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Tacho Output

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Tacho Output

Posted by daniel calderwood at May 15. 2008
Hi Ive got a link plus G1 running an SR20DET. the tacho output was working fine in the 1st car i had it in. I have since moved it to a new car and the tacho just wont read. I put a voltmeter on the output wire and its just putting out a constant 12v. Same engine and loom, different car. Any ideas ?

Re: Tacho Output

Posted by Simon (Link Staff) at May 16. 2008

This is likely to be the Tacho wanting a coil negative signal. The ECU only does a pulsed 0-12V signal.

Some Tachos can be modified across.



Re: Tacho Output

Posted by daniel calderwood at May 16. 2008
I mean i put a meter on the wire out of the link and its reading constant voltage. its not changing with revs like it should do. This is without being connected to the gauge cluster at all. the reading on my hand controller shows fine

Re: Tacho Output

Posted by Simon (Link Staff) at May 20. 2008

Really need a scope to check the output. To see if it is switching at all. We can bench test if required.



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