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Error Code 84 - VSA sensor neutral position memorization

249904 Views 30 Replies 23 Participants Last post by  Pete_Rock, 
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Some time ago (in July) I had a weird problem which I later resolved, as below.

I have disconnected the navi screen and cd changer, drove a few Km's and after that when I start the engine, the mark "/!\" stays on. Even after I drive, the VSA light stays on.
There is no dealer I can go for service and no scanner available in a the 3000 square Km area. ;(

I jumped 9 and 4 pins. ABS blinks error 84 - "VSA sensor neutral position memorization".
Checked in the manual:



Big letters say: do not press the brake pedal.

I left the pins jumped (connected), turned the key, ABS light was off, I pressed "vsa off", then ABS light was on, again I pressed the "vsa off" button and nothing happened... ABS began to blink error 84 again.
I tried to jump pin 9 with just ground, but nothing changed...

RESOLUTION:

But few days ago I have fixed the problem myself without Dealer Scanner!
First of all you need to clear ABS errors (that is the main problem why i have failed earlier).

1) Jump pins 4 and 9.
2) Press and hold the brake pedal and switch on the ignition.
3) Wait for the ABS light to turn off and then remove your foot from the brake pedal.
4) Wait for the ABS light to turn on, then press and hold the brake pedal again.
5) ABS light should turn off, then remove your foot from the brake pedal.
6) Wait for two flashes of ABS light. If it flashes it means that errors are erased.

Check the errors (with the pins jumped) - just turn the ignition on, if ABS light does not flash, no errors are in memory.

Now the main part.

VSA neutral position setting

Do not touch the brake pedal anymore.

1) Jump pin 9 to chassis ground (I have used a bolt on a door hinge).
2) Turn the ignition on, after ABS light turns off, quickly press the "VSA off" button.
3) After ABS light turns on again, quickly press the "VSA off" button.
4) Now should be a lot of different blinks and flashes and all lights ABS, VSA and triangle should turn off. The problem's solved.
5) Open the beer bottle!

Really I'm not sure what was the real problem of the VSA error but I have some thoughts on this situation.

After I disconnected the navi+cd changer (HVAC if i remember correctly), I left the car for a while. Then after some time I have started the engine without HVAC unit and there was a triangle light. After I drove the car, the VSA light turned on. Maybe HVAC (navy+audio unit) disconnection is just a coincidence. Because few weeks before I had a problem with 1 tire. I hit the front wheel on a turn. I've driven a few km on a low tire (I just missed that part). After I changed to a spare wheel, I have driven to a garage. I am not sure if i pressed "VSA OFF" button, but for sure when I have driven to a garage VSA or triangle lights were not turned on. After this event i have changed four wheels but not tires and have driven about 100-150 km's also. I found that toe-in is lost, I went to a mechanic who fixed it, and after some time I disconnected HVAC unit.... After I have seen a triangle, I have tried to clear errors by removing battery but it did not help, after this I checked the manual, but there was info only about scanner ;(
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Peregrine
Thanks for the info. I edited it to correct the English, but some things I still can't make sens of. From your last paragraph, I have no idea how a low tire or any problem with a wheel relates to you disconnecting the HVAC...
or how a wheel problem could relate to this error...

But the problem description itself and the resolution are now clear. Thanks for the contribution. You got reps for this FAQ.
:thumbsup:
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B
Well i have disconnected the HVAC not in case of damaged wheel (not a tire but wheel), i have disconnected the HVAC cause i wanted to show it to our local audio guru if he can change the FM from US to Euro. As i said, maybe it is a coincidence of two independent events.
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Peregrine
ok, thanks for the clarification.
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B
By saying wheel i mean rim ;)
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W
Hey thanx alot for these info! i had got the wrong info to erase the code 84 first so i was getting no where! i even though of bringin it to the dealer ! thanx mate juste saved me some money!! lights off and i did open up a beer :p
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B
Well if this helped not only me, that a good cause to keep this post :)

p.s. corrected the first post for the image links (the host changed inner structure)
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craig.creationz
How do you know what Pin is Pin 9, can someone please help, I just need to reset the VSA light. Would really really appreciate it.
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craig.creationz
Never Mind Guys, I found it, will try it tommorrow, see if it works.
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Ex S2k
So did you just run a wire from pin 9 to the door bolt?

