$35 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!! - LS1TECH - Camaro and Firebird Forum Discussion



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$35 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!

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Old 10-16-2016, 10:35 AM   #1
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Default $35 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!

It has been a while since I posted on this forum. I am not making or selling anything. I have posted this on couple of other forums and this is not for everyone.

Some of you have manual steering and I though you might like to see how added electric assisted power steering in my 1964 Falcon. Some of you may have come across the Saturn Vue conversions but I think I have found even cheaper and better alternative with no caster issues!

My testing shows that most Japanese branded cars and SUV with electric steering works in Fail-Safe mode if the control unit (ECU) is disconnected from CAN BUS. The effort in Fail-Safe mode feels just right like my 2013 Honda Civic. Not too much and not too little. Just like Hydraulic Steering, if the Electric Assisted Steering completely fails, the steering is back to completely manual mode maintaining car control.

The biggest advantage of using EPS from Toyota, Nissan and Kia/Hyundai is that the EPS works in Fail-Safe. The ECU for the column is mounted remotely and cab be disconnected and removed. The EPS from Saturn Vue and Chevy Cobalt has the ECU that cannot be disconnected and must be de-soldered for remote mount. More importantly there is no Fail-Safe and a 3rd party eBay module is needed in order for it to work. Additionally , people have reported that with after market eBay module, the Saturn EPS does not self center the steering wheel coming out of a turn. You have to make constant corrections.

Below is the list of Car that I know of that has Fail-Safe Electric Steering. Only 3 wire connection. Ignition On, Power and Ground to the Steering ECU. That's it !

2004-2009 Toyota Prius
2009-2013 Toyota Corolla
2006-2011 Toyota Yaris - (With ABS)
2007-2009 Nissan Versa
2009-2012 Nissan Cube
2012-2014 Kia Soul

ECU Part Numbers:

2004-2009 Toyota Prius 89650-47102
2009-2013 Toyota Corolla 89650-02300
2006-2011 Toyota Yaris - (With ABS) 89650-52120 / 52050
2007-2009 Nissan Versa 28500-EM30A / 991-30303
2009-2012 Nissan Cube 28500-1FC0B / JL501-000932
2012-2014 Kia Soul B2563-99500 / 4PSG1312 / FPSG1312

The output shaft on Toyota is little larger than the rest and therefore the Borgeson 312500, 11/16 36 X 3/4 smooth bore weldable coupling should fits nicely. This couple fits the others as well. The Kia EPS is the biggest and appears to be most heavy duty. The Prius & Corolla EPS are very easy to find at salvage yards so this is the best bet. I picked up these EPS for testing for $35 each at my local pic-a-part

Note: As with any modification, there are risks. This post is intended to show how I did my modification. Use it at your own risk!

Waid

Last edited by waid786; 10-21-2016 at 04:50 PM.
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Old 10-16-2016, 10:37 AM   #2
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General Information
Attached Thumbnails
 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-1-corolla-prius.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2-prius-yaris.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-3-prius-yaris.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-4-cube-versa.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-5-cube-versa.jpg  

 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-6-kia-soul.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-7-ecu.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-saturn-vue-2.jpg  
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Old 10-16-2016, 10:38 AM   #3
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Wiring Diagrams. Only 3 wires are needed. Power, Ground and Ignition On
Attached Thumbnails
 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2007-yaris.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2008-versa.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2009-toyota-prius.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2010-nissan-cube.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2014-kia-soul.jpg  


Last edited by waid786; 10-20-2016 at 08:35 PM.
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Old 10-16-2016, 10:39 AM   #4
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How I did the upper steering column and steering shaft.
Attached Thumbnails
 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-1-upper-steering-shaft.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2-upper-steering-shaft.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-3-upper-steering-column.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-4-upper-steering-column.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-5-upper-steering-column.jpg  

 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-6-upper-steering-column.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-7-back-bracket.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-8-prius-mounted.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-9-versa-mounted.jpg  
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Old 10-16-2016, 10:41 AM   #5
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I first did the mod with steering box and then later switched to Rack and Pinion.
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 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-6-steeringbox.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-9-final-assembly.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-f49359517.jpg  
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Old 10-16-2016, 10:42 AM   #6
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This is how did my Rack and Pinion swap.
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 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-1-lower-shaft.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-2-lower-shaft.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-3-lower-shaft.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-4-complete.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-5-lower-bearing-support.jpg  

