[Diy_efi] O2 Sensor or Computer

steve ravet sravet at arm.com
Wed Aug 21 16:20:44 GMT 2002



Peter Foote wrote:

> Can the computer back drive the O2 sensor? Anyone have any partial

I've heard (for GMs) that the computer puts .5v through a large resistor
onto the O2 sensor line.  When the O2 sensor wakes up it overdrives this
voltage.

> schematics of the O2 input section for that computer? I probably have to buy
> parts either way and would like to replace the right one.

Schematics for lots of ECMs are at Ludis' page:  www.cruzers.com/~ludis

--steve


-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com

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