Security Lock Out and Airbag Light and Power Steering Light!!! - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 6 (permalink) Old 04-25-2016, 02:32 PM Thread Starter
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Security Lock Out and Airbag Light and Power Steering Light!!!

This is my first post in this forum. I have a 2007 cobalt ls 2.4L but today i was wiring a switch to my interior lights under my dash. i used my HVAC fuse to wire them so they would turn on when the key was turned and turned off when it wasn't turned. as i was doing this i heard my car ding and power steering came up on the DIC and service airbag. and the security lockout light was on. my car would not start. I am in a vocational school so i asked the mechanics class to run the codes on my ECU and 2 airbag codes came up a power steering code came up as well as a few others. i think its was b1725 that came up for the airbag. it said about the voltage threshold being to high or to low. i have no idea what could of caused this or what is even the problem. i can't use the key fob method of disarming the system because i have a base model with no power locks!
SOMEONE PLEASE HELP
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post #2 of 6 (permalink) Old 04-25-2016, 03:36 PM
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When doing electrical always disconnect battery. You shorted something out. Did you check all the fuses in the BCM block? Especially the ECM/TCM top left corner.


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post #3 of 6 (permalink) Old 04-26-2016, 04:37 AM Thread Starter
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I probably should have disconnected it but the spot where the airbag fuse goes and the power steering and the hvac fuse goes I used a test light and there's no power going to those 3 fuses
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post #4 of 6 (permalink) Old 04-26-2016, 04:38 AM Thread Starter
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And I have not checked the top left fuse yet
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post #5 of 6 (permalink) Old 04-26-2016, 05:41 AM
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Quote:
Originally Posted by gagemuncy98 View Post
But the spot where the airbag fuse goes and the power steering and the hvac fuse goes I used a test light and there's no power going to those 3 fuses
Then check the 2 BCM fuses under the hood.



There's also a BCM fuse in the trunk beside the battery.


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post #6 of 6 (permalink) Old 04-26-2016, 10:55 AM Thread Starter
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found the problem, blown ignition switch fuse under the hood. replaced it and all the codes and the problems went away. thanks for you help
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airbag lights , power steering problem , security light

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