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Old 05-04-2016, 03:37 PM   #1
Dapa
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Dizzy 2004 Saturn vue weak door locks

Hello guys, I'm having some issues with the door locks on my 2004 Saturn vue.
It seems as if they have lost some power, when I first use them, I can hear all of them trying to work, some times they do work, sometimes they work like half way, and when I try to use them consecutively, each time they seem to loose more and more power until all I can can hear is clicking from the relays. After a few minutes I try them again and they do the same thing. Can anyone help me please.
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Old 05-04-2016, 07:21 PM   #2
billysvue
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Default Re: 2004 Saturn vue weak door locks

Do you have a charged battery? What's the voltage?
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Old 05-04-2016, 11:14 PM   #3
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Default Re: 2004 Saturn vue weak door locks

Quote:
Originally Posted by billysvue View Post
Do you have a charged battery? What's the voltage?
Depleted battery is prime item that'd affect door latch solenoid speed - other possibilities are: (1) all solenoids are showing identical signs of wear (they're probably 11 - 12 years old), (2) a marginal connection in the +12 path, or (3) a marginal ground connection at G301 (near door side of driver seat).

I've attached two schematics if you're into that sort of thing. The first one shows path from battery positive post through various fuses until you arrive at door relays and solenoids.

The second shows door relays (and solenoids) are switched by BCM for lock and unlock and BCM does the switching based on your door control switches or in auto mode when shifting from neutral or when responding to remote keyless entry.

You can see a single solenoid does lock or unlock function based on polarity of voltage sent by door relays.

You didn't mention but I'd assume the solenoids slow down for both lock and unlock switching.
Attached Images
File Type: jpg Vue Dr Lock B+.jpg (88.4 KB, 7 views)
File Type: jpg Vue Dr Lock.jpg (104.4 KB, 12 views)
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