Electric Steering with Fail-Safe: No eBay module needed. Pics & Videos ! - Page 7 - Vintage Mustang Forums
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post #91 of 311 (permalink) Old 01-22-2017, 02:55 PM
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Built a mock up board to look at tit/telescopic variables. Looking opinions:
A) should I set the lowest tilt position at the OEM position? (so all the tilt is to push the column is/out of the way)
B) make the OEM position be in the center so it has some tit up and down from OEM?
C) don't bother because there will only be about 4" movement out at the OEM steering wheel due to where the pivot point is?
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post #92 of 311 (permalink) Old 01-23-2017, 06:41 PM Thread Starter
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Quote:
Originally Posted by 1965_fastback View Post
Here is a picture with the connectors plugged in.

Thanks
Paul
Your ECU for the newer Versa's EPS looks almost identical to my 2010 Nissan Cube. On the Cube, the Ignition On +12V Wire is the Pink One.

Waid
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Last edited by Waid302; 01-23-2017 at 06:45 PM.
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post #93 of 311 (permalink) Old 01-26-2017, 12:45 PM
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Love the information here so I Googled the Prius EPS to see what I could find online. When I did, I found this thread about an issue this person was having with calibration. In fail-safe mode, is this an issue?

Power Steering Problem - Toyota Prius Forum : Prius Online Toyota Forums

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post #94 of 311 (permalink) Old 01-28-2017, 05:01 PM Thread Starter
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Originally Posted by Msurebel View Post
Love the information here so I Googled the Prius EPS to see what I could find online. When I did, I found this thread about an issue this person was having with calibration. In fail-safe mode, is this an issue?

Power Steering Problem - Toyota Prius Forum : Prius Online Toyota Forums
That is a good question and honestly I don't know. I know several people who are driving the Prius EPS in Fail Safe Mode (No Prius engine computer or eBay box) with no issue. I assume it behaves differently in fail safe mode.

Waid
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post #95 of 311 (permalink) Old 02-05-2017, 09:56 AM
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Waid,

How did you attach the upper Falcon tube to the Prius unit? I saw the post with the exhaust adapter but did not see exactly how you made the attachment rigid - meaning, how did you affix the tube to the Prius unit? I can't see where you could attach a bolt or screw.

Thanks
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post #96 of 311 (permalink) Old 02-06-2017, 11:55 AM Thread Starter
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Quote:
Originally Posted by Msurebel View Post
Love the information here so I Googled the Prius EPS to see what I could find online. When I did, I found this thread about an issue this person was having with calibration. In fail-safe mode, is this an issue?

Power Steering Problem - Toyota Prius Forum : Prius Online Toyota Forums
Over the weekend I left the battery connected to the Prius ECU for over 6 hours - bench test. The EPS still continued to work so it did not time out or anything.

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post #97 of 311 (permalink) Old 02-06-2017, 12:00 PM Thread Starter
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Originally Posted by Tenthumbs View Post
Waid,

How did you attach the upper Falcon tube to the Prius unit? I saw the post with the exhaust adapter but did not see exactly how you made the attachment rigid - meaning, how did you affix the tube to the Prius unit? I can't see where you could attach a bolt or screw.

Thanks
Since I have a small lathe, I made a aluminum ring adapter which slips over Prius upper tubing. The Falcon's steering column tubing slips over the aluminum ring and is held in by a tapped screw. If you don't have a access to a lathe, use a exhaust tubing reducer may work.

Waid
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post #98 of 311 (permalink) Old 02-07-2017, 10:01 AM Thread Starter
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Check this out. This guy has been running Toyota EPS for over 1 year with no issues! He is using 08 Scion XD which is similar to the one used in Prius:

Toyota Electric Power Steering Conversion |
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post #99 of 311 (permalink) Old 02-12-2017, 11:31 AM Thread Starter
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One more EPS / ECU that works in fail-safe/limp home mode.

2008-2011 Scion XD It's almost identical to Prius but just tad bit smaller than Prius.


ECU Part Numbers:

2004-2009 Toyota Prius 89650-47102
2009-2013 Toyota Corolla 89650-02300
2006-2011 Toyota Yaris - (With ABS) 89650-52120 / 52050
2006-2011 Toyota Yaris - (Non-ABS) 89650-52070 & 520140
2007-2009 Nissan Versa 28500-EM30A / 991-30303
2009-2012 Nissan Cube 28500-1FC0B / JL501-000932
2012-2014 Kia Soul B2563-99500 / 4PSG1312 / FPSG1312
2008-2011 Scion XD 89650-52A10
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post #100 of 311 (permalink) Old 02-16-2017, 10:05 AM
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Quote:
Originally Posted by waid302 View Post
One more EPS / ECU that works in fail-safe/limp home mode.

