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Author Topic: C305-Ectomy (Lots of pics)  (Read 93813 times)
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alchemist
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« Reply #90 on: October 04, 2010, 07:45:39 PM »

Surely if everything is sealed good, than there wont be corossion of the connectors, right? I mean, I dont see how the elements could get into my car like that

You're 'Tek obviously doesn't have the sunroof.  If you have the sunroof, water WILL get into the vehicle.  Repeatedly.

And as for using Butt connectors...  After removing the connectors, and leaving as much wire as possible, wiring is still very tight.  I don't think it would be possible to locate butt connectors inside the vehicle without splicing in more wire to gain the extra length and screwing up the color codes.  Plus on a connection that has to be 100%, 100% of the time I much prefer solder to a crimped on butt connector, spade connector or any other type of connector.  Solder it, Seal it, and Forget it.
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If you can't fix it yourself, redesign it since it was obviously poorly designed to begin with, otherwise you could fix it yourself.  Right?
Aztek-Knight
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« Reply #91 on: October 05, 2010, 10:58:01 AM »

If you have the sunroof, water WILL get into the vehicle.  Repeatedly.
So true alchemist you hit the mark. My new off the lot Rally has had the water get in from time-to-time... EVIL ELEMENTS! Tongue
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One Aztek Can Make A Difference.
nimrodtoo
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« Reply #92 on: December 30, 2010, 02:11:54 PM »

  So my daughter's 02 AWD has the dreaded full fuel tank, the ABS light , and the AWD light coming on after about 5 minutes of starting. I just performed a 305ectomy, and no change... bummer...  I noticed corrosion on only one of the connections and on one of the wires. So even though it didn't fix anything, thanks Alchemist, for the knowledge and documentation that gave me the confidence to try it. I did make a change anyone who is going forward with this may want to try.
   I took the 305 connector assembly, and since I was not planning on reusing it on another Aztek, I hacked off the body, made a couple of cuts, and used it as a collar to keep the wires off the metal edges and to seal it a bit. As you can see in the second picture, the metal cover would not closse all the way down, so a bit of caulk was used (around the wire bundles too) to help keep the innards dry.
   Hope this helps someone else......
    Nim

The modified C305.


As installed and complete.


Uploaded with ImageShack.us
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nimrodtoo
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« Reply #93 on: December 30, 2010, 09:10:02 PM »

   Update, the ABS and AWD seems to have adjusted to the new configuration and is now working correctly. Now for the fuel gauge and the drivers side bun warmer and everything on this 161K 'tek will be working!!!!
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chiefkyle
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« Reply #94 on: January 30, 2011, 09:30:32 PM »

Did the 305 bypass tonight. Was hoping it would get rid of the AWD Disable and Anti-Brake lights, but it didn't. :-(

Back story: Had Brake, Anti-Brake and AWD Disable lights on. I found a severed hub sensor (passenger rear) replaced the hub and that got rid of the Brake light. Tonight I did the bypass and hoped it would fix the other two, but it didn't.
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jaskispyder
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« Reply #95 on: January 31, 2011, 07:40:23 AM »

Did you check to see if you had continuity in the wire going to the sensor?  Do you have a shop manual?  You could have a broken/bad sensor wire.  I had to replace a front one that looked good visually, but was bad internally.
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dcagedeagle
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Rollin' it Blue Meanie Style!


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« Reply #96 on: February 04, 2011, 06:31:38 PM »

Hey 'Tekers:  Been stranded  ( due to malfunctioning fuel gauge) for the third and final time.  This will be my project once the weather dries up... if it does this weekend that is.  @Ach:  You are Awesome... Thanks for posting this!  Too bad you're not in North Carolina to offer a hand...  Wink.
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Donnie... AKA: Triple D,  D. Eagle ,and/or  Officer Jackass.
WaveMechanic
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« Reply #97 on: March 03, 2011, 04:16:33 PM »

Score a big plus-one for Alchemist and the Aztek Fan Club - like many others I wish I'd found this thread sooner. After an expensive and unnecessary fuel gauge sender replacement, I still have P0449 (evap vent solenoid circuit) and P0452 (gas tank pressure sensor switch low) codes on my 2002 Oldsmobile Silhouette. The Haynes manual doesn't identify or even mention this C305 connector: it took much fruitless websearching before I found this. On the other hand, maybe I should be grateful I haven't lose my fuel pump circuit too.

