Knock count reading, but not connected

Nistune topics specific to the 6802 cpu

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brett_32i
 

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Knock count reading, but not connected

Post by brett_32i »

hi,
another ghost reading!

my ecu doesn't have a knock board as it isn't turbo (but it thinks it is)
i am getting erroneous readings for knock count.
can i disable it in nistune?
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Matt
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Re: Knock count reading, but not connected

Post by Matt »

You have a VL turbo ROM image loaded into the Nistune board (for an RB30ET/E+T application)

There is no way to disable the input because Nistune does not know if the board is installed in a proper VLT ECU (with knock board) or not. Would just suggest ignoring the knock count from the ECU
brett_32i
 

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Location: mornington peninsula victoria

Re: Knock count reading, but not connected

Post by brett_32i »

so i just ignore it?
or set the ecu to ignore it?
Matt
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Re: Knock count reading, but not connected

Post by Matt »

Would suggest just ignore it. The ECU responds to a knock count query from Nistune. I could offer an option not to gather the knock count perhaps
bachig24u
 

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Re: Knock count reading, but not connected

Post by bachig24u »

wish it was as simple as grounding a pin on the knock board connector.
Matt
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Re: Knock count reading, but not connected

Post by Matt »

It probably might be. I would have to work out what each pin does again. One is used for resistance measuring (DTC knock fault code) and another passes the pulse through
brett_32i
 

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Location: mornington peninsula victoria

Re: Knock count reading, but not connected

Post by brett_32i »

ok, so although the ecu is reading something, nothing is actually being done with the input. ill just ignore it then.
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Re: Knock count reading, but not connected

Post by Matt »

Thats correct with these older ECUs knock count does not pull timing due to the fault code
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