AFR Wide Band O2 Sensor ECU Signal Circuit
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NOTE: This special Video-Course Sub-Series is designed to gain knowledge of the effects a circuit has on the rest of the ECU and how it reacts to such INPUT-Values.
The AFR Wide Band O2 Sensor ECU Signal is a wide band style O2 sensor, used as a feedback of Oxygen content in the exhaust. This is a broad air fuel mixture sensor, which means that it senses a wide range of air fuel mixture ratios.
Seen here in this diagram, to the center is the actual A F R sensor, signified by the coil heater, the transistor and F E T symbols. The F E T signifies the reference cell. The center heater is activated by power and ground, with the ground normally controlled by the E C M, not seen .....
Get the whole story right here in this video... Enjoy.
