Can we do this? (aka The DIY Cruise Control Thread)

[CTScott]

Originally Posted by stvee

Took off steering column cover and I've got one black wire. Still calling this a win if I don't have to take the steering wheel off anymore.

So two wires where the blue and brown ones would be. Which one goes where? All the crosstalk between autos and manuals and stalks and switches has jellied my brain. Should I switch to PM or something? I'm feeling less potentially instructive by the minute.

The Blue is the wire that needs to be run to the ECM. The brown is a ground.



In this thread, I have the part numbers for the pins for that connector:

http://www.yarisworld.com/forums/sho...ght=diy+cruise

[stvee]

We are talking about the connector furthest left of that picture, right? I ordered two spiral connector repair terminals and one ecm repair terminal. The connector in the ecm repair terminal looked like a perfect fit for the ones in the steering column. Should I go for two more of those or do I have the wrong connector?

[CTScott]

Originally Posted by stvee

We are talking about the connector furthest left of that picture, right? I ordered two spiral connector repair terminals and one ecm repair terminal. The connector in the ecm repair terminal looked like a perfect fit for the ones in the steering column. Should I go for two more of those or do I have the wrong connector?

Yes - Left most connector. The pins are slightly different for the ECM and the spiral cable connector. The part numbers are listed in this thread:

http://www.yarisworld.com/forums/sho...ght=diy+cruise

[rhaagusa]

Did you get your stalk from Thailand working? If so, what did you need to do? Robert

[rhaagusa]

I just received the stalk (Thailand eBay, $30) to use on a new 2010 sedan automatic. It came with a wire (2 wires attached to the white plastic clip/plugs at each end). Can anyone tell me if I just plug it in as is, or do I need to switch over what has been called the airbag or horn ground wire?

[CTScott]

Originally Posted by rhaagusa

I just received the stalk (Thailand eBay, $30) to use on a new 2010 sedan automatic. It came with a wire (2 wires attached to the white plastic clip/plugs at each end). Can anyone tell me if I just plug it in as is, or do I need to switch over what has been called the airbag or horn ground wire?

If it came with a cable that has a white four pin connector, with two going to the stalk, one empty and one going to a female spade lug, then you pull off the existing horn cable and plug the new one into the horn and connect it to the spiral cable connector.

If it came with a cable that has the white connector, but lacks the horn wire, then you have to remove the horn wire from the existing white connector and transfer it to the new one.

[rhaagusa]

Thanks CTScott and all for the info. I did later find the answer to this question had been answered earlier. So much info and so many threads. We're really happy and thankful to be getting cruise so inexpensively and easily. Robert H

[rhaagusa]

Went by the dealer to get the proper screws which they didn't have, but found out they appear to be 5mm. I checked at Loews and 10/32 does fit loosely in a 5mm nut, but 5mm should fit right.
One more question please: While I was there he showed me a little pack of what I think was 2 black wires, and some zip ties. He said it was required, and it cost $12. At one end was the very small ends that go in the white clip type connectors, and at the other end of one was a screw down round tab type like used for a ground, that fits under a nut or screw head. Couldn't see the other ones end through the baggy packaging.
So anyway what are these wires and are they needed on a 2010 sedan automatic? If so where do they go and are there any directions and pics posted?
Hoping to only go in there once, so thanks very much, Robert

[CTScott]

Originally Posted by rhaagusa

Went by the dealer to get the proper screws which they didn't have, but found out they appear to be 5mm. I checked at Loews and 10/32 does fit loosely in a 5mm nut, but 5mm should fit right.
One more question please: While I was there he showed me a little pack of what I think was 2 black wires, and some zip ties. He said it was required, and it cost $12. At one end was the very small ends that go in the white clip type connectors, and at the other end of one was a screw down round tab type like used for a ground, that fits under a nut or screw head. Couldn't see the other ones end through the baggy packaging.
So anyway what are these wires and are they needed on a 2010 sedan automatic? If so where do they go and are there any directions and pics posted?
Hoping to only go in there once, so thanks very much, Robert

Can you post a picture of what wiring you received with your stalk? From that I can tell you whether you need the wires he was trying to sell you.

As for the screws, the one that I bought (attached to a Scion steering wheel) had the screws with it. I just checked with my extra steering wheel and an 8-32 screw fits. I don't have a 5mm to try, but I tried 5mm taps (fine and coarse) and they seem to be too big for the hole.

Here's a picture of my Scion one mounted and wired. The Scion cruise cable had a different spiral cable connector, so I pulled the pins out of the connector and moved them to the Yaris connector.


