Description of On-Board Diagnostics

DIAGNOSIS SYSTEM

Description
ECM controls the function of immobilizer on this vehicle. Data of the immobilizer or DTC can be read form DLC3 of the vehicle. When a trouble occurs in immobilizer, MIL does not light ON but DTC inspection is performed. Therefore when there seems to be a trouble with immobilizer, use TOYOTA hand-held tester or SST to check and troubleshoot it.