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TPS Wires

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Old 04-23-2007, 02:42 PM
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Default TPS Wires

Well I redid all my wiring and I am stuck at the last 2 wires. According to the megamanual 22 is the TPS signal and 26 is the 5vref from the tps. I am in a 94 and I do not know which of the 4 wires coming from the TPS is which.

http://www.madracki.com/miata/images/wiring/94sys.pdf

That is the link for the wiring diagram for the 94. Page 8 and 9 have the wiring for the stock harness. Can any one please figure out which wires coming from thew TPS I am supposed to use.
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Old 04-23-2007, 02:58 PM
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if i read correctly:

RED / BLK - Wiper (TPS)
BLK / BLU - Ground
RED - Switch Idle
LTGRN / WHT - 5vref
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Old 04-23-2007, 03:13 PM
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I think Scott is right, but you can double check that with a multimeter on the blk/blu and ltgrn/wht wires. You should see voltage changing when you open the throttle.
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Old 04-23-2007, 03:42 PM
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Originally Posted by shuiend
26 is the 5vref from the tps.
If its pin 26 from the Megasquirt its not 5vref from the tps, its 5v REFERNCE FOR the tps.
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Old 04-23-2007, 03:51 PM
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Originally Posted by ecugrad
If its pin 26 from the Megasquirt its not 5vref from the tps, its 5v REFERNCE FOR the tps.
I didn't use the V/ref at all, I just 'tapped' the signal line. works perfect.

when I cut the signal and 5vref line I got ECU resets every time I let off the throttle.
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Old 04-23-2007, 04:01 PM
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maybe the wot switch ***** stuff up?
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Old 04-23-2007, 04:23 PM
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I also just tapped my lines for the TPS.
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