FixVault
Home
›
Mazda
›
2022
›
MX-5 Miata Club
›
Repair and Diagnosis
›
Engine Performance
›
Engine Control Systems
›
Pcm Inspection
›
Inspection Using An Oscilloscope (Reference)
›
HO2S Heater Control Signal
HO2S Heater Control Signal
Courtesy of MAZDA MOTORS CORP.
PCM terminals
2BJ (+)-body ground (-)
Oscilloscope setting
5 V/DIV (Y), 50 ms/DIV (X), DC range
Vehicle condition
Idle (immediately after starting engine)