Pilot VTM-4 AWD vs MDX SH-AWD - Page 2 - Honda Pilot - Honda Pilot Forums
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post #16 of 57 (permalink) Old 05-29-2012, 02:12 AM
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It's in the owner's manual. You can lock the rear diff for use in L2, L1 and reverse. All 3 used in under 18 MPH. Otherwise, in normal driving, Pilot is front wheel drive until it detects slippage and then it gives power to whichever corner need it.


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post #17 of 57 (permalink) Old 05-29-2012, 09:07 AM
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Originally Posted by jensent View Post
I wish that were true but can find nothing in writing to prove this. If it is more than front wheel drive ,with traction control, at speeds greater than 18mph I wish someone would provide evidence. There is a lot to like about the Pilot and Ridgeline.
Thanks
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Did you try the website: VTM-4

Here's an older write up that describes the system. Things like the torque split have changed over time, but the basics are the same: VTM4

The service manual also has a comprehensive description.

In the many years we haved driven our 2005 in some heavy central new england winters, we have never had to manually engage VTM-4.

Last edited by jl_ss; 05-29-2012 at 09:10 AM.
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post #18 of 57 (permalink) Old 01-27-2013, 08:20 AM
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Originally Posted by jensent View Post
I wish that were true but can find nothing in writing to prove this. If it is more than front wheel drive ,with traction control, at speeds greater than 18mph I wish someone would provide evidence. There is a lot to like about the Pilot and Ridgeline.
Thanks
Tom
Sorry. I realize this is a late response but I just stumbled across this post and thought I could supply a link to answer your question or for anyone else who reads this.

Yes, the system can supply power to the rear wheels at speeds over 18 mph when the VTM-4 system determines the need. The VTM-4 system can send up to 70% of the available torque to the rear wheels if need be.

See Slip Control Logic (mode 2) under VTM-4 modes of operation:
Ridgeline Owners Club | Variable Torque Management VTM-4 Explanation

Edit: here's a link to the 70% number. Bottom of the page.
2013 Honda Ridgeline - Performance - Official Site

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2008 Ridgeline RTS Billet Silver

Last edited by speedlever; 01-27-2013 at 05:52 PM.
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post #19 of 57 (permalink) Old 01-27-2013, 10:35 AM
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Speedlever: that ws explained a few posts before yours
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post #20 of 57 (permalink) Old 01-27-2013, 03:09 PM
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Understood. But I supplied an authoritative link (assuming everyone accepts Gary Flint as an authority) per the poster's request for something other than an internet post.

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post #21 of 57 (permalink) Old 01-27-2013, 05:47 PM
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Pilot VTM-4 AWD vs MDX SH-AWD

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post #22 of 57 (permalink) Old 02-13-2013, 09:50 AM
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I little bit know about it.the VTM-4 AWD setup to be fairly capable of keeping the Pilot moving forward through dirt, loose gravel and mud.

Last edited by richell03; 03-06-2013 at 12:41 PM.
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post #23 of 57 (permalink) Old 02-13-2013, 10:22 AM
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Umm, that's not entirely true. The front acts like an open diff and there's no locker for it. The VTM-4 lock only acts on the rear wheels and can slip above a certain torque value. However, for maximum traction, use VTM-4 lock and leave VSA enabled. Yes, the lock feature is disabled above 18 mph, but will re-engage when the speed drops back into the active range (< 18 mph).

If you need wheelspin in order to maintain momentum through deep sand, snow, or mud, disable VSA.

A low range xfer case does nothing more than provide a low/high range gear selection. VTM-4 does not have such a low range selection. The VTM-4 system utilizes a transfer assembly which enables power to go to the rear wheels when the rear clutches engage and is infinitely variable from zero to a preset limit as commanded by the ECU.

This is fully explained in Gary Flint's article:
Ridgeline Owners Club | Variable Torque Management VTM-4 Explanation

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post #24 of 57 (permalink) Old 02-12-2014, 07:38 AM
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Originally Posted by speedlever View Post
Sorry. I realize this is a late response but I just stumbled across this post and thought I could supply a link to answer your question or for anyone else who reads this.

Yes, the system can supply power to the rear wheels at speeds over 18 mph when the VTM-4 system determines the need. The VTM-4 system can send up to 70% of the available torque to the rear wheels if need be.

See Slip Control Logic (mode 2) under VTM-4 modes of operation:
Ridgeline Owners Club | Variable Torque Management VTM-4 Explanation

Edit: here's a link to the 70% number. Bottom of the page.
2013 Honda Ridgeline - Performance - Official Site
I discovered that the link to Gary Flint's explanation is broken. Here's another link that will provide the information:
Honda Ridgeline Owners Club Forums - View Single Post - Ridgeline VTM-4 Explanation from Gary Flint

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post #25 of 57 (permalink) Old 02-12-2014, 08:59 AM
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I wish that were true but can find nothing in writing to prove this. If it is more than front wheel drive ,with traction control, at speeds greater than 18mph I wish someone would provide evidence. There is a lot to like about the Pilot and Ridgeline.
Thanks
Tom
Ridgeline on a dyno showing all 4 wheels turning above 18mph.

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post #26 of 57 (permalink) Old 02-12-2014, 09:17 AM
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Ridgeline on a dyno showing all 4 wheels turning above 18mph.

Ridgeline Dyno Pulls 6-28-12.wmv - YouTube
I believe 4 wheel dynos turn the rollers at the same speed front and rear.

However beautiful the strategy, you should occasionally look at the results.
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post #27 of 57 (permalink) Old 04-23-2014, 06:18 PM
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I believe 4 wheel dynos turn the rollers at the same speed front and rear.
correct!
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post #28 of 57 (permalink) Old 11-02-2014, 01:09 AM
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Ok, I know this is a necro post, but this thread is great! This explains so much about my new (to me) 2012 Pilot!

Thank you, posters, for this thread.

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post #29 of 57 (permalink) Old 11-30-2014, 07:12 PM
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Ok, I know this is a necro post, but this thread is great! This explains so much about my new (to me) 2012 Pilot!

Thank you, posters, for this thread.
I'll second that thanks! As a newbie researching replacements for our 2003 XC70, the Pilot 4WD and the Acura ADX are the top two spots on the list right now. I want to make sure I understand the differences and this thread has been perfect for that.

I've seen the youtube video evidence of the MDX SH-AWD systems moving the vehicle up a ramp that has rollers placed for replicating slippage. Does anyone have a link to a youtube video showing the Pilot equally capable? My guess is it would manage if it can "lock" the rear side to side.

Thanks again, to all the posters, and the Piloteers forum.
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post #30 of 57 (permalink) Old 11-30-2014, 07:29 PM
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I'll second that thanks! As a newbie researching replacements for our 2003 XC70, the Pilot 4WD and the Acura ADX are the top two spots on the list right now. I want to make sure I understand the differences and this thread has been perfect for that.

I've seen the youtube video evidence of the MDX SH-AWD systems moving the vehicle up a ramp that has rollers placed for replicating slippage. Does anyone have a link to a youtube video showing the Pilot equally capable? My guess is it would manage if it can "lock" the rear side to side.

Thanks again, to all the posters, and the Piloteers forum.
There is a thread here with a link to a Russian video that showed a few 4WD systems. The Pilot was the only one that didn't get stuck as I recall. If I can find the thread I'll post a link in here.
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