Description of On-Board Diagnostics
DIAGNOSIS SYSTEMDescription
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 on immobilizer, MIL does not light up but DTC inspection is performed.
Therefore when there seems to be a trouble on immobilizer, use LEXUS hand-held tester or SST to check and troubleshoot it.