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Alec

TPS tuning

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Hi. I am about to install a new TPS and need to tune it. What exactly should I be doing? The car is a fd3s rx7. I know the volt settings for closed and open throttle. Is there something else i should do with the computer through the laptop? 

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You dont need any voltage levels, you need to connect your laptop to the ECU, go to Options>TPS Setup, then follow the instruction on screen.  Basically, it is just press pedal to floor, click ok, lift off, click ok.  Do a store before turning off (ctrl+s).

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Great thanks for that. I have a fault AN V1 - TPS (MAIN) Input at 0V/Gnd. I replaced TPS sensor and hasn't made a difference. I'm at the point of thinking I need to rewire it. Does the code point to a specific wire to replace or do them all. I've traced them all back to computer. Full, narrow and 5v into the same plug and ground goes into big plug. Your help is much appreciated. Am I on right track? 

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The fault would indicate either the signal wire is shorted to ground or the 5V wire is broken.  The first step would be to check there is 5V at the TP sensor.

34 minutes ago, Alec said:

Full, narrow and 5v into the same plug and ground goes into big plug.

AN Volt 1 is pin 35 (link numbering) or 3G (mazda numbering), it should be a black and green wire.  You can check there is voltage on this pin at the ecu and you can also check it has continuity back to the TPS plug.

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Ok checked that and DMM didn't go off at TPS end  (69) and got absolutely nothing at computer end. Doing it myself so not sure if I got a connection at computer end but definitely did at TPS end. So replace this wire then? 

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44 minutes ago, Alec said:

Ok checked that and DMM didn't go off at TPS end  (69) and got absolutely nothing at computer end. Doing it myself so not sure if I got a connection at computer end but definitely did at TPS end. So replace this wire then? 

Sorry I dont understand what you are reporting here, can you try to explain it a bit more.

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I put digital volt metre on green and red wire with volt metre set on continuity and it should have beeped if correct but it didn't and i got a reading of 69 on meter. I got no reading at computer end. I've replaced wire but no results. Brown white wire from TPS I thought was 5v and I replaced that but now have the same error plus a new error AN V3 - MAP Sensor input at 0v/Gnd 

So obviously I've got the wrong Brown white wire as map has one to. I'll correct that now. 

That's now corrected. About to replace TPS Brown white wire. 

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