DIY - 2009 Cruise Control for $10, without pulling the steering wheel and airbag

[CTScott]

ok cool thanks for the info!, so D3 connector is left side of the yellow connector ? and if there is a blue wire there, then i can just tap into it, if not i have to run a wire through the firewall to the ecm?

Correct on both.

[09sedan]

great news, i just checked and i have all 3 wires, and my dash cluster has the set and CC indicators. :biggrin:

do i have to use the switches you mentioned, or can i use a plain SPST Normally open pushbutton that i can buy from my local electronics store?

[CTScott]

great news, i just checked and i have all 3 wires, and my dash cluster has the set and CC indicators. :biggrin:

do i have to use the switches you mentioned, or can i use a plain SPST Normally open pushbutton that i can buy from my local electronics store?

Any normally open switches are fine.

[09sedan]

people are telling me if i dont use the expensive "aftermarket cruise control kit" which is like 3-500$ with installation that the CC might not disengage or the insurance company wont cover if something happens cuz its a DIY modification :cry::bonk:, are there any risks involved in using this mod? also i got a single 620ohm 1% 1/2Watt resistor, (im using 2 switch method) is that enough?

[CTScott]

people are telling me if i dont use the expensive "aftermarket cruise control kit" which is like 3-500$ with installation that the CC might not disengage or the insurance company wont cover if something happens cuz its a DIY modification :cry::bonk:, are there any risks involved in using this mod? also i got a single 620ohm 1% 1/2Watt resistor, (im using 2 switch method) is that enough?

Cruise control is a function of the ECM. You are just enabling that existing functionality by adding the switches and resistors as an input the ECM. The only way it can "not disengage" is if the ECM fails.

The aftermarket Rostra kit was actually recalled, because it has an issue where RF noise can make it misbehave, so I'd stick with enabling the OEM functionality.

[09sedan]

ok, thanks for the advice, all i have to do now is find out where to mount these buttons :biggrin:, ive decided to just use utility knife to strip away the insulation on the 2 d3 wires and solder them in, i want the best connection possible so soldering is the way to go. i will post up my results once i have finished this project, thanks for the help ctscott! :clap::bow:

[09sedan]

just finished the wiring OMG IT WORKS !!! GREAT SUCCESS!! :headbang::bow: THANK YOU CTSCOTT!! you just saved me almost 500$ !!! :smile: if you ever come to toronto, let me know i owe u a few beers:biggrin:

[bronsin]

Ive had my Yaris World cc for maybe two years now. I drove a friends car with stalk cc and HATED it. My four button cc is SO much easier to use!

Question: one button is on/off, another button is set/decel, and button is resume/accel.

What is the fourth button?

[CTScott]

Ive had my Yaris World cc for maybe two years now. I drove a friends car with stalk cc and HATED it. My four button cc is SO much easier to use!

Question: one button is on/off, another button is set/decel, and button is resume/accel.

What is the fourth button?

Cancel.

[CTScott]

Hi Scott,

If I don't have cruise control in Yaris 2008 EECU ( In NZ ) can I change US market ECU and will it start as normal ? Then can I do my DIY CC ?
Cheers.

Possibly, if you have the 1NZ-FE engine. I believe that your cars follow the JDM Vitz wiring. I have not done a pin for pin comparison of the US versus JDM ECMs to see if any pins need to be moved around.

[CTScott]

Thanks Scott, If its hard I'll go for this option.
www.ebay.com/itm/WEAPON-R-I-THROTTLE-CONTROLLER-BOOSTER-BOOST-SELECTABLE-/290489930851?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2008%7CMake%3AToyota%7CModel%3AYaris%7 CSubmodel%3ABase%7CEngine+-+Liter_Display%3A1.5L&hash=item43a28c9463&vxp=mtr#vi-ilComp

Thanks again.
Chanka

You do realize that that device is not cruise control, but rather a device that makes the throttle seem more responsive?

[azeeroth]

I have the 2009 automatic with OEM cruise control and the stalk annoys me and frustrates my wife even more. We loved the OEM flick stalk on the old Camry!