Hopefully this post will help others in my situation. As ktntek pointed out, many recent GM vehicles have this same lousy C305 connector in the same harebrained location as the Aztek. Thanks to Alchemist's invaluable pictures and CartierBear's harness pinouts (and no thanks to Haynes) I now have a starting point for a fix.

It also occurs to me than anyone can incapacitate most any late model GM vehicle with this body type by simply reaching under the vehicle and unplugging the female fuel system harness connector. Ridiculous, even for GM.

One last question for you admirable Aztek Experts: when I unplugged the fuel system harness connector from the underside of the van and checked for ignition voltage at the male pin 3G inside the chassis C305 connector (connected to a pink wire, powering the evap vent solenoid), I got nothing in any key position.

The Haynes manual says this circuit is powered through a 10A "Can Vent Solenoid" fuse, but no fuse with that name or anything like it is listed in either the underhood or passenger compartment fuse blocks. None of my fuses are blown, so I'm hoping it's the C305 that's bad - but can anyone answer how this circuit is fused on the Aztek, please?
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joshua_r_86055
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« Reply #98 on: June 30, 2011, 07:39:44 PM »

sorry to revive this thread, but after reading this, I couldn't leave without giving my thanks to alchemist, what a life saver fix that was  Grin
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cndcreations
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« Reply #99 on: September 25, 2011, 10:15:14 AM »

alchemist, I hope you read this because I am so very thankful for you taking the time to describe and put pictures up regarding this c305 fix.  Are 02 tek is currently are only vehicle and as such the only way my husband has to get to and from work.  We live on a very tight budget and try to fix anything that goes wrong on our own, but when the tek just quit a month ago we were lost.  After trying numerous things we finally gave up and took it in to a garage who told us it needed a new fuel pump at the cost of $750.  We brought her back home and started researching on how to replace the pump ourselves and that is when we stumbled upon your post.  2 hours later with just the cost of mastic tape and heat shrink tubes she started right up!!!  To think we had actually considered taking her to the scrap yard! You literally saved us and her.  Thank you, Thank you, Thank you!
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MOMSAZTEK
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« Reply #100 on: December 18, 2012, 08:19:22 PM »

Something just occured to me: instead of cutting out the junctions altogether, why not simply relocate them inside of the vehicle, where they could be better protected from the elements?
 My evap vent solenoid is on top of gas tank on my wife's 2003 2 wheel drive Aztek. had code p 0449 and changed but still have code. IT looks like the c305 connector mod for me too.In Florida and its wet here  a lot.
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jazzmanmonty
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« Reply #101 on: July 23, 2013, 05:52:31 PM »

Just performed the operation. Had to solder from underneath car, no lift. Why? Because I didn't feel like the extra work to remove the drivers seat lol. Good news is that my fuel gauge isn't sticking only to only full or near empty. BUT now it hops around all over, and sometimes stays around the 3/4 mark where my reading should be. So my question is does anyone know which color wire controls the fuel gauge? I tried shaking each wire a bit to try to isolate, but because wires so close together they all move, and gas gauge hops around.
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GH
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« Reply #102 on: August 09, 2013, 06:55:45 PM »









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Palm Harbor, FL
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hardwaregrrl
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« Reply #103 on: October 28, 2013, 04:47:30 PM »

Again, thanks alchemist.....just finish my C305-ripotomy.  Check engine light came on today as I headed to the auto parts store.  I let out an evil laugh as popped up....yep, it's gone along with my AWD disable light!!!  Woot!
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shanon2k
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« Reply #104 on: January 10, 2018, 02:02:48 PM »

Seriously.... photobucket is out of their mind!!!! Does anyone have the c305 hardwire pics....non photobucket... ($400 a year to use?Huh)
Thanks!
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