Confirmation Engine Racing Pattern
- Connect the OBD II scan tool or hand-held tester to the DLC3.
- Start engine and warm it up with all the accessories switched OFF until the water temperature is stable.
- Race the engine at 2,500 - 3,000 RPM for about 3 min.
- 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).