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

[CTScott]

Originally Posted by i-trans

and this cruise control have a fuse anywhere, in case of shortcut ??
what's happen if utilise N.C switch for testing purpose?
in exemple the first switch are N.C (pin 40 to this switch) , and for the second switch i utilize an N.O switch?
the n.c switch when i push on it its "ON" when i repress on it its "off".
and the second switch its "set"

No fuse - This is just an analog input to the ECM.

A NC switch won't work. The ECM expects to see the input float and then get pulled down to a specific voltage range for it to register. I have reverse engineered the Toyota diagnostics CAN Bus comm to read the cruise control switch state from the ECM, so I can watch how the ECM responds to the inputs.

Have you measured your resistors to see exactly what they read resistance wise. Sometimes you can get a batch that are really at the end of their tolerance band.

[boondocksaint]

Just completed this project! It works! Thanks to everyone that contributed info! :)

[i-trans]

My problem was resolved!!!
My cruise control are fully functionnal!!!

My problem was my resistor....
on the package it was write 390 ohm 1/4 watt, but in reality it was 390k Ohm 1/4 watts...

Thanks you CTScott for you're help!

[rob1005]

I just purchased the clutch switch from Toyota but it did not include any connector or wires. It just has two prongs. How would I go about attaching two wires to the prongs?

Toyota also gave me screws which are too big for the cruise stalk. Which screws do I need?

Thanks for all your help.

[CTScott]

Originally Posted by rob1005

I just purchased the clutch switch from Toyota but it did not include any connector or wires. It just has two prongs. How would I go about attaching two wires to the prongs?

Toyota also gave me screws which are too big for the cruise stalk. Which screws do I need?

Thanks for all your help.

On the clutch switched that I ship to people with 06-08's, I solder wires to the two pins and then individually heat shrink them, and then heat shrink over both as a strain relief. You could also use some very small female spade terminals, if you are not comfortable with soldering to them.

The screws are M5-.80

[packetrace]

Is there a DIY on how to remove the steering wheel and the airnag ?

[CTScott]

Originally Posted by packetrace

Is there a DIY on how to remove the steering wheel and the airnag ?

Yes. My complete DIY has it:

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

[packetrace]

So...I unscrew the 2 side screw..and I pull the whole steering wheel...and It will pop off ?

OBVIOUSLY i disconnect the battery hahaha!

[CTScott]

Originally Posted by packetrace

So...I unscrew the 2 side screw..and I pull the whole steering wheel...and It will pop off ?

OBVIOUSLY i disconnect the battery hahaha!

Section 1, specifically 1.1.1...

[packetrace]

Yes I know..but I mean...I pull on the whole steering wheel...or only the middle part where there is the toyota emblem ?

[CTScott]

Originally Posted by packetrace

Yes I know..but I mean...I pull on the whole steering wheel...or only the middle part where there is the toyota emblem ?

You are only removing the airbag (which is the center portion of the steering wheel), unless you wish to drill the lower steering wheel cover off of the car, or are replacing it with a pre-holed one.

[rob1005]

Just finished installing and works perfectly. Wish the 07s had a cruise light on the dash though. Oh well, thanks for the good DIY Scott.

I was wondering how you managed to feed the clutch switch wires through the firewall. I gave up because of limited space and just fed the wires back through the passenger side grommet.

[CTScott]

Originally Posted by rob1005

Just finished installing and works perfectly. Wish the 07s had a cruise light on the dash though. Oh well, thanks for the good DIY Scott.

I was wondering how you managed to feed the clutch switch wires through the firewall. I gave up because of limited space and just fed the wires back through the passenger side grommet.

With the giant grommet on the driver's side, where the main cable harness goes through, there are two small nipples that you can poke through. You have to first go through with something sharp, and then the wire will feed through.

[Ratz]

For DIY cruise control

When drilling 1-1/8” opening in the steering wheel trim/cover, I used small square of black winds surfing jacket neoprene (just to cover up guts of the switch) and then used sliced windshield washer hose to finish the edge. What can I say , my wife’s attention to details is admirable.

