DIY Cruise Control on 07-08 Yaris (step by step) - Page 11 - Toyota Yaris Forums

weaver615 · 03-20-2010, 10:46 PM

HALLELUJAH!!! I have Cruise Control...CTScott, that's what the problem was. The Clutch bypass wasn't at 12 volts...once I moved things around a little and got them to get 12 volts I took the car out for a test drive and WAH LAH!!! Instant cruise control...I thank you ever so much for helping me with this, you are awesome!!!! How can I repay your help?

CTScott · 03-20-2010, 11:01 PM

Excellent!

weaver615 · 03-20-2010, 11:03 PM

Now I just have to get the real clutch bypass switch....I'll call my local dealer Monday and see if I can order one.....Thanks again...I'm TOTALLY Stoked now!!!

weaver615 · 03-23-2010, 03:23 PM

UPDATE: DIY Cruise Control working fine. CTScott, I was wondering if would be possible to add JUST a RESUME switch to the 2 switch method? I was driving to work today and got to wondering this....Is it possible?

CTScott · 03-23-2010, 03:40 PM

Quote:

Originally Posted by weaver615

UPDATE: DIY Cruise Control working fine. CTScott, I was wondering if would be possible to add JUST a RESUME switch to the 2 switch method? I was driving to work today and got to wondering this....Is it possible?

Sure - That would be the 3 switch method...

If you look at the picture below, from my original DIY, if you added a third switch, you would gain resume (and would then have + and -, since they are secondary functions on the set and resume switches)

You could parallel it to your existing rig using a 240 ohm resistor, or redo your switch wiring and just leave off the cancel switch.

weaver615 · 03-23-2010, 06:10 PM

The 3 switch DIY criuse control would be wired like this I believe. Am I correct in assuming this is right? Please excuse the art work...I did this in Paint so it isn't the greatest.

CTScott · 03-23-2010, 08:05 PM

Quote:

Originally Posted by weaver615

The 3 switch DIY criuse control would be wired like this I believe. Am I correct in assuming this is right? Please excuse the art work...I did this in Paint so it isn't the greatest.

Correct

lily · 03-26-2010, 06:35 PM

ok now...i need some help.

well, i've installed a wire with the connector tip, into PIN 40 of the ECU harness.

i've also made the 2-button style controller, just as the illustrations from the previous posts.

and...still no avail.

i have tested out the on/off buttons with a DMM and it reads about 5.24 when pressed and the ignition turned to 'on'. having the key to 'on' and no pressing the button, i get 0 on the DMM.

I NEED HELP TROUBLESHOOTING!

i think that the wire into PIN 40 is not contacting inside the ECU or the buttons are no good. i have the radio shack 275-1548 SPST 'Mini' buttons with a 125 VAC, 0.3amp @ 50 VDC. <<< ARE THESE BUTTONS GOOD ENOUGH TO MAKE THIS WORK???

i've already checked the single resistor to be about 634. <<< Is this OK?

out of ideas no, HELP!!!

CTScott · 03-26-2010, 07:06 PM

Quote:

Originally Posted by lily

ok now...i need some help.

well, i've installed a wire with the connector tip, into PIN 40 of the ECU harness.

i've also made the 2-button style controller, just as the illustrations from the previous posts.

and...still no avail.

i have tested out the on/off buttons with a DMM and it reads about 5.24 when pressed and the ignition turned to 'on'. having the key to 'on' and no pressing the button, i get 0 on the DMM.

I NEED HELP TROUBLESHOOTING!

i think that the wire into PIN 40 is not contacting inside the ECU or the buttons are no good. i have the radio shack 275-1548 SPST 'Mini' buttons with a 125 VAC, 0.3amp @ 50 VDC. <<< ARE THESE BUTTONS GOOD ENOUGH TO MAKE THIS WORK???

i've already checked the single resistor to be about 634. <<< Is this OK?

out of ideas no, HELP!!!

The switches are your issue. Those are normally closed (N.C.) switches, so they act like they are pressed until you press them, then they act like they are not. Radio Shack does not do a good job with labeling their switches.

You need normally open (N.O.) ones. 275-1571 are mini N.O. ones for example.

lily · 03-26-2010, 08:00 PM

AH HA!!!!!!!!!!!!!!!

upon further 'inspecting' the descriptions on the baggy, it does indeed say (in very fine print) "N.C. contacts". <<< I assume this is the "normally closed" which i need "normally open".

tomorrow i will have to go get the ones stated then.

i appreciate the help CTScott.

tune in...

lily · 03-27-2010, 02:30 PM

well...i went and got two different buttons (radio shack part number: 275-0644).

installed it and IT WORKS!!!

YAY...THANKS TO CTScott and others for their pics.

turned out that i had the wrong buttons this whole time. when i initially went to buy the buttons, i swore i thought i saw them as "N.O." but i guess i was reading too fast and was rushing it.

thanks again, now with cruise, its a breeze on them long road trips.

happy driving!!!

CTScott · 03-27-2010, 02:35 PM

Quote:

Originally Posted by lily

well...i went and got two different buttons (radio shack part number: 275-0644).

installed it and IT WORKS!!!

YAY...THANKS TO CTScott and others for their pics.

turned out that i had the wrong buttons this whole time. when i initially went to buy the buttons, i swore i thought i saw them as "N.O." but i guess i was reading too fast and was rushing it.

thanks again, now with cruise, its a breeze on them long road trips.

happy driving!!!

Nice! I'm always glad to hear the success stories.

weaver615 · 03-27-2010, 02:39 PM

CTScott I have the +Res wired per the scematic I put above. Tested and it disconnects the Cruise. I had to use 2 - 120 resistors. Should those be 120K resistors to get 240? I have 120's and 120K's

weaver615 · 03-27-2010, 03:19 PM

Here is a pic of what I have now.

