Turning off/disabling VDC (For real.)
#77
10-03-2008, 11:32 AM
Originally Posted by Sagemark
After talking to a knowledgeable dealership professional about VDC off functions I learned that when VDC is turned off, TCS remains on.
Exactly what the nuances between what VDC does and what TCS does, I don't know, but what I have been told is that the 350z Enthusiast model is the only model that has no TCS, so when VDC is turned off, there is no system interference. All other 350z's and all G35s have a TCS system operating at all times, regardless of whether you turn off VDC, unless the G-Sensor (also called a Yaw sensor) has been disconnected.
If you are not experiencing the TCS operating then the only possibilities are:
#1. You aren't pushing the vehicle into a condition where TCS takes action.
#2. You aren't realizing that it is taking action when it is.
#3. Your TCS system has failed or is malfunctioning (without throwing a code or warning light).
#4. The experiences of the many folks who have experienced TCS operating with VDC off all have cars that Nissan built with a different set safety system parameters than the car you happen to own AND the dealership I spoke with on the subject is misinformed on the subject.
We can all believe what we want to believe, but I strongly doubt that #3 or #4 are at all likely.
Exactly what the nuances between what VDC does and what TCS does, I don't know, but what I have been told is that the 350z Enthusiast model is the only model that has no TCS, so when VDC is turned off, there is no system interference. All other 350z's and all G35s have a TCS system operating at all times, regardless of whether you turn off VDC, unless the G-Sensor (also called a Yaw sensor) has been disconnected.
If you are not experiencing the TCS operating then the only possibilities are:
#1. You aren't pushing the vehicle into a condition where TCS takes action.
#2. You aren't realizing that it is taking action when it is.
#3. Your TCS system has failed or is malfunctioning (without throwing a code or warning light).
#4. The experiences of the many folks who have experienced TCS operating with VDC off all have cars that Nissan built with a different set safety system parameters than the car you happen to own AND the dealership I spoke with on the subject is misinformed on the subject.
We can all believe what we want to believe, but I strongly doubt that #3 or #4 are at all likely.
I have attached the single best page from the FSM that supports the claims.
#78
10-06-2008, 01:42 PM
Thanks!
I appreciate your comments after enduring incessant beating down on this subject by folks who are just so sure it ain't so...
Originally Posted by rcdash
Great post and nice thread. I have validated all claims in my FSM for a 2004.5 G35 coupe and I believe the OP has explained through observation and investigation how the system actually works. Well done.
I have attached the single best page from the FSM that supports the claims.
I have attached the single best page from the FSM that supports the claims.
#79
08-24-2009, 03:06 PM
#80
10-06-2009, 12:07 AM
#81
10-23-2009, 06:47 AM
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I loved that artical btw
#82
10-24-2009, 05:15 PM
Read every post to page 4 and my eyes hurt. My experience is that TSC might take steering angle into affect. (04 6MT Sedan)
If i do a hard drop in a straight line, I don't seem to have any interference with VDC off.
If i try to lose the tail end at with the wheel turned more than (guessing here) 20-30*, my SLIP light comes on and there is interference.
If i do a hard drop in a straight line, I don't seem to have any interference with VDC off.
If i try to lose the tail end at with the wheel turned more than (guessing here) 20-30*, my SLIP light comes on and there is interference.
#83
11-03-2009, 02:30 AM
i have an 05x, and ill have to try it. i have vdc turned off almost all the time. with it off, i get the slip light once in awhile. most of the time, when going down a driveway slanted it starts flashing for a few seconds, only reason i can think of is one tire slips alil cause less pressure on it?
ive never felt the secondary system kick in, but honestly, with my tires, coilovers and the awd... i rarely loose traction. ive autocrossed it, but usually trying to figure how to fit it through the miata chicago box...
also, ive disabled the awd system and gotten it to get alil back happy, but never really tried it that much. ill have to try some different things and see what happens
ive never felt the secondary system kick in, but honestly, with my tires, coilovers and the awd... i rarely loose traction. ive autocrossed it, but usually trying to figure how to fit it through the miata chicago box...
also, ive disabled the awd system and gotten it to get alil back happy, but never really tried it that much. ill have to try some different things and see what happens
#84
11-05-2009, 06:06 PM
I would recommend everyone check their fluid on a regular basis. I installed a BBK, and filled with ATE Super Blue fluid, and was within the Min/Max marks on the reservoir, and had the VDC and SLIP lights coming on on random occasions. I topped off the fluid, and the lights went away, and stayed away.
Just my $.02
Ian
Just my $.02
Ian
#85
11-30-2009, 09:48 AM
Just installed a switch on mine and wanted to share some pics 
YAW sensor with connector unplugged
Plug showing the orange wire to cut
Install some wires to a switch and insulate with heat tube
The switch
The switch now installed under armrest.
"On" (closed) position with cluster showing no VDC or Slip lights
"Off" (open) position with cluster showing VDC and Slip lights
Now, "vdc off" and YAW switch engaged with cluster showing only VDC light (normal operation)
Now ready to drift !
YAW sensor with connector unplugged
Plug showing the orange wire to cut
Install some wires to a switch and insulate with heat tube
The switch
The switch now installed under armrest.
"On" (closed) position with cluster showing no VDC or Slip lights
"Off" (open) position with cluster showing VDC and Slip lights
Now, "vdc off" and YAW switch engaged with cluster showing only VDC light (normal operation)
Now ready to drift !
Last edited by SyCo; 12-02-2009 at 07:45 AM.
#87
12-01-2009, 08:59 AM
#89
12-02-2009, 07:51 AM
#90
12-02-2009, 10:41 PM
ok, thats what I understood initially. Just making sure. thanks for the clarification.
Do you notice better off the line response? Its been speculated for a long time that the ECU cuts throttle when holding the brake and the gas pedals simultaneously because of the YAW sensor. Does this hold true?
Do you notice better off the line response? Its been speculated for a long time that the ECU cuts throttle when holding the brake and the gas pedals simultaneously because of the YAW sensor. Does this hold true?