FW: Q Knock Sensors

pete peter@coorong.anu.edu.au
Thu, 31 Jan 2002 17:42:23 -0600


What would the ECU do if the sensor were to be unpluggged and the
socket to it connected across a 1 meg ohm resistor? Will it just
"hear" no noise or panic because there is none? Will it go into a
failure mode? Oh, this pertains to early 92 ECU's.

Pete

At 5:18 PM -0600 31/1/02, mike kojima wrote:
>The Knock sensor filter in an SE-R ECU is a simple
>analog filtering device.  It does not have any
>processing per se, it just triggers retard and rich
>based upon it seeing a signal from the sensor over
>time.
>The knock sensor is not active over 4500 rpm either.
>Mike

--
Pete
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