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ABS lights are on?

Tiny
NASER NASER
  • MEMBER
  • 2004 ACURA MDX
  • 6 CYL
  • 4WD
  • 186,000 MILES
Checked codes under the vtm-4 since it's on along with check engine light, this is what I have.
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Friday, July 31st, 2020 AT 9:44 AM

16 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,702 POSTS
These are two separate issues will we deal with the ABS on this post. Please start a new question for the A/F sensor issue. Let start by replacing the left front wheel speed sensor here is how in the diagrams below. Check out the diagrams (below). Please let us know what happens.
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Saturday, August 1st, 2020 AT 11:58 AM
Tiny
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Is there a way to test it when it's disconnected to make sure it's bad before I purchase another? Resistance maybe?
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Saturday, August 1st, 2020 AT 12:00 PM
Tiny
KEN L
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Yes, there is. this guide will show you how:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Please run down this guide and report back.

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Sunday, August 2nd, 2020 AT 10:36 AM
Tiny
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Replaced the sensor, put it in gear and came back on, scanned it and had low voltage code, cleared it, and tried to view live data on sensors and none are moving. Light came back on, the vim-4, reset again and it went away for now. Didn't drive it yet. It comes on just by moving few feet, but here are the data do you see anything?
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Thursday, August 6th, 2020 AT 8:26 AM
Tiny
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Drove it and vtm-4 came back no codes though but no speed detected from any of the sensors.
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Thursday, August 6th, 2020 AT 8:47 AM
Tiny
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Under vtm this code.
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Thursday, August 6th, 2020 AT 8:49 AM
Tiny
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Under freeze frame.
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Thursday, August 6th, 2020 AT 8:50 AM
Tiny
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More freeze frame.
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Thursday, August 6th, 2020 AT 8:51 AM
Tiny
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  • MEMBER
  • 836 POSTS
Also, not getting the left wheel sensor code anymore, rear other places could be the sensor in the rear end that deals with vim or valve adjustment, possible? Engine runs so smooth, one of the smoothest I have seen actually. And no other codes.
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Thursday, August 6th, 2020 AT 1:18 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Yep, it looks like the ABS module is out here is how to replace it in the diagrams below. Check out the diagrams (below). Please let us know what happens.
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Saturday, August 8th, 2020 AT 11:50 AM
Tiny
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So you think the VSA modulator unit is bad? Shouldn't I be getting codes pointing to that or at least the VSA light on, neither are, only the VTM-4 and this power-train failure code.
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Saturday, August 8th, 2020 AT 11:53 AM
Tiny
KEN L
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Not all the time because there is no code for some failures with the controller.
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Saturday, August 8th, 2020 AT 11:59 AM
Tiny
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We put new tires, balanced, aligned it, new brakes and rotors ll around. I just could not get to why it was giving the vim and check engine light. So took it to the dealer to see why it is still having a shake, even though we replaced all mounts except the rear engine one as it's difficult. They called telling me the rear O2 causing the VTM and check engine light, $530.00. The D was started to flash, I told them that never happened, but okay, they said needs a transmission now, and they recommend a balance and an alignment, I said I just had that done. So I am going to get it and see if I can replace that rear oxygen sensor he is talking about, this is supposed to be on the exhaust before reaching the catalytic correct? The transmission I will see what is going on because it never did flash and he saying not won't shift out of 3rd gear, It only had a delay in 1st. Geez
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Tuesday, September 1st, 2020 AT 2:10 PM
Tiny
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Just to jump in, it appears you are correct. I attached the information on the sensor. Let us know how this turns out but I agree about the transmission. Maybe even a second opinion just to see if you are not sure. Thanks
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Friday, September 4th, 2020 AT 6:44 PM
Tiny
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I drove it home no D flashing, but it still has a delay in 1st gear. I will check out the sensors again. Thanks for the info on the O2.
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Friday, September 4th, 2020 AT 6:57 PM
Tiny
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You are welcome. Keep us posted. Thanks for the update.
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Saturday, September 5th, 2020 AT 6:10 PM

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