FixVault
Home
›
Mazda
›
2012
›
CX-7 i Touring, 2.5L Eng VIN 5
›
Repair and Diagnosis
›
Engine Performance
›
Engine Control Systems
›
Engine Control System [2.5L L5]
›
Pcm Inspection
›
Inspection Using An Oscilloscope (Reference)
›
HO2S heater control
HO2S heater control
Fig 1: HO2S Heater Control Graph
PCM terminals
2B(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 1 s/DIV (X), DC range
Vehicle condition
Idle (immediately after starting the engine)