Cruise Stalk.jpg

[rhaagusa]

As you've probably seen, the ebay Thailand stalk photo doesn't show the connector. though the connector looks just like the one in your photo with spots to accept 4 wires, though it comes with just 2 wires coming from the stalk. It's also the same as the ones in photos 3, 4, and 5 posted here (though it has no horn/ ground which as you said I'll be transferring):
http://www.toyotanation.com/forum/sh...171992&page=22[IMG]

I'm wondering if the wires the parts guy showed me are for wiring to the ECM, though th chart you posted (man you're really on top of all these threads) says my 2010 automatic Sedan doesn't need these. What do you think?
http://www.yarisworld.com/forums/sho...ght=diy+cruise

Again, thank you so much! Robert

[CTScott]

Originally Posted by rhaagusa

As you've probably seen, the ebay Thailand stalk photo doesn't show the connector. though the connector looks just like the one in your photo with spots to accept 4 wires, though it comes with just 2 wires coming from the stalk. It's also the same as the ones in photos 3, 4, and 5 posted here (though it has no horn/ ground which as you said I'll be transferring):
http://www.toyotanation.com/forum/sh...171992&page=22[IMG]

I'm wondering if the wires the parts guy showed me are for wiring to the ECM, though th chart you posted (man you're really on top of all these threads) says my 2010 automatic Sedan doesn't need these. What do you think?
http://www.yarisworld.com/forums/sho...ght=diy+cruise

Again, thank you so much! Robert

If your Thailand one has the two wires from the stalk (in the positions shown in my picture above) then you don't need the wires that your parts guy showed you. The wires you described would be for adding the two connections from the stalk to the existing connector.

As for the ECM run, it seems to be hit or miss with 09 sedans. You'll have to look at the spiral cable connector, under the steering wheel for the brown and blue wires, and then also check the ECM connector to see if pin 40 is populated.

[rhaagusa]

OK, sounds good. I'll look to check for the brown and blue wires, and ECM connector and pin 40. Are these all easily visible with the air bag off, or can you direct me to any threads with info on checking these.

[CTScott]

Originally Posted by rhaagusa

OK, sounds good. I'll look to check for the brown and blue wires, and ECM connector and pin 40. Are these all easily visible with the air bag off, or can you direct me to any threads with info on checking these.

No need to pull the airbag. Just remove the lower steering column cover to see the spiral cable connector (the one in the lower left is the connector you are looking for). It will either have just a black wire, or will have the black, brown and blue like this picture:




For the ECM connector, you have to pop the connector, and then you can look at the business end of the connector to see if the pin is populated (shining a flashlight into the connector will help you to see if the metal pin is in the hole for pin 40).

[rhaagusa]

Thanks for your patience. Hope this is not sounding too dumb; how do I remove the lower steering column cover, and how do you tell which is pin # 40. Is it labeled?

[CTScott]

Originally Posted by rhaagusa

Thanks for your patience. Hope this is not sounding too dumb; how do I remove the lower steering column cover, and how do you tell which is pin # 40. Is it labeled?

This thread shows the location of the three screws for removing the lower steering column:

http://www.yarisworld.com/forums/sho...ght=diy+cruise


And, this one shows the details of checking pink 40 on the ECM connector. The pins are not labeled, but you can easily find the pin 40 position with the photo as a reference.

http://www.yarisworld.com/forums/sho...e+module+%2425

[rhaagusa]

Got it. Doesn't look to hard. With gratitude, RH

[CtrlAltDefeat]

Originally Posted by yarismadness

Guys,

I had I idea, and i need your opinion before trying it.

The yellow wire on the clutch switch that blocks the start (i am talking about the one on the bottom, not the additional we should add to stop the cruise), has normally (when released) 12V, high impedance (my guess is a pull up resistor inside the ECU). when pressed (the clutch needs to go to the bottom), that line goes near 0V (pulled down by the starter relay coil).

What if we sense that in order to stop the cruise? For example, a mosfet transistor will do the job perfectly.

The problem: the cruise will disable ONLY if the clutch is COMPLETELY pressed. What will happen during the clutch travel?
Cheers!

I'm not an expert but I'm pretty sure the engine will rev up. disengaging the clutch will slow the car, which the ecu will see and will give it more gas to try to maintain speed. most of the time you do not floor the clutch (which would be required for this to disengage the cruise). I personally would not like this solution...

[CTScott]

^Exactly. The starting clutch switch and the cruise clutch switch have exactly opposite purposes. The starting one is a "safety" which wants to see the clutch fully depressed and the cruise one cancels cruise mode to prevent revving as soon as the clutch is touched. The OEM clutch switch is under $20, so it's really not worth looking for an alternative solution.