2008-2011 Scion XD It's almost identical to Prius but just tad bit smaller than Prius.


ECU Part Numbers:

2004-2009 Toyota Prius 89650-47102
2009-2013 Toyota Corolla 89650-02300
2006-2011 Toyota Yaris - (With ABS) 89650-52120 / 52050
2006-2011 Toyota Yaris - (Non-ABS) 89650-52070 & 520140
2007-2009 Nissan Versa 28500-EM30A / 991-30303
2009-2012 Nissan Cube 28500-1FC0B / JL501-000932
2012-2014 Kia Soul B2563-99500 / 4PSG1312 / FPSG1312
2008-2011 Scion XD 89650-52A10
Love this list, and thread. I'm curious which units would you suggest for a manual rack & pinion? I remember you saying the bigger ones are better because the R&P takes more force. It seems like ebay and yards are catching on and the prices onthe prius units seem to be going up. At least in my area.
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post #101 of 311 (permalink) Old 02-16-2017, 10:26 AM
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It would be informative if some output torque figures could be had to the different units.
We know that the Vue has the oomph for the Mustang conversion but I was wondering if the smaller vehicle units are up to the task.

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post #102 of 311 (permalink) Old 02-16-2017, 05:10 PM
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I posted in the other thread, but I should probably post here since it is more relevant to the Toyota discussion. I started collecting some parts for my Prius EPS swap into my 1967 Cougar. Not much to show for now, but I got a steel collar from McMaster Carr. It will be used as a basis for attaching the upper Cougar column to the EPS unit.






If anyone is interested in the full build thread, it can be found here:

1967 Cougar build (over 700 pictures and videos))

**Trigger warning: If you are sensitive to non-Ford engines in Ford vehicles, proceed with caution**

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post #103 of 311 (permalink) Old 02-16-2017, 06:01 PM
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Someone earlier asked about the connectors and terminals that go to the ECU. First of all, I would never ever use a standard spade connector. The female terminals that are used in these connectors are massive. They are bigger than Metripack 800 (same blade size as mega fuses) series which are rated at 60 amps.

I disassembled a power input connector on my Prius ECU. The wire is definitely bigger than 10 gauge. I am sure it's the metric equivalent of the next size up. Here are some pictures of the terminals:





I am pretty sure that these connectors and terminals are made by Yazaki. The blade size seems to be 9.5mm wide. I bet these are rated at 70-80 amps.

Here is the Yazaki catalog: YAZAKI Connectors Catalog

Unfortunately, I wasn't able to find anything that matched exactly. It's entirely possible that these are custom made for Toyota specs and may not be available individually. Also, Yazaki connectors and terminals are not super easy to find locally (USA).

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post #104 of 311 (permalink) Old 02-16-2017, 07:07 PM
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Founds more info on the connectors and the terminals. Honestly, sourcing the connectors from the junk yard would be a lot cheaper, but I do like installing wires without having to but splice. Makes for a nice tidy installation. So the Prius P7 (main power input) connector (body) is Yazaki 7283-3521-40. The terminals (metal contacts) are 7116-3098-02.

Andrew
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post #105 of 311 (permalink) Old 02-16-2017, 09:06 PM
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I also want to mention that I observed a significant difference between the ECU wiring of a Prius and the other ECU that I have which is from a Scion xD (I suspect this car is based on the Yaris). The connector that provides main power to the ECU is interchangeable between the two ECUs, however they are definitely not the same. The Prius connector uses a different terminal which is much more robust than the Scion ECU. There is also a considerable difference in wire size. The Prius power wires measure about 5.5mm with the insulation, while the Scion wires are about 4.3mm. That seems like a considerable difference.

I suggest that everyone use quality wire and connectors when hooking up the ECU. I have been planning this swap for a while and I installed a power distribution module in my Cougar in anticipation for this swap.





These are made by Delphi and if anyone is interested I can post more information. I ran five 10 gauge leads into the car in anticipation of future wiring needs. Now I wish I would have run one 8 gauge lead just for the steering. Since I have extra leads, I may double up and use two 10 gauge leads. Most sources claim a max of 55 amps for 10 gauge wire and I bet they can draw more in dynamic situations.

Andrew
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