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Thread: Dominator TPS signal for TCI controller.

  1. #1

    Default Dominator TPS signal for TCI controller.

    Hello. Where do I pull the TPS signal for the TCI transmission controller if I'm using the DBW harness? Thank you for your help.

  2. #2


    I just talked to tech, I was told I needed a Casper Electronics TPS break-out. This won't work because I'm using a Drive-By-Wire harness and silver blade throttle body. There's no separate TPS sensor. Anyone?

  3. #3


    @Carbuilder: If you have a Dominator, what do you need the TCI transmission controller for? Andrew

  4. #4


    It's a TCI 6 speed transmission. I read the Dominator wouldn't control it.

  5. #5
    Join Date
    Dec 2009


    HP & Dominator EFI users don't seem to experience problems with splitting the TPS signal wire to two devices. You shouldn't need the 5V reference (or ground) from two devices. You're only splitting the TPS signal wire.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  6. #6


    Yup, that's what I've read. The problem is I'm not using the remote TPS plug in the harness. I'm using the Drive-By-Wire harness for the LS3. So my question is if I'm not using the remote TPS plug, where do I pull the TPS signal from? I looked at the pin-out for the DBW harness and it shows two TPS signal wires. I wouldn't think I can pull the TPS signal from the unused remote TPS connector, can I?

  7. #7


    You'd have to check which one of those sends the signal that you're looking for, and tap off that pin and, pray it doesn’t cause any voltage drop that would send the ECU into limp mode.

  8. #8


    The Holley DBW harness' TPS signal wire is just split to the throttle body. I've tapped into this wire for use in my PCS transmission controller and haven't had a problem. The downside is the IAC with the DBW is the throttle body so when the Dominator opens the TB blade the TPS value changes. I've thought about tapping into the throttle pedal 0-5V signal wire instead, but I haven't really felt the need to yet. -Greg

  9. #9


    Ooooh, so same values at both wires?

  10. #10


    To avoid the IAC issue, you should probably tap into the pedal signal. In the ECU there's a channel called Pedal Position, which from a logic standpoint makes the most sense to send to the transmission.

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