2001 Freightliner Truck, Still Runs When Key Shut Off
Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=147217
Printed Date: April 19, 2024 at 5:30 PM
Topic: 2001 Freightliner Truck, Still Runs When Key Shut Off
Posted By: bat9905
Subject: 2001 Freightliner Truck, Still Runs When Key Shut Off
Date Posted: January 13, 2022 at 10:09 PM
Hi have an issue and need a little help. I have an 01 freightliner with a simple 4 wire ignition switch. Constant 12 volt, acc, starter (push button) and ign have 12 volt proper key positions but vehicle still runs when key is shut off. Metering ignition while key is on 14 volts is present. Shut key off and it drops to 12. It should drop to 0 of course. I suspect ecm issue or something related because when I pull ecm fuse it shuts off. Any solutions would be greatly appreciated. Could a diode fix this temporarily?
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bat9905
Replies:
Posted By: i am an idiot
Date Posted: January 14, 2022 at 7:31 AM
Any recently installed aftermarket equipment?
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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB
Posted By: bat9905
Date Posted: January 14, 2022 at 6:12 PM
Just a pioneer head unit
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bat9905
Posted By: i am an idiot
Date Posted: January 14, 2022 at 7:50 PM
Does the radio turn off when you turn the key off?
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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB
Posted By: bat9905
Date Posted: January 15, 2022 at 11:54 AM
Yes it shuts off acc wire at the switch is off when key is off.
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bat9905
Posted By: bat9905
Date Posted: January 19, 2022 at 9:26 PM
Ignition relay ended up being bad and back feeding to switch
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bat9905
Posted By: i am an idiot
Date Posted: January 19, 2022 at 9:45 PM
Thanks for letting us know what it was. It may help somebody else with the same problem down the road.
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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB
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