The only recommended way of disabling the ETC system is to disconnect terminal 27 from the ABS/ETC Control Module connector YE98, circuit 1427, Black/White wire (actual torque). This is to be achieved by withdrawing terminal 27 from connector YE98 and taping the wire back to the main wiring harness. This will disable the ETC system while maintaining normal ABS operation.
If the ETC system is disabled, the TRAC OFF warning lamp in the instrument cluster will be permanently illuminated when the ignition is on and Diagnostic Trouble Code 74 will be logged. At no time must the ‘TRAC OFF’ warning lamp be disconnected as its function is to advise the driver that this safety feature is not available.