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Old 10-16-2016, 10:43 AM   #7
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For early cars with collapsible steering columns
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 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-collapsible-2.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-collapsible-3.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-collapsible-4.jpg  
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Old 10-16-2016, 10:45 AM   #8
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In order to use the Electric Steering with power steering box, the steering box has to be converted to manual by tack welding the input shaft to worm shaft. This is how I welded my input shaft to the pinion shaft in my rack and pinion. I removed the valve sleeve.
Attached Thumbnails
 Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-8-rack.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-9-rack.jpg    Electric Power Steering with Fail-Safe - No eBay module and no caster issues!!!-11-rack.jpg  
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Old 10-16-2016, 04:29 PM   #9
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YouTube Videos:

DIY Electric Power Steering 1 - EPS with Fail Safe

DIY Electric Power Steering 2 - Bench Test

DIY Electric Power Steering 3 - Mounting Options

DIY Electric Power Steering 4 - In Car Test
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Old 10-19-2016, 09:13 PM   #10
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**** that's awesome
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Old 10-19-2016, 10:12 PM   #11
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Pretty cool.
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Old 10-20-2016, 12:37 PM   #12
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If you already have a manual rack, this is the an awesome mod to give your car a power steering with little $$$. There are tons of Prius & Corollas in salvage yards!

If the EPS ever fails, you will always have steering just like when your hydraulic power steering pump fails.

Wahid
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Old 10-20-2016, 04:13 PM   #13
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Now this is interesting.
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Old 10-20-2016, 05:55 PM   #14
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That's awesome
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Old 10-24-2016, 11:59 AM   #15
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Extremely fascinating!
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Old 12-08-2016, 07:16 PM   #16
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I want to do this to my Turbo LS swapped 260z ! Are you in Cali ?
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Old 12-11-2016, 08:12 PM   #17
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Quote:
Originally Posted by Daz View Post
I want to do this to my Turbo LS swapped 260z ! Are you in Cali ?
No I am in mid-west. I wish I was in Socal!

You guys are lucky to have so many LQK out there so the EPS is easy to find! Recently, I was on business in Socal and visited several LKQ to get Toyota Yaris ECU. The non-ABS Yaris will give variable power assisted based on pulses from speed sensor and works with Prius EPS. I went home with several non-ABS ECU's. I also stopped by LKQ in your home town of Victorville but they did not have any at the time. The Yaris EPS is very small and I would not use it on bigger car.

This mod is actually very easy especially in older cars with simpler steering columns. Post your questions and I will be happy to walk you though!

Waid
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Old 12-20-2016, 03:37 PM   #18
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This will be great for someone looking to swap in the new gen V "LT" smallblocks. To the best of my knowledge, all the cars/trucks they come in have electric assist steering and I don't know if there is much out there to retro-fit a hydraulic system to them.
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Old 02-17-2017, 03:59 PM   #19
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Waid,

Am attempting to install EPS on a smallish Mitsubishi tractor. I chose a 2011 Hyundai Sonata since you advised that unit was 'beefier'.

In doing a bench test I am using your hook-up example of the Soul for mine (and they are obviously differently wired) and I'm not getting anything - in the picture I am using the pink wire for on/off and the 2 big wires direct to battery. But I dont get anything!

Would another color wire possibly be for on/off? or?
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Old 02-22-2017, 09:59 PM   #20
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Quote:
Originally Posted by waid786 View Post
No I am in mid-west. I wish I was in Socal!

You guys are lucky to have so many LQK out there so the EPS is easy to find! Recently, I was on business in Socal and visited several LKQ to get Toyota Yaris ECU. The non-ABS Yaris will give variable power assisted based on pulses from speed sensor and works with Prius EPS. I went home with several non-ABS ECU's. I also stopped by LKQ in your home town of Victorville but they did not have any at the time. The Yaris EPS is very small and I would not use it on bigger car.

This mod is actually very easy especially in older cars with simpler steering columns. Post your questions and I will be happy to walk you though!

Waid

For the Nissan Versa EPS, do the torque sensor wiring have to be hooked up for this to work ? I'm getting nothing ! My only guess would be the second pigtail coming from the motor is for the torque sensoring.
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