Mazda 6 Facelift 2005 Training Manual page 85

Engine
•
The HO2S supplies the PCM with a current between -1.8...+1.8 mA.
Excess-air factor λ
X
•
Since the HO2S only generates a usable signal above a certain temperature, it features
an integral heater element. The temperature of the HO2S is controlled by the PCM,
which activates the heater element via a duty signal.
1 From PCM control relay
2 Heater element
Service Training Mazda6 Facelift
Y Current
3 PCM
Diesel Engines
M6FL_01086
M6FL_01085
01-71