Confirmation Engine Racing Pattern

CONFIRMATION ENGINE RACING PATTERN
a. Connect the OBD II scan tool or TOYOTA hand-held tester to the DLC3.
b. Start engine and warm it up with all the accessories switched OFF until the water temperature is stable.
c. Race the engine at 2,500 - 3,000 rpm for about 3 mm.
d. When racing the engine at 3,000 rpm for 2 sec. and 2,000 rpm for 2 sec. alternately, check the waveform of the heated oxygen sensor (bank 1 sensor 2).