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Link rx tps wiring problems

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Old 10-06-12, 03:17 AM
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Link rx tps wiring problems

Hi guys got a link rx ecu for my series 7 rx7 having trouble wire tps up it has 4 wires green/black green/red brown/black brown/white in the manual it shows how to hook up a 3 wire tps so im bit stuck with the 4 th wire any help would be appreciated. Cheers
Old 10-06-12, 10:59 AM
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You can identify the leads with an ohmmeter.

Find the three wires that show a resistance to each other.

Connect the meter to any two. Move the TPS. If the value doesn't change, you've found the Vref and ground. Swap meter around until you find it.

Connect + meter lead to one of those wires you've identified above.

Connect - to the remaining 3rd wire. Move TPS.

If the value goes down, then the + wire is on the Vref and the - lead is on the signal. If the value goes up, the opposite is true.
Old 10-06-12, 12:57 PM
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Thanx for the help what is the purpose of the 4th wire? Cheers matt
Old 10-06-12, 01:20 PM
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Is this what you were after?
Attached Thumbnails Link rx tps wiring problems-attachment_002-tps-diagram-fd.png  
Old 10-06-12, 01:23 PM
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3 wire system: leave out the Green/Red.
Old 10-06-12, 02:39 PM
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Originally Posted by misterstyx69
3 wire system: leave out the Green/Red.
Mint that makes it easy thanx for help guys, also i need to know wat each wire is on gbox loom for speedo etc cheers matt
Old 10-07-12, 10:03 AM
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You do have a copy of the FSM, right?

Foxed.ca - Mazda RX-7 Manuals
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