DEI 555L problems
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=7692
Printed Date: June 30, 2025 at 4:12 AM
Topic: DEI 555L problems
Posted By: svkkendall
Subject: DEI 555L problems
Date Posted: January 05, 2003 at 5:02 PM
I installed a 555L and it will only work if the car is warm. If it is cold no go?
Replies:
Posted By: secureauto
Date Posted: January 05, 2003 at 6:33 PM
What kind of car is it? Is it carburated or fuel injected?
Posted By: auex
Date Posted: January 05, 2003 at 9:11 PM
You are talking about the immobilizer defeat correct? Or are you talking about the Remote Start? If you are talking about the immobilizer defeat then you should check your ground ( it should be hooked to the sensors ground not grounded to the chassis). ------------- Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
Posted By: svkkendall
Date Posted: January 06, 2003 at 3:56 AM
The car is a 2002 impala and it is grounded to remote start sensor - output.
Posted By: themagicone
Date Posted: January 06, 2003 at 9:06 AM
I would say its a ground. I wouldn't ground it to an output of the remote start, it needs to see the same ground the BCM sees. You can ethier run it to a good ground or hook it up to one of the three wires in the passlock harness - I think its yellow, BLACK/ orange and black. You can use the black, but look in the manual for it to be sure. Lαe=
Posted By: svkkendall
Date Posted: January 06, 2003 at 5:30 PM
My power source for the 555 is constant so if I grounded without the remote starter - output would it damage the 555 to be constantly powered? Or do I add a relay?
Posted By: themagicone
Date Posted: January 06, 2003 at 6:51 PM
theres two wires on the 555l, passlock ground and and a blue black wire - the blue black wire should go to the ground when running of the remote start, the other ethier to the good ground or the passlock wiring. Its relay based, when it senses volatge on the pink ing input wire and a ground on the blue black it will send out the code.
Posted By: svkkendall
Date Posted: January 07, 2003 at 4:00 AM
That is how I have it connected, blue black to - starter output and black to the passlock ground output. I know resistance changes with temp. Would a bad connection also make this happen?
Posted By: themagicone
Date Posted: January 07, 2003 at 8:34 AM
It would. I just did a 03 Tahoe and The connections were off just by a little, and it started screwing it up. I'd say sodder your wires and make sure your ground is tight and secure. do you have your red wire going to 12volts constant? Other that i dont know.... I've done so many of these i can do ti behind my back.
Posted By: svkkendall
Date Posted: January 18, 2003 at 1:26 PM
I just soddered the connections and it still only works when the car is warm. Could the module be bad. Any other sugestions?
Posted By: auex
Date Posted: January 18, 2003 at 3:14 PM
Did you go back through programming? If not then disconnect the unit for 30 seconds, then plug it back in and then reprogram the unit by starting the car and letting it run for about 5 seconds. If you did then the unit may have some bad solder joints and you should exchange it. Also more specifically the ground should go to the passlock ground wire in the ignition harness, this wire is listed in the installation manual for the 555L ( I think it is a small gauge black wire). ------------- Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.
I've been sick lately, sorry I won't be on much.
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