I just had the left front hub/bearing and speed sensor replaced and now my VSA and /!\ lights are on.
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DDT
Although this is an ancient thread, I want to say a HUGE thank you to Bardissimo for posting this!!! :bowdown1:

The only addition I can make is that pin 4 IS the chassis ground in the OBD-II connector as per:
On-board diagnostics - Wikipedia, the free encyclopedia

So no need to run the wire to the door bolt, just keep everything as in in 4-9 short circuit =)
I did this successfully and all the bloody yellow lights are off for tonight and ABS works. We'll see how they come back later. The only other thing is after you go through the steps and get down to the "have a beer" step, not to forget to pull the pin out of the connector prior to switching the car on again otherwise the yellow lights WILL go back on again and you'll have to repeat the 2nd part of this.
TSXClub rocks, unlike that "other" forum where folks were flaming each other saying that you can't short circuit the 4-9 OBD-II connector with a pin to read the codes.
:ben:
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A
What is HDS
How can I short the SCS circuit to the body using the HDS
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G
Hello Bardissimo I really apreciate the time you spend on this post, your solution help me fix the triangle and VSA light on my Pilot Honda 2006 after I change the crankshaft oil seal, of course I took out the transmission and a lot of conectors but after assembly everything I had this problem, but thanks to you everithing is working again, I only have something left ! The beer bottle of course I will, I send you a hug from Mexico friend, regards !
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A
Bardissimo - thanks worked on 2004 Acura TL. BUT to reset VSA I had to step on the brake pedal for the last step only of VSA procedure -- presto - all lights blinked and turned off. DDT - I found that I had to ground Pin 9 to the seat track bolt to make it work. Ground to pin 4 didn't work on the TL.

Gosh knows how much the dealer would have socked me for. Lived with this for a year. Key was clearing ABS!!
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S
Bardissimo said:
Some time ago (in July) I had a weird problem which I later resolved, as below.

I have disconnected the navi screen and cd changer, drove a few Km's and after that when I start the engine, the mark "/!\" stays on. Even after I drive, the VSA light stays on.
There is no dealer I can go for service and no scanner available in a the 3000 square Km area. ;(

I jumped 9 and 4 pins. ABS blinks error 84 - "VSA sensor neutral position memorization".
Checked in the manual:



Big letters say: do not press the brake pedal.

I left the pins jumped (connected), turned the key, ABS light was off, I pressed "vsa off", then ABS light was on, again I pressed the "vsa off" button and nothhig happened... ABS began to blink error 84 again.
I tried to jump pin 9 with just ground, but nothing changed...

RESOLUTION:

But few days ago I have fixed the problem myself without Dealer Scanner!
First of all you need to clear ABS errors (that is the main problem why i have failed earlier).

1) Jump pins 4 and 9.
2) Press and hold the brake pedal and switch on the ignition.
3) Wait for the ABS light to turn off and then remove your foot from the brake pedal.
4) Wait for the ABS light to turn on, then press and hold the brake pedal again.
5) ABS light should turn off, then remove your foot from the brake pedal.
6) Wait for two flashes of ABS light. If it flashes it means that errors are erased.

Check the errors (with the pins jumped) - just turn the ignition on, if ABS light does not flash, no errors are in memory.

Now the main part.

VSA neutral position setting

Do not touch the brake pedal anymore.

1) Jump pin 9 to chassis ground (I have used a bolt on a door hinge).
2) Turn the ignition on, after ABS light turns off, quickly press the "VSA off" button.
3) After ABS light turns on again, quickly press the "VSA off" button.
4) Now shoud be a lot of different blinks and fashes and all lights ABS, VSA and triangle should turn off. The problem's solved.
5) Open the beer bottle!

Really I'm not sure what was the real problem of the VSA error but I have some thoughts on this situation.

