Zirconia O2 sensor alternate modes of operation

[TBK]

I think it is .456V supplied through 1Mohm. When the sensor heats, it's
resistance drops and can now overcome the bias voltage. The .456V is just
there to fool the ECM until the sensor is warm.

Right or wrong Peter?

TK
-----Original Message-----
From: Zack <zubenubi at inetport.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Cc: nacelp at bright.net <nacelp at bright.net>
Date: Saturday, February 21, 1998 10:57 PM
Subject: Re: Zirconia O2 sensor alternate modes of operation


>Bruce,
>
>So you're saying the GM units bias the sensor and read the resulting
>current?
>Interesting, I didn't know there were any production cars that used that
>method.
>
>Zack
>
>----------
>> From: bruce plecan <nacelp at bright.net>
>> To: diy_efi at efi332.eng.ohio-state.edu
>> Subject: Re: Zirconia O2 sensor alternate modes of operation
>> Date: Sunday, February 22, 1998 1:11 AM
>>
>> In the GM applications I've worked on, all had a .44v applied to
>> the O2 sensor, didn't matter if they were heated or not.
>> Bruce
>