OEM cruse control on spec tc - Scion tC Forums
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post #1 of 9 (permalink) Old 12-26-2013, 03:22 PM Thread Starter
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Default OEM cruse control on spec tc

I have the 08 spec tc and I got the upgraded leather steering wheel for chrismas. This wheel includes the cruse control module and I was wondering if my spec has the necessary wording harness to just plug it in.
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post #2 of 9 (permalink) Old 12-28-2013, 02:11 AM
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...have you tried looking?

Another thread here, but it doesn't look like they got very far either.

Although they did raise a good point about steeringwheel control wires too.


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post #3 of 9 (permalink) Old 02-27-2014, 08:11 PM Thread Starter
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Default Making progress

Yes I did try looking and here is as far as I got:

I found the manual for the cruse control switch from rostra (they are the ones who make the oem switch from what I have read). The manual says that on most vehicles it should be plug and play, but in the "troubleshooting" section they say that some FJ Crusers (It is for a variety of Toyotas) are not pre-wired for cruse. They say to remedy this you need to run a wire from pin 5 on the black connector coming off of the clock-spring connector behind the steering wheel to pin 2 on the E46 connector on the ECU (Diagrams in the manual). So I went to run the wire and realized that there is a wire in pin 2 on the E46, but there wasn't one in pin 5 of the black connector. Should I just splice into the blue/grey wire in pin 2 or can anyone tell me where it goes? also can someone confirm that that is the pin I am supposed to connect the cruse to?

Here is a picture of my ECU (the blue/grey wire is in pin 2 which is kindof hard to see)
and here is a picture of the black connector behind the steering wheel (the red wire is the one I added)
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post #4 of 9 (permalink) Old 02-28-2014, 06:53 PM
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I'll be able to look at my factory setup after I get moved into my new place in FL

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post #5 of 9 (permalink) Old 03-01-2014, 03:02 PM Thread Starter
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That would be great, could you also probe it with a multimeter to see if pin 5 on the black connector is connected pin 2 on the E46?
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post #6 of 9 (permalink) Old 03-02-2014, 08:01 PM
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Potentially...I'd say it's not due to different resistance between the two for different inputs. I'll check the wiring schematic when I go to do this...gonna be a little bit though because I just moved to FL and I'm working on getting a new place.

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post #7 of 9 (permalink) Old 04-23-2014, 12:16 AM Thread Starter
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Originally Posted by RoboTuner View Post
Potentially...I'd say it's not due to different resistance between the two for different inputs. I'll check the wiring schematic when I go to do this...gonna be a little bit though because I just moved to FL and I'm working on getting a new place.
Have you been able to check this out? I have not been able to Ind any more information.
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post #8 of 9 (permalink) Old 07-28-2015, 10:33 AM
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Pheonix, I never did get to do the probing as life with my tC was hell (check the last post in my thread). I really do apologize for not checking back sooner, and I'm stilll down to help if you're cool with the delay? I hope you didn't probe the wrong wire and pop your SRS!!

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post #9 of 9 (permalink) Old 09-03-2015, 06:25 PM Thread Starter
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I never did get around to probing, I was going to try to install it soon. I can still only find instructions for an FJ though, I was going to just try to splice the wire I mentioned above and hope nothing went wrong.
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