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Author Topic: C305-Ectomy (Lots of pics)  (Read 98098 times)
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Pontiac6KSTEAWD
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« Reply #105 on: January 11, 2018, 04:22:29 PM »

I dont. And I tried every trick I knew to get those pics.

Some things I have located on the net...

https://sparkys-answers.com/2008/04/1998-pontiac-montana-fuel-pump-fuse.html (Pontiac Montana, same as Aztek)

The few things I remember from doing this years ago. The plugs are underneath the drivers seat, and the seat has to be removed. It does help to also have the drivers rear seat also removed. The -B- Pillar trim needs to be loosened but not removed. The door sills also need to be removed, and will never go back in correctly.Once those are out of the way, you can roll back the carpet, to reveal the C-305 connector. I used a drill to take out the rivet holding the tin plates in covering the back of the C-305 connector. I did it one wire at a time. Solder, dielectric grease, and heat shrink every wire. The dialectic grease to me is the most important part, it stops corrosion from getting at the copper wiring that you will be exposing when cutting the terminals out. I used a nut and bolt to put the plate back over the modified wiring to protect the new C305 connector.
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Brian - Carpe Diem

01 Pontiac Aztek GT OPT AWD 110k - 04 GMC Envoy XUV 150k

BlueGT
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« Reply #106 on: January 13, 2018, 01:53:37 AM »

Good link to have Brian, thanks!

I completely bypassed mine, I didn't really have to remove the front seat or b-pillar moulding, just the sills, rear seat and the trim around the rear seat anchors, there was plenty of room to work with those out of the way after lifting up the carpet.
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2001 Steel Blue Metallic GT 1 of 1956 FWD blue GTs.
shanon2k
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« Reply #107 on: January 18, 2018, 04:43:18 PM »

Ok... I have a 2004...
The wiring on both sides of the connector do not match...😂
Some do. But there were several that had to do educated guess...
Any input.?
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Pontiac6KSTEAWD
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« Reply #108 on: January 26, 2018, 05:13:04 PM »

If you match up the wire from the front to the back, and do it one wire at a time, you should be fine.
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Brian - Carpe Diem

01 Pontiac Aztek GT OPT AWD 110k - 04 GMC Envoy XUV 150k

BreakingBudget
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« Reply #109 on: March 18, 2018, 02:53:23 AM »

This links to a screenshot of the Photobucket thumbnails for the photos that were once displayed in this great post.
(I had no luck embedding the screenshot. I hope a link to pasteboard is okay.)
http://pasteboard.co/HcrjLvR.jpg
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fugpuppy
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« Reply #110 on: May 15, 2018, 04:13:31 PM »

Hope this is acceptable

















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Pontiac6KSTEAWD
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« Reply #111 on: May 15, 2018, 06:59:57 PM »

Very nicely done
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Brian - Carpe Diem

01 Pontiac Aztek GT OPT AWD 110k - 04 GMC Envoy XUV 150k

Tronman
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« Reply #112 on: May 19, 2018, 12:37:02 AM »

So while my engine is apart, and therefore everything under the hood is really easy to access, I decided to fix my ABS wiring.  I got two of the front harness connectors with wire pigtails from eBay for $28 shipped.  I really would rather use a local parts house but none of them had it, not even the dealer.  So.. eBay it was.  The right front wire came out in four pieces, and the left front wire connector had come out and been dragging the ground for some time.  Both fixed, soldered and heat shrinked, properly routed like the originals.  Now at the ABS computer connector, both front ABS sensor circuits present the proper ~1025 ohms resistance found at the wheel sensors themselves.  The rear sensors are open circuit, both of them.

So the first connector from the rear sensors going forward is the dreaded C305.  The female wiring harness plugging into it has the proper sensor resistance values for both rear circuits-meaning the sensors and wiring are good from the back wheels to this connector.  I'm just trying to work my way forward to find where the electricity stops flowing so I only have to dismantle one-the actually broken-wiring harness segment.

Between C305 and the ABS computer connector are two more connectors, C203 and C101.  None of the diagrams seem to tell me where these are actually located.  If I can avoid having to remove my drivers seat and all the carpet to manually trace the wiring, that would be great.  Can anyone tell me where these other two connectors are, so I can probe them to narrow down the fault for sure?

Oh, and epic thread by the way-thank you!

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BlueGT
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« Reply #113 on: May 19, 2018, 02:07:40 PM »

C101 - I/P wiring harness to the engine wiring harness in the lower left side of the engine compartment, near the EBCM.

C203 - I/P wiring harness to the left side of the body harness. Left side of the steering column, above the left kick panel under the sound barrier.

Hope this helps.
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2001 Steel Blue Metallic GT 1 of 1956 FWD blue GTs.
Tronman
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« Reply #114 on: May 22, 2018, 12:52:03 AM »

That does help, alot.  Thank you!!
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Tronman
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« Reply #115 on: May 24, 2018, 10:39:41 PM »

So..  after replacing those front wiring connectors and harnesses, and simply unplugging and replugging all the other connectors, I started it today after fixing the heads *again* and hey..  the ABS and AWD disable indicator lights were both out!  Yaaay!!!

Then the oil was coolant orange again in about five minutes and there's a cam sensor trouble code..  but BY GOLLY THE ABS IS FIXED NOW.
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