Could I tap into the wiring and add this even though I have the OEM stalk? Essentially I'd have two sets of cruise control controls... control controls lols :bellyroll: I can't see why I can't do it this way, but I don't want to poke it and end up with no cruise control.

I'd like to add a set of buttons or a joystick somewhere, but leave the OEM stalk in place so when it comes time to sell the car on I can take the secondary buttons out so as to not confuse anyone.

[CTScott]

I have the 2009 automatic with OEM cruise control and the stalk annoys me and frustrates my wife even more. We loved the OEM flick stalk on the old Camry!

Could I tap into the wiring and add this even though I have the OEM stalk? Essentially I'd have two sets of cruise control controls... control controls lols :bellyroll: I can't see why I can't do it this way, but I don't want to poke it and end up with no cruise control.

I'd like to add a set of buttons or a joystick somewhere, but leave the OEM stalk in place so when it comes time to sell the car on I can take the secondary buttons out so as to not confuse anyone.

Can you post a picture of your OEM stalk? I am wondering if your Australian CC is different (and perhaps actually an aftermarket system).

If it is actually the OEM type used on the US Yaris, then you can indeed add the extra set of controls by tapping the two wires.

[azeeroth]

I've had the steering wheel cover off to do the headlight relay mod, and from memory there's just one thick black cable going to this stalk. Presumably that goes back to the same wires you've described though.

http://i1173.photobucket.com/albums/r599/azeeroth/th_5e79c8e1.jpg (http://s1173.photobucket.com/albums/r599/azeeroth/?action=view&current=5e79c8e1.jpg)

Oh yes, this was done by the Toyota dealer before we got the car, so it's as factory as they do it here. I remember asking about the Camry style flick switch and they said something about not being able to do that as factory and they'd have to "put the cruise control in afterwards" so it could be an aftermarket one that Toyota uses.

[CTScott]

I've had the steering wheel cover off to do the headlight relay mod, and from memory there's just one thick black cable going to this stalk. Presumably that goes back to the same wires you've described though.

http://i1173.photobucket.com/albums/r599/azeeroth/th_5e79c8e1.jpg (http://s1173.photobucket.com/albums/r599/azeeroth/?action=view&current=5e79c8e1.jpg)

Oh yes, this was done by the Toyota dealer before we got the car, so it's as factory as they do it here. I remember asking about the Camry style flick switch and they said something about not being able to do that as factory and they'd have to "put the cruise control in afterwards" so it could be an aftermarket one that Toyota uses.


OK - That is definitely an aftermarket system, so there is a module somewhere under the dash or under the hood that controls it.

[voranik]

Hello,

I just bought a 2011 Yaris, and was wondering if this mod is easily possible on that model as well, i.e., is the wiring present from the ECM to under the steering wheel ?

Thanks!

[CTScott]

Hello,

I just bought a 2011 Yaris, and was wondering if this mod is easily possible on that model as well, i.e., is the wiring present from the ECM to under the steering wheel ?

Thanks!

It is for sure for 2011 liftbacks, but Sedans are not as cut and dry. At least up to 2009, if the Sedan did not have the power package, then the wiring was installed from the ECM to a junction connector under the top of the dash, but not from there to the steering column.

The easiest thing to do is to pop the steering column cover and check for the blue and brown wires on connector D3.

[mf4361]

sorry for reviving this thread. I was trying to do this on my Canada 07' Sedan. (I believe this is possible for Canada Yaris right?) But I hit problem when getting the wire from engine bay to interior using the rubber plug next to the ECM.
According to the posted manual, the plug is installed from the engine bay side and one can easily remove it. But on mine, the grommet plug seemed to be installed from the inside so I can't get it out from engine bay. And from the inside, the rubber plug is behind the carpet so I can't reach it either.

Can anyone show me where the grommet plug is from the inside? or is there any other place to get the wire in somewhere else? I'm a noob in car mods and in fact this is the first time I do things like this with a car. Please help! Thanks!

