passlock 1

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=22946
Printed Date: May 09, 2025 at 9:16 PM

Topic: passlock 1

Posted By: ck auto
Subject: passlock 1
Date Posted: December 16, 2003 at 8:58 PM

hi installed viper 150 xhf with 555l. the problem im having is it occassionaly trips the theft light causing car not to start. it has only happened 2 times but it is the mother in laws car. anyone have any ideas i've ruled out cold solder because it happened once last year and again tonight. kinda weird but someone once posted "if something goes wrong it''s gotta be families"

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good luck
kirk

Replies:

Posted By: JWorm
Date Posted: December 16, 2003 at 9:56 PM

Where did you connect the "ground" wire from the 555L? If you connected it to true ground you will get the occasional problem you are experiencing. It needs to go to the passlock ground reference wire next to the passlock data wire.

Posted By: brocclli13
Date Posted: December 17, 2003 at 1:11 AM

I second that thought

Posted By: Geeque
Date Posted: December 17, 2003 at 10:24 AM

Also some times the resistance changes slightly with temperature, I had the same problem before. What kind of vehicle?

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Gary Kline
MECP Master Technician

Posted By: ck auto
Date Posted: December 17, 2003 at 8:42 PM

hi the vehicle is a 1999 cavalier i can't remember where i grounded the module . it think the 555l has passlock ground and module ground not sure though

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good luck
kirk

Posted By: dfiddy
Date Posted: December 18, 2003 at 12:13 AM

if you use the passlock ground, it should eliminate it locking up, I agree.

Posted By: ck auto
Date Posted: December 18, 2003 at 2:12 AM

thanks i'll check it out tonight and advice what i found out used probably 30 of the 555l and this is the only problem probably because it was the mother in laws

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good luck
kirk

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