jjmm

Thanks, code58. That's very helpful.

I find this very helpful. http://www.clublexus.com/forums/rx-first-g...de-p1135-2.html Before I invest in ramps and a new A/F sensor, I would like to measure the resistance of the B1S1 sensor. The question is, which connector is for B1S1?

My car is RX300 2001. The A/F sensor Bank1 Sensor1 is supposed to on the side of the engine that is further away from the radiator. There are quite a few wires and connectors. I cannot tell which one is the A/F sensor. :( Is it easy to reach and to take out? Could any experts give me hints or pictures? B)