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As I used this Forum only as a place to get technical info on the Yaris EPS, I have to confess ignorance on most things Ford - I have absolutely no idea what an "8.8" is.

I suggest you look at their website or give them a call: maybe there are other sources of similar parts but this was the source I used. Hall Effect Speed Sensors

The technique I used should work for any source that produces a square wave signal pulses - you just have to calculate the number of pulses you need to get the assistance at given speeds according to your final drive ratio. The EPS expects a 5V signal as far as I can determine, so watch for this too.

I run 165/80R15 tyres with a 4.3:1 final ratio, and a four-magnet ring gave me the pulses that gave me the progression I was looking for. It's a dream to drive on the Swiss Alpine passes 30 minutes from home.
 

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Did some research, tell me what you think. I went to the local pull and pay and grabbed a yaris power steering ecu. It has abs but after reading what dominic wrote it seems that it should work either way. In this diagram you can see that the epas module has a D31-5 and communication with the ABS module should only be so that the system can get the VSS info onto the CAN bus. Also in the diagram it states that the ABS EPAS module only requires pin 6 but the non ABS requires pin 5 and 6. So if we use the sensor and a collar that Dominic put together put the sensor signal to the D35-5 and 12v to D35-6 this should work. Anyone else think this will work? My car is in pieces so I can't test it.
 

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Just some guy
67 coupe, 69 Sportsroof, 86 hatchback
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Back to Explorer 8.8, if you have one under your car then it already has a speed sensor. A Hall effect style that outputs AC if I recall correctly. Somebody else would want to verify that though. In any case the Explorers got 108 tooth tone rings in them. A long way from the 4 that Dominic came up with but given the technical skills demonstrated in this thread so far I bet someone can work out something.
 

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What flashing LED are people using for the Yaris non-abs units? I picked up complete unit out is a 2007 Yaris I’m going to be using and just curious if there are certain specs for the LED I need to order.
 

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Just some guy
67 coupe, 69 Sportsroof, 86 hatchback
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So the explorer puts out 8000 pulses per mile has 8 magnets and the sensor is 12v with a 5v signal, ?
Lost me there. The older Ford 8.8's that people swap into vintage Mustangs use "passive" style variable reluctance sensors, there are no magnets involved that I'm aware of. I can say I misspoke popping off and generically calling them Hall Effect sensors as they aren't the actual three wire style and are actually two wires. When one says Hall Effect you generally mean the active three wire types. I apologize for any confusion.

One reason I've not been in this thread is because electric steering is not something I know about. These threads have been great to read and learn from though.
 

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I though I would share this here since I hadn't seen an answer on the connectors to a number of these control modules. One or two mentioned Yazaki parts but after a close look they were not the correct ones of at least not the ones for the control unit Jtekt uses on the Nissan variants. I have a 15' versa eps column the part numbers are as follows.

Large Connector
Blue (To Motor) - 7123-4129-90 Yazaki 58 Connectors L Type Housing 2P Female

Black (Power to module) - 7123-4123-30 Yazaki 58 Connectors L Type Housing 2P Female

Back plate/Holder - 7157-6421-80 Yazaki 58 Connectors L Type Others 2P Female

Terminal - 7116-3250 Yazaki 58 Connectors L Type/Y Type/L-MC Type Terminal Female


Small plug (for ignition signal and canbus)
Connector - 1379659-1 TE AMP conn plug HSG 8POS 2.20mm

Terminal - 1123343-1 TE AMP conn socket 20-24AWG Crimp

For the smaller connect the left and right side are different this should be the part to the connector on the car side harness the connector going to the torque sensor is a mirror part
 

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Thank you sir for your detailed post. Had just posted on GMT site for this very info when I found your post. Plan on a.prius swap into my 67 vert. With a long shaft box. In your opinion is it feasible to cut my shaft close to the box & use all of the prius shaft & joints from the unit to the box as my plan is a rack& pinion swap after this eps swap. If so will I need some kind of shaft support at the box for now asking because have not had a column off the box in more years than i care to count. Thanks for any imput.
 

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need help with these toyota prius eps. i need eps on my go cart because of the weight so i went to the junk yard and got an eps off an 07 prius. got the rack, whole steering column and shaft etc along with the ecu for the eps. hook it up with the 3 wire connection and nothing just heard the few clicks. decided to go junk yard again for more parts off and 07 and 05 and still no luck. i tried swapping the torque sensors, ecu and motor but still hearing the clicks and it doesnt turn easy and no sound from motor. am i doing somethng wrong? torque sensor and motor were hooked up then has power ground and ignition hook up.
 

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Maybe try being a little neater with your wiring. That looks like a mess. The input to the steering ECU is 10 gauge wire and you are feeding it with what are essentially usable links.

Andrew
 

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Maybe try being a little neater with your wiring. That looks like a mess. The input to the steering ECU is 10 gauge wire and you are feeding it with what are essentially usable links.

Andrew
theres better wiring on the other motor where i didnt cut the harness and connectors were in placed. the only bad is the smaller guage wires for power and ground were used and still same issue. you thinking adding the 10 guage wire will solve the issue? i think i was using 14 guage wire for power and ground and prob 14-18 for ignition. also idk if the battery is an issue as it had 7-10.2 volts in the process but with the jumper on it had 16-22 volts..
 

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ye except i didnt use a vise or pliers. i had it on the ground turning it with my hand and it had the same tension as if it didnt had power. i got a saturn vue eps also so if i cant get these toyota prius to work ill return to the junkyard for my money. it would be nice to get one to work though and not think that all 3 prius had eps issues in the junkyard..ill try with a fully charge battery and see if it works. im running out of ideas here lol i got 3 torque sensors, 3 ecu and 2 motors for the prius. i swap them all around and didnt see a change.ill send more pictures to give ideas when i try it again
 
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