O2 sensor signal voltage range?
5th Gear
Joined: Jan 2015
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confused
SWEET!! good man...
ok, your GEMS ECM supplies the sensing circuit with a 5v reference signal value. The return signal to the ECM can vary from 4.99v and down to .1... that return signal is what drives the ECM to alter the air:fuel via the ground signal to the injectors. MAF could throw off that ratio too if it's dirty or faulty...
The heater element circuit is 12v Pulse width modulated voltage.
ok, your GEMS ECM supplies the sensing circuit with a 5v reference signal value. The return signal to the ECM can vary from 4.99v and down to .1... that return signal is what drives the ECM to alter the air:fuel via the ground signal to the injectors. MAF could throw off that ratio too if it's dirty or faulty...
The heater element circuit is 12v Pulse width modulated voltage.
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