2006 Chevy Express Van Passlock
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=84828
Printed Date: May 03, 2024 at 8:20 AM
Topic: 2006 Chevy Express Van Passlock
Posted By: Brad Eyben
Subject: 2006 Chevy Express Van Passlock
Date Posted: October 29, 2006 at 7:09 PM
I installing a compustar starter alarm in a 06 Express and am using a 556LW module.The van cranks and then immediatly shuts down with the security light flashing.I'm not sure what to try next, I've confirmed connections for the module, checked for a ground signal on the status input while cranking, LED's indicate that it has learned the code, resistance sense wires are correct.One thing I am assuming is that this is Passlock 2 not Passlock 1.
Thanks for any suggestions.
Brad
Replies:
Posted By: doibuy
Date Posted: October 29, 2006 at 7:34 PM
Yes it is a Passlock II system. Recheck your connections verifying the Passlock II setup.
Posted By: audiopro111
Date Posted: October 29, 2006 at 7:36 PM
i belieive that truck is actually passlock 3 , look at your key at the blade does it say pk3 on the blde if it does than u have an imobilizer key and that means you'll need an extra key and a imobilizer bypass module ,a lot of chevys and gm's are coming with chipped keys not too many with passlock lately
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AudioPro111
Posted By: Brad Eyben
Date Posted: October 29, 2006 at 7:43 PM
Thanks for the replies guys.I think I may have found the trouble...When I cut the wire for the keysense, the truck will still start. I must have the wrong wire. Am using the diagram for a 05, It says the lt. green wire at the harness. There is 2 lt. green wires and the truck starts with both of them cut.Does anybody know which wire is the keysense on a 2006?
Thanks,
Brad
Posted By: audiopro111
Date Posted: October 29, 2006 at 9:47 PM
last i checked it lt.grn but to verify with a test light it will show ground when key is in ignition and low voltage when key is out of ignition cylinder
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AudioPro111
Posted By: joescarstereo
Date Posted: October 29, 2006 at 11:29 PM
Aother easy way to see the problem is to totally take off the colum cover, techsoft cant always be correct these cars arent all the same and that would reveil the wires right to there source.
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The Car show Kings
Posted By: f150fan
Date Posted: October 30, 2006 at 11:56 AM
The passlock wire colors for that van should be yellow and tan. You should not need keysense for the 556lw to work.
Posted By: Brad Eyben
Date Posted: October 30, 2006 at 12:06 PM
I'm not sure what you mean by not needing keysense. The installation instructions clearly show the keysense wire interupted.
Anyway, I took the column shroud off and discovered 3 wires,... yellow,tan and red with white stripe. Any ideas which one puts out the resistance value I need?
Thanks,
Brad
Posted By: kgerry
Date Posted: October 30, 2006 at 12:24 PM
i have never hooked up keysense to do PL II..... PK3, yes.... PLII nope...... yellow is usually your passlock data/value wire.... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: Brad Eyben
Date Posted: October 30, 2006 at 1:09 PM
Sorry I must be using the wrong terminology, I mean the wire providing resistance info from the passlock.
I'll try the yellow, thanks.
Brad
Posted By: Brad Eyben
Date Posted: October 30, 2006 at 1:20 PM
I tried both yellow wires, the first shows 12v. The second shows 5v when the key is out and 2.8v when the key is turned on. No continuity to ground in either position.
Brad
Posted By: kgerry
Date Posted: October 30, 2006 at 4:26 PM
why are you checking for continuity to ground??? this is a passlock resistance wire..... did you hook up the 556L EXACTLY as it describes in the instructions?? perhaps you should go with something simple like a GMBP... which only needs 4 wires to be hooked up...... ------------- Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: f150fan
Date Posted: October 30, 2006 at 7:37 PM
If you pop the shroud around the steering coulumn there should be a set of three wires that run up to a plug right on top of the ignition column. The wires should be yellow,tan and I believe orange(you do not need this wire). The tan is your passlock ground and the yellow is your passlock resistance wire. You do not have to make the connections at the key cylinder but by removing the shroud you should be able to follow the wires down to where they will be easy to get to.
Posted By: Brad Eyben
Date Posted: October 30, 2006 at 9:10 PM
Thanks to everyone who helped!!!
I got it working, was easier after I realized keysense had nothing to do with Passlock resistance wire...I had a mental block.
One more minor issue if anybody wants to take a stab.
When the van is running under the compustar's control, when I insert the key it stops.
Thanks,
Brad
Posted By: Velocity Motors
Date Posted: October 30, 2006 at 10:40 PM
Brad Eyben wrote:
One more minor issue if anybody wants to take a stab.
When the van is running under the compustar's control, when I insert the key it stops.
Thanks,
Brad
Make sure that you have the key turned all the way to the ON position before stepping on the brake to take over otherwise the car will shut off. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: Brad Eyben
Date Posted: October 31, 2006 at 7:56 AM
It stops before stepping on the brake. As soon as the key enters the barrel.
Thanks,
Brad
Posted By: Velocity Motors
Date Posted: October 31, 2006 at 8:12 AM
Did you test the LIGHT GREEN wire in the ignition harness for the key sense to make sure that the wire is a (+) when at rest and (-) when key is inserted ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: Brad Eyben
Date Posted: November 01, 2006 at 12:57 PM
The compustar isn't connected to the keysense wire. Should I expect a problem here anyway or should it be connected?
It reacts exactly as if the brake was applied when the key is inserted.
Thanks for the help.
Brad
Posted By: kgerry
Date Posted: November 01, 2006 at 1:07 PM
do you make ANY kind of connection to the vehicles key sense wire? you should NOT have.......
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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
Posted By: Brad Eyben
Date Posted: November 01, 2006 at 1:16 PM
Nope, not connected to anything.
Posted By: Brad Eyben
Date Posted: November 01, 2006 at 2:37 PM
Would I be correct that the only input that would shut down the compustar including the accesories after the alarm has been disabled would be an input from the brake light?
I cut this brake input and still the unit shuts off when the key is inserted.
How about the 556LW? Does the Passlock continue to get a resistance while running or just while cranking.
Could something be cancelling the resistance output from the 556LW? Although I would think the accesories would remain on and I don't get a security light.
Thanks for any thoughts.
Brad
Posted By: Brad Eyben
Date Posted: November 01, 2006 at 3:13 PM
OK, OK, I found my mistake.
Instead of using diodes to isolate the 3 door triggers, I used inputs from door, trunk, and hood and didn't install a hood switch. For some reason when the key is inserted there must be a door input which was interpreted as a hood switch because of the way I hooked it up.
Thanks again to everyone who took the time to help out a rookie.
Brad
Posted By: kgerry
Date Posted: November 01, 2006 at 3:28 PM
the whole idea of having the hood pin installed is to prevent the unit from starting if someone is working under the hood.... dont be lazy pal... spend the 10 minutes extra it takes to properly install the hood pin switch....
-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer
Owner/Installer
Classic Car Audio
since 1979
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