10-23-2023, 11:50 AM | #43 | |
2011 Camaro LT V6
Drives: 2011 Chevrolet Camaro LT (V6) Join Date: Oct 2019
Location: Maryland
Posts: 42
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Quote:
Tom
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2011 Camaro LT (V6)
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10-23-2023, 12:10 PM | #44 | |
Banned
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Ok Great best Wishes
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Seth |
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10-23-2023, 09:09 PM | #45 | |
2011 Camaro LT V6
Drives: 2011 Chevrolet Camaro LT (V6) Join Date: Oct 2019
Location: Maryland
Posts: 42
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Quote:
I've done some research and I'm going to wire up a little harness with some spade terminals I have that will fit. 3 positive wires to the +12V terminals (with a fuse) and 3 ground wires to the ground terminals. Power it up and see if it blows the fuse. If it blows, it's 100% the ECM. At this point, I hope it is.
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2011 Camaro LT (V6)
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10-23-2023, 11:08 PM | #46 | |
Banned
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ECM Burnt
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I am glad you realized that the ECM is EZ to remove. I want you to perform a another type of test for me before proceeding any further ok? Remove the ECM entirely and place it on the passenger side floor board carpet to keep it safe No worries it is self contained and hold no risk of shock or static worries. Next I want you to see if you have the Master Key Original handy. If not this may not work. I want you to remember how much Gas you had in the tank before this mess started. With that in mind and with battery installed and ecm out Please insert the key and see if the gas reads what it should have. If it does great! Then with the key dongle I want you to proceed with a Auto Start sequence. Yea I know it wont work with ECM removed but I am trying to see the status of BCM so watch the dash lights and interior lights during the test. If the BCM is bad those light will go crazy for about 3 seconds. If it still good test the logic on the radio please and tell me if it remembers your cell wifi and or your favorite channels please. please do this with key on! If the BCM is still data ready and viable all these should still be there. Then give the dongle a standard test, with drivers side window open and door's closed I want you to see if all other functions still work. This data is stored in the BCM for this. If all appears normal Great the BCM is still good and not suspect. If any of these fail try it with the same test with ECM installed. Please advise upon completion . Total time is 5-7 minutes to accomplish this no biggie. Now take your Probe light (fuse tester probe) Attach the clip to adjacent fender bolts area for a good ground ok and with ECM OUT and key on I want you to start testing relays only for now. Two of them the larger Black ones are also used to regulate and direct DC Current to other circuits. Concentrate on the K series Start with K26 and work your way up ending in K632. I know if fuses are blow how can I check relays? We will isolate the bad circuit by this and see if the J class fuses are also bad and wich ones. most common is the ecm fuse has popped already and is bad. With the fuse replaced should be a 15 amp fuse located in the 20 area. Please consult your fuse Box cover inside for diagram of all. Yes I know all of this is common but it needs to be done first The ecm fuse should stay good as long as the ecm is removed. If you doubt your tester is working good then at the 12 v source wire touch it and test your probe. If it does not light up, check the ground again and use a body ground not the hood hydro shocks ok . I will check your status after work tomorrow. Gotta Bounce for now Seth |
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10-27-2023, 11:47 AM | #47 |
2011 Camaro LT V6
Drives: 2011 Chevrolet Camaro LT (V6) Join Date: Oct 2019
Location: Maryland
Posts: 42
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FINALLY, Progress!!
Fist, Seth thanks for the info. I did go out and test the BCM as you mentioned. Everything was fine that I could think to test, except the fuel gauge showed empty (I know there is about 5/8 of a tank remaining). But this was an original symptom of the blown fuse (and therefore no power to the ECM). The fuel gauge must be powered by something from the ECM, never did dive into that further. Ok, the moment I've been waiting for. As I mentioned previously I removed the ECM and took it to the workbench. I created a small power wiring harness with three wires to apply +12V power to the power pins (3, 5, 6) and three wires to apply ground to the ground pins (1, 2, 4) in the X2 ECM connector. Small crimp spade terminals that I had to pry open just a bit worked perfectly on the ECM terminals. I added an inline fuse holder and a 15A fuse. Sure enough the second I touched the positive wire to the red terminal of the 12V battery, I heard a faint click in the ECM and then the fuse promptly blew! I tried it again for good measure; same result. So now I have definitively proven the ECM is responsible for the short-to-ground within it. I had already proven the wiring harness for these 3 positive PNK/BLK wires from the load side of the fuse to the ECM pins was good with no shorts. I have the ECM boxed up and ready to ship today to Module Experts. They'll do a lifetime warranty repair with a three business day turnaround. With my shipping cost to them included, it's just a bit under $200 total. I'm sure I'll still be anxiety-ridden when I plug it back into the car, but I feel pretty confident I've found the problem...one of the lucky (unlucky?) ones with an actual ECM problem! Trust the wiring diagram. It showed me the complete circuit I was dealing with. Thanks everyone for the tips, help and suggestions, I'll update as soon as I get the ECM back and see what happens. Tom (And in the pic below, the 3 ground wires are indeed mostly black, though it doesn't appear to look that way in this photo! They were a red/black wire combo that I separated).
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2011 Camaro LT (V6)
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10-27-2023, 05:55 PM | #48 |
Drives: 2013 1ss Join Date: Jul 2012
Location: WI.
Posts: 545
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Sorry to hear all u are going through but man this is some amazing problem solving u are doing.
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11-07-2023, 07:05 PM | #49 | ||
2011 Camaro LT V6
Drives: 2011 Chevrolet Camaro LT (V6) Join Date: Oct 2019
Location: Maryland
Posts: 42
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Quote:
I sent the unit into Module Experts. They confirmed my diagnosis which was fantastic, but also met with some unfortunate news: Quote:
Just ordered one from Flagship One for $369 and hopefully will receive it early next week. I'll let you know how it goes! Tom
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2011 Camaro LT (V6)
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11-07-2023, 07:38 PM | #50 |
Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,280
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The one time I ordered from flagship one took forever to receive it. I basically had to threaten to cancel the order before they shipped it. It was a fairy rare ECM so hopefully yours will be quicker.
Mine did work as it was supposed to once I got it. |
11-08-2023, 01:01 AM | #51 |
Drives: 15SS Camaro Join Date: Dec 2020
Location: US
Posts: 351
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So a new ecm solved the no start?
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11-16-2023, 06:52 PM | #52 | |
Life's just a Ride
Drives: 2011 Synergy Camaro 2SS/RS LS3 Join Date: Oct 2013
Location: Columbia SC
Posts: 864
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Quote:
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11-16-2023, 08:20 PM | #53 |
Life's just a Ride
Drives: 2011 Synergy Camaro 2SS/RS LS3 Join Date: Oct 2013
Location: Columbia SC
Posts: 864
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11-16-2023, 08:30 PM | #54 | |
EMT NY
Drives: 2011 Chevy Camaro SS White Join Date: Nov 2023
Location: Long Island NY
Posts: 31
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Nice ride!
Quote:
Sean |
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11-16-2023, 08:34 PM | #55 |
Life's just a Ride
Drives: 2011 Synergy Camaro 2SS/RS LS3 Join Date: Oct 2013
Location: Columbia SC
Posts: 864
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Nahhh don't do it Bro
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11-17-2023, 04:34 AM | #56 | |
Drives: Dodge Join Date: Nov 2023
Location: Albania
Posts: 1
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