HO2S (front) signal (except for California emission regulation applicable model)

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

PCM terminals

2AG(+)-2AA(-)

Oscilloscope setting

0.2 V/DIV (Y), 500 ms/DIV (X), DC range

Vehicle condition

Idle after warm up (engine speed approx. 650 rpm, no load)

Fig 1: Inspection Graph Of HO2S (Front) Signal (Except For California Emission Regulation Applicable Model) Using Oscilloscope
Courtesy of MAZDA MOTORS CORP.