	Number of counts is displayed.
04	Accumulated minute	Cumulative time for current malfunction of diagnostic trouble code	min

note	^*: If a failure occurs to both the ASC-ECU and ETACS-ECU, 0000 mile or FFFF mile is displayed on the scan tool (M.U.T.-III).