DIY: Zero-Point Calibration Tool for <$5 in <10 minutes

lightfreak

New member
With this simple, low cost "tool" you can reset your Yaw Rate/Deceleration sensor zero-points without spending $100 at the dealership.
No fiddling with speaker wires and paperclips, this is a more refined, long term solution for performing a zero-point calibration.

Its basically a simple wire harness, OBDII connector on one end, a switch on the other. It will plug into the OBDII port under your dash. No modifications to your vehicle!


First go here and order this 16-pin OBDII connector for less than $2 USD shipping included
OBD2 Connector OBDII 16 Pin Adaptor OBD II Plug Connectors Male OBD 16PIN HFMO | eBay
Took a month to arrive but I wasn't going to complain

Second pull apart any old junk toys or electronics you have collecting dust, you want to salvage a switch from it.
The above ebay seller offers some basic switches for $1 if you don't have one or can't be bothered

IMG_0188_zpspkiigzjt.jpg~original


Some may prefer to use a momentary switch - when pressed, the connection is complete, when released the connection is broken.
The switch I pulled from an old toy is a click-on/click-off type, works for me.

Next you'll need to solder wires to the appropriate pins on the back of the connector.
'03-'04 will use CG pin #4 and Ts pin #14
'05-'-09 will use CG pin #4 and Ts pin #12

There's alot of discussion regarding this on the forum. Search if you need further clarification.

Here's the front of the connector with CG and Ts marked (I have an '04)
IMG_0189_zpsdtoc6ixf.jpg~original


Here's the back with the one half of the connector pulled apart, corresponding CG/Ts pins marked.
IMG_0190_zpsyzex4tpe.jpg~original


Tools needed:

Philips screwdriver, for the 4 screws that come with the connector

2 strands of wire, each about 2-3 feet long.
You want no bigger than 16 guage(it won't fit through the connector tail) and no smaller than 20 gauge since you'll want it somewhat durable.

Soldering gun and soldering supplies (solder wire, flux, heat shrink etc)


Solder the wires to the pins on the back.
IMG_0193_zps5ibermkc.jpg~original


Heatshrink for good measure
IMG_0195_zpsk0b6i3n9.jpg~original

(Melting the plastic on the connector body is optional LOL)


Solder the other end of the wires to your switch, it doens't matter which wire goes to which pole
95fb91b6-5bb6-4e8d-af9c-a0cdcad05ba5_zpspoa3ulrs.jpg~original



Cleanup your wiring, I like it nice and tight
IMG_0197_zpsjy0fv97b.jpg~original



Finished. Test to make sure it works.

Instructions at the bottom of this TSB:
http://www.toyota-4runner.org/attac...-calibration-br005-03_vsc-light-dtc-c1203.pdf
 
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