Prius throttle pinout

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Joined: 08/20/2012
Points: 47

I am converting a Honda Insight to electric power. I'm using an HPEV ac-50 motor with a Curtis 1238R controller. The controller has a three wire connection for a hall effect type throttle. The three connections are +5vdc, ground, and signal. The Prius throttle assembly has a 6 pin connecter. Does anyone know which throttle assy. pins I need to connect to the controller?

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Joined: 07/07/2007
Points: 1686
Re: Prius throttle pinout

the prius throttle assembly actually has two independant hall sensors

IIRC, one is just the standard 0-5v and the other is 2.5v - 0v

you just need to isolate the 3 pins for the 0 - 5V

the colour codes for the 0 - 5 v are red, black and white usually, (I can't remember what colours the 2.5v - 0v are)


Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
Spent so far: $5800 + $7000 + $2040 + $1200 + $425 + $800 + $140 + $3000
Cost to do it again: $1000 + $3800 + $2040 + $1200 + $425 + $800 + $140 + $1500 (lasts longer)
Cost for a Petrol bike:$6000 + + $1440 + $7560 + $1000 + $1600 + $4000 servicing
Total spent: $20405
Total to do again: $10905
Total to have used a petrol bike: $21600
Total distance travelled so far: 102'120km

Other vehicles:
2008 Mazda 2 conversion
2009 Blade Electron
1997 Prius - plugin hybrid mod

Joined: 08/20/2012
Points: 47
Re: Prius throttle pinout

Thanks for the info. I was able to connect the prius throttle to my hpev ac-50/Curtis motor-controller combo. It drives nicely. I hope to have the Honda Insight conversion on the road within the month. My goal is to drive it to the EVCCON rally in Missouri this August. That will be about 460 miles each way. I plan to charge it at camp grounds along the way.
You may not remember, but you sent me a couple of programs to download to my 2007 Vectrix vx1, that I converted to 60ah lithiums much like yours. It's been over a year ago. I've been riding that bike daily ever since. I did have a charger failure, so I crammed a TC charger in, much like you did. I love that bike. Since I put the Lithiums in, I've ridden it 11000 miles. I have a buell blast for a backup that I haven't started since last July. Thanks for your response.

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