[scape]

Originally Posted by Vince87

Hi all ! as promised in the other thread, here's a Step by Step DIY for the Cruise Control installation (swith method) on 07-08 liftback Yaris (should be pretty similar on the sedan)...

I just to say a special thanks to CTScott for the discovery, the instructions and for his help through the process and also to nickhjort for being the guinea pig for this model.

Enjoy !

Great, quick read. I have question, is the clutch switch just necessary if you do not want the engine to rev out during gear changes while the CC is engaged? I am planning a 1600 mile trip and don't know if I have time to purchase the clutch switch ass.

What kind of wire is necessary, I have a radioshack and a homeimprovement store nearby (and a wallyworld,) I don't know if any of them sell durable wiring-- maybe the home improvement store for inwall wiring.

Did your radioshack, local parts store actually carry resistors?

Any advice from someone who has completed the install is great!

Thanks :)

[CTScott]

Originally Posted by scape

Great, quick read. I have question, is the clutch switch just necessary if you do not want the engine to rev out during gear changes while the CC is engaged? I am planning a 1600 mile trip and don't know if I have time to purchase the clutch switch ass.

What kind of wire is necessary, I have a radioshack and a homeimprovement store nearby (and a wallyworld,) I don't know if any of them sell durable wiring-- maybe the home improvement store for inwall wiring.

Did your radioshack, local parts store actually carry resistors?

Any advice from someone who has completed the install is great!

Thanks :)

The clutch switch can be bypassed, but it's pretty easy to forget and touch the clutch while in cruise control mode.

For the wire, any stranded 18 to 20 AWG wire is fine.

Radioshack will probably have the resistors as part of a multipack.

If you want to do the OEM stalk method I have all of the parts (stalk, clutch switch, ECM pin, etc.) on hand and can ship overnight or two day if you need them quickly. Here's the link to my DIY for the OEM stalk method:

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

[scape]

Originally Posted by CTScott

The clutch switch can be bypassed, but it's pretty easy to forget and touch the clutch while in cruise control mode.

For the wire, any stranded 18 to 20 AWG wire is fine.

Radioshack will probably have the resistors as part of a multipack.

If you want to do the OEM stalk method I have all of the parts (stalk, clutch switch, ECM pin, etc.) on hand and can ship overnight or two day if you need them quickly. Here's the link to my DIY for the OEM stalk method:

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

thanks for the package deal :) but I think i'll wait on the stalk, not sure if I want to spend so much on that yet, nor do I want to dive in to changing the steering wheel stuff so close to my trip. I think I'll hit up radioshack today for the resistors. I have some extra 18awg speaker wire I guess I'll test out unless you suggest not to?
for the jumper, should I just drop in the wire and solder it to the correct locations. I'll probably eventually get the clutch switch but I just want to be able to turn it on and off really, for now.

out of curiosity how much is your kit? :)

oh yeah, from past experience: does braking automatically disengage the CC (since it is ECU i would say yes)?

thanks for the quick reply

[CTScott]

Originally Posted by scape

thanks for the package deal :) but I think i'll wait on the stalk, not sure if I want to spend so much on that yet, nor do I want to dive in to changing the steering wheel stuff so close to my trip. I think I'll hit up radioshack today for the resistors. I have some extra 18awg speaker wire I guess I'll test out unless you suggest not to?
for the jumper, should I just drop in the wire and solder it to the correct locations. I'll probably eventually get the clutch switch but I just want to be able to turn it on and off really, for now.

out of curiosity how much is your kit? :)

oh yeah, from past experience: does braking automatically disengage the CC (since it is ECU i would say yes)?

thanks for the quick reply

For the temporary clutch switch bypass, you can either solder in a jumper or find a small male spade that will fit tightly into the connector along side of the pin.

Kit pricing:

CC Stalk with wiring and mounting screws: $40
ECM connector pin: $5
Connector D3 pins: $5
MT CC clutch switch: $15