CTScott · 03-27-2010, 03:28 PM

Wow, that's one blurry picture!

OK. You are close - It's two 120's not 120K's (which would be 120,000), so you have the correct values. The problem is that they are in parallel instead of series. They need to be end to end to make 240, not side by side.

weaver615 · 03-27-2010, 05:00 PM

Got it...Re-did them putting them in Series, and all works great now, I thought that was what I did wrong but wasn't sure. Thanks again CTScott 'You da man'!!!!!

Now what should my next Mod be???

yongtaufoo · 04-04-2010, 02:09 AM

Hi guys,

Im trying to install cruise controls for my Yaris (Automatic Transmission) and would like to get some advice from the experts here before proceeding with my DIY:

My ECM A21-40 has a 12V with ignition on. So now all i need to do is to connect the cruise control stalk CCS pin to A21-40 and ECC pin to ground correct?

Do i need to do any other modifications for cruise control to work?

Thanks!!

CTScott · 04-04-2010, 08:29 AM

Quote:

Originally Posted by yongtaufoo

Hi guys,

Im trying to install cruise controls for my Yaris (Automatic Transmission) and would like to get some advice from the experts here before proceeding with my DIY:

My ECM A21-40 has a 12V with ignition on. So now all i need to do is to connect the cruise control stalk CCS pin to A21-40 and ECC pin to ground correct?

Do i need to do any other modifications for cruise control to work?

Thanks!!

That's it for an Auto.

04-04-2010, 02:09 AM	#197
yongtaufoo Drives: My 1st Toyota Join Date: Mar 2010 Location: USA Posts: 3	ECM A21-40 12V? Hi guys, Im trying to install cruise controls for my Yaris (Automatic Transmission) and would like to get some advice from the experts here before proceeding with my DIY: My ECM A21-40 has a 12V with ignition on. So now all i need to do is to connect the cruise control stalk CCS pin to A21-40 and ECC pin to ground correct? Do i need to do any other modifications for cruise control to work? Thanks!!

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03-20-2010, 10:46 PM	#181
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	HALLELUJAH!!! I have Cruise Control...CTScott, that's what the problem was. The Clutch bypass wasn't at 12 volts...once I moved things around a little and got them to get 12 volts I took the car out for a test drive and WAH LAH!!! Instant cruise control...I thank you ever so much for helping me with this, you are awesome!!!! How can I repay your help?

03-20-2010, 11:01 PM	#182
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,450	Excellent!

03-20-2010, 11:03 PM	#183
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	Now I just have to get the real clutch bypass switch....I'll call my local dealer Monday and see if I can order one.....Thanks again...I'm TOTALLY Stoked now!!!

03-23-2010, 03:23 PM	#184
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	UPDATE: DIY Cruise Control working fine. CTScott, I was wondering if would be possible to add JUST a RESUME switch to the 2 switch method? I was driving to work today and got to wondering this....Is it possible?

03-26-2010, 06:35 PM	#188
lily lily Drives: white plane jane Join Date: Oct 2009 Location: MN Posts: 21	ok now...i need some help. well, i've installed a wire with the connector tip, into PIN 40 of the ECU harness. i've also made the 2-button style controller, just as the illustrations from the previous posts. and...still no avail. i have tested out the on/off buttons with a DMM and it reads about 5.24 when pressed and the ignition turned to 'on'. having the key to 'on' and no pressing the button, i get 0 on the DMM. I NEED HELP TROUBLESHOOTING! i think that the wire into PIN 40 is not contacting inside the ECU or the buttons are no good. i have the radio shack 275-1548 SPST 'Mini' buttons with a 125 VAC, 0.3amp @ 50 VDC. <<< ARE THESE BUTTONS GOOD ENOUGH TO MAKE THIS WORK??? i've already checked the single resistor to be about 634. <<< Is this OK? out of ideas no, HELP!!!

03-26-2010, 08:00 PM	#190
lily lily Drives: white plane jane Join Date: Oct 2009 Location: MN Posts: 21	AH HA!!!!!!!!!!!!!!! upon further 'inspecting' the descriptions on the baggy, it does indeed say (in very fine print) "N.C. contacts". <<< I assume this is the "normally closed" which i need "normally open". tomorrow i will have to go get the ones stated then. i appreciate the help CTScott. tune in...

03-27-2010, 02:30 PM	#191
lily lily Drives: white plane jane Join Date: Oct 2009 Location: MN Posts: 21	well...i went and got two different buttons (radio shack part number: 275-0644). installed it and IT WORKS!!! YAY...THANKS TO CTScott and others for their pics. turned out that i had the wrong buttons this whole time. when i initially went to buy the buttons, i swore i thought i saw them as "N.O." but i guess i was reading too fast and was rushing it. thanks again, now with cruise, its a breeze on them long road trips. happy driving!!!

03-27-2010, 02:39 PM	#193
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	CTScott I have the +Res wired per the scematic I put above. Tested and it disconnects the Cruise. I had to use 2 - 120 resistors. Should those be 120K resistors to get 240? I have 120's and 120K's

03-27-2010, 03:28 PM	#195
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,450	Wow, that's one blurry picture! OK. You are close - It's two 120's not 120K's (which would be 120,000), so you have the correct values. The problem is that they are in parallel instead of series. They need to be end to end to make 240, not side by side.

03-27-2010, 05:00 PM	#196
weaver615 Drives: '07 Yaris 3DRH Join Date: Mar 2010 Location: New York Posts: 46	Got it...Re-did them putting them in Series, and all works great now, I thought that was what I did wrong but wasn't sure. Thanks again CTScott 'You da man'!!!!! Now what should my next Mod be???