DIY Cruise Control on 07-08 Yaris (step by step)

[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?

[CTScott]

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]

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]

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]

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]

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]

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...