Page 1 of 1

Bosch donat style knock sensor wiring

Posted: Thu Sep 15, 2022 2:28 pm
by Rashx100
Hello,
I am wiring two Bosch donat style knock sensors on my S7+. My engine is 2jzgte
I am using 2 core Tefzel shielded wire. On the S7plus manual i found
Knock> B4
Knock2>B5
Knock Grounds>C1
(spliced two knock sensors ground and connect here? am i right ?)
Then which pin i can use for shield drain ?

Another question is which pin i can use to connect my radiator fan ?

TIA

Re: Bosch donat style knock sensor wiring

Posted: Thu Sep 15, 2022 5:40 pm
by stevieturbo
Shield can go to sensor ground or the knock ground. Connect shield at one end only.

Fan control can go to any spare "FUEL" or "IGN" output ( or H Bridge output I guess too ). Obviously you cannot directly wire to a fan, it must be via a suitable relay.

The instruction/manual will cover all this already.

http://www.syvecs.com/downloads/Syvecs_Manual_V1.1.pdf

Re: Bosch donat style knock sensor wiring

Posted: Thu Sep 29, 2022 6:29 pm
by Rashx100
Thanks for the reply.
Any idea what will be 2jzgte band pass filter frequency ?

TIA

Re: Bosch donat style knock sensor wiring

Posted: Thu Sep 29, 2022 6:31 pm
by stevieturbo
a starting point can be calculated from bore diameter.

https://phormula.com/knock-frequency-calculator/

Re: Bosch donat style knock sensor wiring

Posted: Tue Feb 27, 2024 6:33 am
by Mumphi
stevieturbo wrote: Thu Sep 29, 2022 6:31 pm a starting point can be calculated from bore diameter.
Fun Games
https://phormula.com/knock-frequency-calculator/
That's the calculation I'm looking for.