[CTScott]

sorry for reviving this thread. I was trying to do this on my Canada 07' Sedan. (I believe this is possible for Canada Yaris right?) But I hit problem when getting the wire from engine bay to interior using the rubber plug next to the ECM.
According to the posted manual, the plug is installed from the engine bay side and one can easily remove it. But on mine, the grommet plug seemed to be installed from the inside so I can't get it out from engine bay. And from the inside, the rubber plug is behind the carpet so I can't reach it either.

Can anyone show me where the grommet plug is from the inside? or is there any other place to get the wire in somewhere else? I'm a noob in car mods and in fact this is the first time I do things like this with a car. Please help! Thanks!


My full DIY for the OEM cruise stalk (link below) shows where the grommet comes through inside. To get to it you will either have to pull down the carpet a bit, or cut a little slit in it.

http://www.yarisworld.com/forums/showthread.php?t=33750

[trunkout]

doing this tomorrow! THANKS SCOTT YOU THE MAN!!!!

[trunkout]

I believe that someone else found that as well. That means that the 09 Sedans are like the 07-08 liftbacks, which means that you will need to run the wire yourself from the ECM to the switches.

I have an 09 sedan! The wires are there under my steering wheel!
I will post pics tomorrow on the install......

[1972Dart]

Ok I have a 2007 Yaris four door. This looks like a cool mod but i do have one question. Do you not have to have the cruse control vacuum actuator to hold the throttle cable down when you hit the set button? Or is the computer using the throttle position sensor and locking the voltage in at that point? I hope this makes since.

[CTScott]

Ok I have a 2007 Yaris four door. This looks like a cool mod but i do have one question. Do you not have to have the cruse control vacuum actuator to hold the throttle cable down when you hit the set button? Or is the computer using the throttle position sensor and locking the voltage in at that point? I hope this makes since.

Vacuum-based cruise control disappeared with cable throttles. The Yaris is drive-by-wire, where the accelerator is just an input the the ECM and it in turn drives the throttle motor. Because of this cruise control becomes a simple set of switch inputs to the ECM (ON/OFF, Set, etc.) and the ECM does all of the rest of the work.

So, for your 2007 (and any US/Canada Yaris 2006 to present) what is documented in this mod, or for a few more dollars adding the OEM stalk will give you cruise.

This DIY discusses the OEM stalk method. I carry all of the parts for doing that route for quite a bit less than dealer pricing.

http://www.yarisworld.com/forums/showthread.php?t=33750

[trunkout]

That was so easy it's scary. Ten minutes tops. All parts ready at radio shack. 8 bucks.

[CTScott]

So I just wired the black wire from the d3 connector in with the red and blue wires. The horn when pushed turns on cc but the switch still doesn't do anything. Am I missing a ground or a power wire for this?

Post a picture of how you wired your switches and your connections to D3. It does sound like you have an issue, as the horn pad grounds to black wire to make the horn honk.

[62Fender]

Hope you don't mind a question from a non-Yaris owner?

Great thread! I imagined a ~$10 mod would look like it but it's every bit as aesthetic as functional. I installed an oem kit stalk and it's almost in the way compared to dash buttons.

The basic Scion TC "CRUISE" light does not have a "SET" indicator. Is it possible to add a single LED as a "SET" indicator without having to tap the CAN circuit?

[CTScott]

Hope you don't mind a question from a non-Yaris owner?

Great thread! I imagined a ~$10 mod would look like it but it's every bit as aesthetic as functional. I installed an oem kit stalk and it's almost in the way compared to dash buttons.

The basic Scion TC "CRUISE" light does not have a "SET" indicator. Is it possible to add a single LED as a "SET" indicator without having to tap the CAN circuit?

No. For set you would need the CAN message from the ECM.

[62Fender]

Cool. My ECU diagram lists CAN L and CAN H. Would a voltage test during cruise "set" indicate which CAN could be tapped for the hot side of the LED? Opposite side of LED to ground?

[CTScott]

Cool. My ECU diagram lists CAN L and CAN H. Would a voltage test during cruise "set" indicate which CAN could be tapped for the hot side of the LED? Opposite side of LED to ground?

The CAN bus is a high speed computer network. You would need an intelligent device to decode the messages and light the LED when the appropriate message comes across.