After I disconnected the navi+cd changer (HVAC if i remember correctly), I left the car for a while. Then after some time I have started the engine without HVAC unit and there was a triangle light. After I drove the car, the VSA light turned on. Maybe HVAC (navy+audio unit) disconnection is just a coincidence. Because few weeks before I had a problem with 1 tire. I hit the front wheel on a turn. I've driven a few km on a low tire (I just missed that part). After I changed to a spare wheel, I have driven to a garage. I am not sure if i pressed "VSA OFF" button, but for sure when I have driven to a garage VSA or triangle lights were not turned on. After this event i have changed four wheels but not tires and have driven about 100-150 km's also. I found that toe-in is lost, I went to a mechanic who fixed it, and after some time I disconnected HVAC unit.... After I have seen a triangle, I have tried to clear errors by removing battery but it did not help, after this I checked the manual, but there was info only about scanner ;(
Click to expand...
Excellent, the body shop did nothing, insurance would not pay for dealer. A car fell on my hood and triggered this light. I followed someone else that said hit the tcs on/off switch and it gave me error 84. I then followed yours and error went away and then the second part removed the triangle. On/off button works fine. Thanks a million....
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K
Although I do not have a TSX (I have a 2006 Acura TL), I found this post to be the most complete on the subject.

Recently the ABS, VSA activation indicator (“!” inside the triangle) and VSA system indicator lights came on. Using an Autel scanner, I received DTCs for 16-1 (right rear wheel sensor), 18-1 (left rear wheel sensor) and 84-1 (VSA Sensor Neutral Position). Before taking on the 84-1, I ordered and installed new wheel sensors for both the left and right rear. Then I cleared all DTCs, then took it for a test drive. The ABS light was off and the 16-1 and 18-1 codes did not reappear. The VSA lights both came back on and the 84-1 reappeared.

I then tried to perform the VSA sensor neutral position memorization and thought that the Autel would be able to short the SCS as it has that function within the menu. It even asked if I wanted to continue “shorting the SCS”, which I clicked on “yes”. Once I turned the ignition switch to the ON (II) position and the ABS light came on, then went off, I hit the “VSA Off” switch right away, as per the instructions...the ABS light never came back on for me to hit the VSA Off switch again. Having trying this procedure 15-20 times (every time re-starting with the Autel to short the SCS), I gave up.

Instead of using the Autel, I decided to use your alternative method of shorting pin 9 using a paperclip, connected to a line to the negative (ground) battery terminal. The very first time I did this, the ABS light actually came back on after I hit the VSA off switch, but then the “TPMS” system indicator as well as the message “Check TPMS” came on the multi-information display as I tried the VSA sensor neutral position memorization procedure. The other lights (VSA and ABS) would continue to flash with the TPMS, however I noticed that it was doing a count up of beeping...first it would go odds, then evens, up to 9 and 10 beeps. I tried about 10 times then gave up.

What puzzles me is when I start the car and drive it around, never once has the TPMS light(s) come on. I checked the tire pressure as displayed on the multi-information display, and it was all fine. I also checked using a tire gauge and all were within 1-2 PSI, so I adjusted so that they were exactly to spec. I cleared the 84-1 again, test drove it but the 84-1came back. I also re-tried the VSA Sensor Neutral Position Memorization procedure, but the TPMS message and light keeps flashing when I attempt to do so.

So here I am....84-1 DTC, VSA lights both on and I cannot complete the VSA Sensor Neutral Position Memorization procedure, which should fix the 84-1. Any suggestions/ideas?
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Thank you fathers of internet!! Thank you bardissimo for this ancient thread! Thank you paperclip! You solved my problem :)

There was a difference tho how mine occured. My VSA and /!\ came on when scanning for obd error codes.
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G
So glad I found this thread! I believe that I have the same issue. Will give this a try and report back.
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G
Woot! It worked! Thanks again Bardissimo (dunno if you're still here anymore).
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daviddoroshenko
Bump! Awesome thread!! Helped me reset my VSA!
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