[Subaru E-Throttle TPS Wiring]

2 PINS = TPS MAIN and SENSOR GND = P3 and P4 ?????? = 3000 ohms

2 PINS = TPS SUB and SENSOR GND = P5 and P6 ?????? = 173 ohms

Those do not change when opening the throttle.

I've tried every permutation of ohm-ing the pins, with the exception of paralleling pairs of pins. Not sure if you're asking me to do that?

Does anybody have an e-throttle that behaves differently than what I'm seeing?

Thanks,

Ron

[Subaru E-Throttle TPS Wiring]

Dave - the wire colors are as follows:

P1 = Green

P2 = Yellow/Green

P3 = Blue/White

P4 = Light Green/Black

P5 = Pink

P6 = Light Green

I was at my Granddaughters place tonight and remembered that her Subaru has DBW. So I borrowed an Ohmmeter and did some checking. The pinouts all showed the same readings as my throttle. Furthermore, opening her throttle resulted in the same thing... no change in values. This leads me to believe there is nothing wrong with my throttle. The flaw appears to be in my understanding of how it's supposed to work.

[Subaru E-Throttle TPS Wiring]

I wired in a AAA battery to P3 and P5. Battery voltage was @ 1.61v. I then checked the voltage at P6 and P4. They were both around 1.56v. Seams plausible. But again, when I open the throttle plate there is no change in those voltage readings.

[Subaru E-Throttle TPS Wiring]

Sorry Dave, I don't have the factory ECU. I bought the throttle from a reputable auto recyclers.

Thanks for helping out with this,

Ron

[Subaru E-Throttle TPS Wiring]

Thanks Dave,

Pin 1 is Motor +VE and Pin 2 is Motor -VE. I've bumped those pins with 12v and the throttle plate opens.

The Ohm testing went as follows.

P3 & P4 = 3000

P3 & P5 = 3000

P3 & P6 = 3000

P4 & P5 = 173

P4 & P6 = 343

P5 & P6 = 173

My assumption is that P5 is 5v REF, P3 is sensor ground, P6 is Main, and P4 is Sub. The ohm readings seem plausible for that scheme. My problem is when I open the throttle plate all the ohm reading remain constant. Nothing changes. I've opened the plate by hand and also with power. No difference. I feel like the answer is staring me right in the face and I'm missing it.

[Subaru E-Throttle TPS Wiring]

I'm posting here because I don't seem to have privileges yet for the main forum. I have recently purchased an i88 and intend to use the E-Throttle feature with a 2006 Subaru legacy throttle body. Out of the 6 pins, I have determined the motor + and - terminals, but I'm struggling a bit to come to terms with the remaining 4 pins. I've tested plenty of standard TPS's so I thought I knew what to expect, with the exception of there being two TPS 'channels'. But, no matter which way I Ohm the pins I get static, unchanging Ohm values.

My question is, is there a proper method of testing the TPS's to determine the proper wiring?

Thanks,

Ron