Inspection Procedure Using OBDII Scan Tool

Detecting Condition and Trouble Area

System Check Driving Pattern
Purpose of driving pattern
(a) To simulate DTC detecting condition after DTC is recorded.
(b) To check that the malfunction is corrected when the repair is completed confirming that DTC is no longer detected.





(1) Connect OBD II scan tool or LEXUS hand-held tester to DLC3.
(2) Start and warm up engine with all accessories switched OFF.
(3) Run vehicle at 70 ~ 90 km/h (43 ~ 56 mph) for 3 minutes or more.
(4) Idle engine for about 2 minutes.
(5) Do steps (3) and (4) again.
(6) Check "READINESS TESTS" mode on OBD II scan tool or LEXUS hand-held tester. If "COMPL" is displayed and the MIL does not light up, system is normal. If "INCMPL" is displayed and MIL does not light up, run vehicle step (5) for some times and check it.

HINT: "INCMPL" is displayed when either condition (a) or (b) exists.
(a) System check is incomplete.
(b) There is a malfunction in the system.
If there is a malfunction in system, the MIL will light up after steps (2) to (5) above are done again.

NOTICE: If the conditions in this test are not strictly followed, detection of malfunction will not be possible.





Wiring Diagram











Inspection Procedure