DIAGNOSIS FUNCTION



CHECK OF FREEZE FRAME DATA


The freeze frame data can be checked by using the M.U.T.-III.

When detecting fault and storing the diagnosis code, the ECU connected to CAN bus line obtains the data before the determination of the diagnosis code and the data when the diagnosis code is determined, and then stores the ECU status of that time. By analysing each data from M.U.T.-III, the troubleshooting can be performed more efficiently. The displayed items are as the table below.

Display item list
Item No.
Item name
Data item
Unit
1
Odometer
Total driving distance after the diagnosis code is generated
km
2
Ignition cycle
Number of times the ignition switch is turned "ON" or "LOCK (OFF)" after the past failure transition
Number of counts is displayed.
3
Elapsed time after failure
Total elapsed time after a diagnosis code is generated
min*
4
Current trouble accumulative time
Cumulative time for current malfunction of diagnosis code
min
note *: Total elapsed time can be stored up to 65,534 minutes (45.5 days). The display of M.U.T.-III is fixed to 65,534 minutes after 65,534 minutes have elapsed. Or, if the battery is disconnected, the total elapsed time cannot be measured properly. Thus, 65,535 minutes (null value) is displayed. Because it is calculated based on the ETACS-ECU information, the correct display may not be shown if the ETACS-ECU has had a timeout.