Driving the NB tach from Toyota COPs?
Hi,
I'd like to drive the tach directly from the tach output pin on the Toyota COPs, has anyone done this before on an NB? My motivation is to free up an output on the ECU. I am assuming it needs a pullup circuit, although I am unsure as to how many of the COPs need to be connected to the circuit for it to generate the correct signal to suit the NB tach? Cheers |
bring it into the diag box.
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Can I just feed the signal directly into 2K on the factory loom?
I'm suspecting I have to wire two of the 4 up to get the correct signal for the NB tach? |
You need to connect all four wires together, then a 1K pullup to 12V and finally connect it to 2K as you said. I've tried it on a 03 and it works.
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? The NB ECU generates the signal for the tach.
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Originally Posted by Reverant
(Post 754416)
You need to connect all four wires together, then a 1K pullup to 12V and finally connect it to 2K as you said. I've tried it on a 03 and it works.
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In my case, I connected all four and it worked?
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Originally Posted by Reverant
(Post 754416)
You need to connect all four wires together, then a 1K pullup to 12V and finally connect it to 2K as you said. I've tried it on a 03 and it works.
Originally Posted by JasonC SBB
(Post 754564)
? The NB ECU generates the signal for the tach.
Originally Posted by Ben
(Post 754567)
Only 2 need to be connected if wasted spark, or all 4 if sequential.
I really wish I had a scope! Thanks guys |
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