Cruise control wont set after clutch install? ($$ reward for solution!)
 

SOLVED

So for some odd reason the cruise control will turn on, but wont set. This is after doing a clutch and lightweight flywheel install. All plugs are plugged in, but if theres one in particular that would cause this from some kind of position sensing then I can check again. Also, its a manual 2015

Symptoms:
- There is NO CEL!!! again NO Check Engine Light
- cruise control light lights up
- cruise control wont set and set light doesnt come on
-stock (no tune)


What Ive already Checked:
-No there is no CEL
-the car doesnt start in gear so the clutch switch should be fine(right?)
-The brake lights arent constantly on, so the brake switch should be ok(right?)
-The main cruise control light comes on so the fuse should be fine(right?)


Solution:
Took to subaru, Not sure what he did but something with the scanner or maybe something with the clutch switch…not 100% sure since he didn't have time to explain but its fixed so all good.

Did you ever adjust the clutch pedal or mess with the clutch actuator? There's a push-button on the clutch pedal that turns off the cruise (and won't let it activate) if the clutch is pushed in even a little bit.

Turn on the gear indicator (http://www.ft86club.com/forums/showp...16&postcount=4) and see if it shows a gear (1-6, because reverse is ALWAYS displayed regardless of clutch pedal position) when the clutch is fully released.

If it doesn't show a gear besides reverse, you've got a problem with either A) the clutch actuator is messed up and you aren't releasing it all the way, or B) the switch is misaligned (potentially if you did the pedal adjustment incorrectly).

If it shows a gear, at least you can eliminate that button from the troubleshooting...

*** correction, nope gear indicator works fine

Check the two switches for the clutch pedal. They are both adjustable. The lower switch is for the ECU to detect if clutch is disengaged for cruise control and gear indicator, which sounds like your issue. The higher switch is for the ECU to detect if clutch is "fully depressed" as to start the ignition.

Ok I see both, the bottom one is completely pressed and the top one doesnt even touch when the clutch is released. And when pressed the bottom one doesnt touch at all and the top one is pressed in... seems right to me

for some reason cruise is disabled if rear 02 sensor is removed/faulty.

If you have a tune often cel codes related to rear o2 are disabled so you might not get a cel, but rear 02 need to be connected for cruise to work i believe. does the cruise light come up yellow or green ??

Make sure the neural position switch is good / plugged in.

Wheres that? Didn't know manuals had it

yes the manual transmission has one, its on the passenger side middle top section on the rear case section of the transmission.


the wire harness is a few inches long, 2 wires.

here is a picture of it.
http://parts.cioccasubaru.com/showAs...sembly=6027666

check your reverse.. I think you might of swapped the 2 connectors.

Ohhhhh yeah yep its plugged in. I can check it with a volt meter though.

does the one next to it, reverse swapped by chance?

noope. Dont think you can swap those two as far as I know

At this point I would check the data stream and check for cruise control cancel codes, NOTE it does not turn on the CEL.

I am going to assume you drove it over 25MPH in gear and attempted to push the set button?

https://assets.howtune.com/articles/...rew_normal.jpg

That little white protrusion needs to be completely pressed in by the white circular pad when you release the clutch pedal. I presume your new clutch doesn't allow the pedal to return all the way up... or something...

Just checked the neutral switch. Grounds when neutral so seems to work fine

Yeah it's completely in. Like allllll the way completely flush with the plastic stop. Matter o fact I have it all the way out so that's basically what's stopping it from coming back any further.

Huh, I'm out of ideas then. On another note, if the clutch pedal isn't able to come up all the way, it might allow some slippage :confused0068:

Here's the official procedure:


(1) Perform cruise cancel conditions diagnosis.
Perform the diagnosis according to displayed cancel code.

(2) Perform the data list diagnosis.
Check the input signal of cruise control system.

(3) Check the cruise control command switch.
Perform the diagnosis according to the Cancel Code 11.

(4) Check stop light switch and brake switch.
Perform the diagnosis according to the Cancel Code 12.

(5) Check the neutral position switch.
Perform the diagnosis according to the Cancel Code 14 or 62.

(6) Check vehicle speed sensor.
Perform the diagnosis according to the Cancel Code 22.


You'll need a more powerful diagnostic tool to read the codes usually :(


I'd be inclined to think it was the vehicle speed sensor as it would have been unhooked when the transmission was dropped.

Just got back from stealership. I dont know what he did with the subaru diagnostics but its working now. Not really sure what he did but can't complain since I didn't get charged…:iono: