| Author | Topic |
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Location:
Brisbane
Registered:
February 2003
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Re: megasquirt wiring question
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Thu, 01 September 2005 10:11
 
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megasquirt requires a variable resistance TPS, not switched TPS.
easiest way to work out how to wire up the TPS...
Mount the TPS on the throttle but disconnect the wiring from the relay board, and use a digital multi-meter and switch it to measure resistance.
The resistance between two of the connections will stay the same when the throttle is moved.
Find those two - one will be the +5 Vref and the other a ground.
The third is the sense wire to MegaSquirt.
To figure out which wire is the +5 Vref and which is the ground, connect your meter to one of those two connections and the other to the TPS sense connection.
If you read a high resistance which gets lower as you open the throttle, then disconnected wire is the one which goes to ground, the other one which had the continuous resistance goes to the +5 Vref from the MegaSquirt, and the remaining wire is the TPS sense wire.
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| | Subject | Poster | Date |
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megasquirt wiring question
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people100 | Wed, 31 August 2005 12:43 |
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Re: megasquirt wiring question
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oldcorollas | Wed, 31 August 2005 13:31 |
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Re: megasquirt wiring question
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berad | Thu, 01 September 2005 06:16 |
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Re: megasquirt wiring question
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Jonny2TG | Thu, 01 September 2005 07:31 |
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Re: megasquirt wiring question
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thechuckster | Thu, 01 September 2005 10:11 |
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Re: megasquirt wiring question
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berad | Thu, 01 September 2005 10:48 |
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Re: megasquirt wiring question
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thechuckster | Thu, 01 September 2005 11:18 |
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Re: megasquirt wiring question
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corbet01 | Fri, 02 September 2005 00:49 |
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Re: megasquirt wiring question
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RA40Celica | Fri, 02 September 2005 03:22 |
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Re: megasquirt wiring question
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people100 | Sat, 03 September 2005 03:21 |
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Re: megasquirt wiring question
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thechuckster | Sat, 03 September 2005 03:56 |
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Re: megasquirt wiring question
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people100 | Sun, 04 September 2005 10:27 |
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Re: megasquirt wiring question
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thechuckster | Sun, 04 September 2005 11:21 |
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Re: megasquirt wiring question
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oldcorollas | Mon, 05 September 2005 01:15 |
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Re: megasquirt wiring question
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berad | Fri, 02 September 2005 04:40 |
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Re: megasquirt wiring question
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RA40Celica | Mon, 05 September 2005 03:30 |
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Re: megasquirt wiring question
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people100 | Mon, 05 September 2005 11:53 |
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Re: megasquirt wiring question
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RA40Celica | Mon, 05 September 2005 12:17 |
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Re: megasquirt wiring question
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thechuckster | Mon, 05 September 2005 12:21 |
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Re: megasquirt wiring question
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oldcorollas | Mon, 05 September 2005 13:13 |
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Re: megasquirt wiring question
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510rob | Tue, 06 September 2005 07:22 |
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Re: megasquirt wiring question
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HyDrA | Tue, 06 September 2005 09:05 |
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Re: megasquirt wiring question
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people100 | Tue, 06 September 2005 10:46 |
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Re: megasquirt wiring question
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thechuckster | Tue, 06 September 2005 13:24 |
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Re: megasquirt wiring question
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people100 | Wed, 07 September 2005 10:27 |
