A/F sensor heater control signal

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of MAZDA MOTORS CORP.

PCM terminals

1CB (+)-body ground (-)

Oscilloscope setting

5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition

Idle after warm up