A/F Sensor Heater Control Signal

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: A/F Sensor Heater Control Wave Pattern Signal

Courtesy of MAZDA MOTORS CORP.

PCM terminals

1CB (+)-bodyground (-)

Oscilloscope setting

5 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition

Idle after warm up