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Power steering light on

Old 05-19-2019, 02:14 PM
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Power steering light on

I read through a lot of forms and still canít get the light off.

Problem, power steering light on. Steering wheel with !

What i tried, I took the connectors off and cleaned them I also tested the Ohms on the cables. Nothing worked this far

the wheel still turns easy although this is my first 8 and never driven any other one.
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Old 05-19-2019, 05:50 PM
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Turn wheel all the way left then right.... restart the car and it should be gone
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Old 05-19-2019, 07:02 PM
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Thank you for the information however it did not work. Any other ideas maybe the pcm is bad or a bad steering rack
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Old 05-20-2019, 11:32 AM
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you need to get a scan tool that can read the codes. not a generic obd 2 scanner that you can get for $20, but a mazda specific scan tool like carsoft that costs a little over $100.
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Old 05-21-2019, 03:15 PM
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Originally Posted by schumithecat View Post
you need to get a scan tool that can read the codes. not a generic obd 2 scanner that you can get for $20, but a mazda specific scan tool like carsoft that costs a little over $100.
If you want to read DTC(Mazda-specific), no need to spend that much money.

Buy an ELM-327 adaptor, preferably a cabled one. I got this switched one that can read both HS and MS CAN, but it seems that the 8 only has HS CAN, so you can just leave it like that.

https://www.amazon.com/VINT-TT55502-modified-Windows-ELMconfig-compatible/dp/B01N18TOFB https://www.amazon.com/VINT-TT55502-modified-Windows-ELMconfig-compatible/dp/B01N18TOFB

While you wait for shipping, download a copy of FORScan, which is a software that can read Ford and Mazda(as Ford essentially owned Mazda a while back) codes and even adjust some settings(like turning off TPMS for your track tires). Sign up their forum and once they approve, you can get a free 2-month key to use the software.
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Old 05-26-2019, 06:44 AM
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I tested the volts coming out and going to the pcm Iím getting 7.7 is that normal?
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Old 05-29-2019, 08:24 AM
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Which pin did you test?
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Old 05-29-2019, 10:43 AM
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It was the the thick black and red. Tested it the pcm then out of the noise box also by where the coolent would drop all over the connection.
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Old 05-29-2019, 11:24 AM
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Thick black/red? Like B+ and B-(ground)?
Those should be >12v with the car off and 13V - 14.5V with the car running.
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Old 05-29-2019, 11:58 AM
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I tested where I circled with it running 7.7 volts







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Old 05-29-2019, 12:36 PM
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Under the noise cancellation there is a black relay can the be it? Thank you for the help I have spent hours trying to search this and read so many forms
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Old 06-02-2019, 04:04 PM
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I just went threw the same problems and checked everything and when I replaced the wiring harness for the steering it fixed the problem . I have a 2004 and the harness I replaced was part # F151-67-SHOA . It was $160.00 and easy to replace . I would change that before you do the rack and pinion
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Old 06-02-2019, 04:39 PM
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Thank you. What is the volt reading coming out of the cord going to the rack?
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Old 06-06-2019, 07:15 PM
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Just to let any know who may find this post it turned out to be the module. The voltage coming out should test around 3 and change as you turn the wheel. It was not the cables nor the rack it was the power steering module itís self. Thank you all that tried to help.
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Old 06-06-2019, 07:20 PM
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these modules must fail pretty often, because I just determined mine failed too (using FORScan, after cleaning then replacing EPS harness).
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Old 06-06-2019, 08:57 PM
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So I have for scan light and just got an ond2 with usb how does the FORScan work on the computer
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