What year is your TC?

[62Fender]

Are we talking wave form instead of voltage? I probably better stick with the basic cruise light.

The TC is a 2008 'spec'. Thanks for the info.

[CTScott]

Are we talking wave form instead of voltage? I probably better stick with the basic cruise light.

The TC is a 2008 'spec'. Thanks for the info.

Even more than wave form - We are talking about an encoded message within a stream of pulses. I actually have an enhanced version of my cruise control indicator module that I developed, which can drive separate LEDs for ON and SET. I haven't offered it for sale as of yet, as it is a $50 device, as opposed to the $25 one that just handles reading "ON" via the feed between the switch and the ECM. Set is more complex, as you really need the message feedback from the ECM to know that all conditions were met to allow the ECM to set it.

[62Fender]

Thanks for the info. Any plans to make the 'set' indicator available separately?

[CTScott]

Thanks for the info. Any plans to make the 'set' indicator available separately?

I can easily do that. It is just a matter of not having the second LED for "ON".

[62Fender]

Dear CTScott,

Was wondering if this idea could be applied to remote audio controls, (ie seek/volume) without having to fork for the steering wheel upgrade? My head unit has the wires that typically go to the clockspring. The volume dial has to be turned too many times to be useful. I'd like to have an up/down rocker-type control if possible.

I thought about using two rockers for volume and seek plus a momentary switch for the "mode" selector.

Is this possible without adding resistors to the switches or does the head unit require variable voltages to know which switch is being pushed?

[CTScott]

Dear CTScott,

Was wondering if this idea could be applied to remote audio controls, (ie seek/volume) without having to fork for the steering wheel upgrade? My head unit has the wires that typically go to the clockspring. The volume dial has to be turned too many times to be useful. I'd like to have an up/down rocker-type control if possible.

I thought about using two rockers for volume and seek plus a momentary switch for the "mode" selector.

Is this possible without adding resistors to the switches or does the head unit require variable voltages to know which switch is being pushed?

The headunit would require resistors for each function. If you have an aftermarket one, some of those use more complex methods than resistance.

[andreas14]

can this work with vitz 2005 2SZ-FE SMARTKEY(KEYLESS ENTRY START BUTTOM) NO KEY AND IGNITION SWITCH HOLE

[CTScott]

can this work with vitz 2005 2SZ-FE SMARTKEY(KEYLESS ENTRY START BUTTOM) NO KEY AND IGNITION SWITCH HOLE

No. There is no easy cruise solution for the Vitz.

[CTScott]

After all this years did any one find how to install cruis control for yaris if the measure between pin 40 and ground is 0 volt

If pin 40 is zero volts, then your only option is an aftermarket solution, such as the original Rostra kits (the kits with the non-OEM looking stalk).

[David C]

Thanks again for the write up, today I just did my brother's car cruise control, after doing mine a while ago shortly after buying the car.

I've been wondering though why did toyota chose to have a non persistent CC function rather than always on like I've seen on other manufacturers. What's the idea behind the on/off design rather than just a standby ?

[Yarauto]

Recently ran across info from CTScott from 2009 on how to install a “two button” control on an 09 base model Yaris (The only luxury on this car is A/C).
Upon inspection of the D3 connector I found that there is only one black wire coming from that connector (no blue or brown wires).
Does that change the usability factor on this car for the “build my own” 2 button control system?

Thanks for any info you can provide.

Yarauto

[Kasbien]

So I read through the entire thread but didn't find a solution my issue (some similar cases but no resolution).

I have an 07 sedan, auto transmission, Canadian car. I went to perform this mod today, only to find that I have a factory wire (pin 40) at the ECM connection but no wire at the D3 connection under the steering wheel. No CC lights in the cluster either. Car has been dealer serviced since day 1.

Anyone else figured this one out?

EDIT:
Found the solution in another thread. The pin 40 wire seizes to exist after the firewall connection (AD4) on the drive side of the vehicle. Weird! See attached photo. Hope this helps someone out because it sure as hell gave me headache.

[KermitAUS]

Following.

[KermitAUS]

Has anyone done this in Australia?