Passlock II Bypass Help

V.M. gave me a link ( https://www.the12volt.com/downloads/file.asp?ID=250) to a Passlock 11 bypass relay method. I have a couple of questions/confirmations about it though.

1)Will this diagram work on a 1999 Tahoe? If so, then I have the following questions –

The drawing shows what appears to be a resistor coming of the left hand relays 86 pin "To ground when running from car starter (-)". Is this a resistor, if not what is it? Does this wire just go to any ground, or is there a special starter ground?

Also just to confirm, I place my matched resistor(s) on the ORANGE / black wire where it says "resistor or trimpot" right? And when adding up resistors, they go end to end right (series)?

Thanks,

HEY ,  FORGET THE RESISTORS, AND RELAYS.....  JUST GO AND BUY A DEI PASSLOCK 1AND2 BYPASS FROM YOUR LOCAL DEI DEALER.

  MODEL:  555L  PROBLEM SOLVED. ITS ALSO EASY TO INSTALL

I already bought one by bypass module, but it wasnt a DEI.  Do you remember how much the DEI's module costs?  Last night I set up the above mentioned relays, and now am waiting to here back on my "ground while starting" wire.

Steve

My remote starter ( http://www.commandoalarms.com/comboinstall.html) does not have a unique wire for ground while remote starting.  Will this relay system work for me?  And if so, what diode do I use?  I found the DEI 555L for $30, so if this wont work, I'll just order that.

Steve

Steve,

You say your remote starter doesn't have the correct output?  What you're looking for is a wire that outputs a ground whenever the remote starter is active.....not just while cranking, but the WHOLE time the remote start is turned on.  Most any decent, modern remote start should have such a wire.

At my job, we use Audiovox's AS-GM4, which is just as easy to use as the DEI 555L.  The AS-GM4 automatically "learns" the car's R-code just like the 555L, and they seem to be reliable.  Just another option for you.

I can barely read that Passlock bypass diagram you link to, but it looks to be about right.  Do you know how to measure the car's R-code with a multimeter?  If not, I'll tell you.

You can also permanently bypass Passlock forever by using just plain resistors, no relays or anything else.  One large downside to this is that the car is easier to steal.  More importantly, though, if you use resistors that are slightly off, the car will not start at all, and you'll be stuck.  A bypass module (or the relay setup) only functions during remote start....meaning that if there's a problem, you can still start the car with your key and get to work.

You also asked if resistors should be placed in series (strung end-to-end) or in parallel (all spliced alongside one another).  Well, that depends.  I'll explain.

Let's say you have a handful of 100-ohm resistors, for discussion's sake.  And remember that more ohms=more resistance.  If you were to put two of those resistors in parallel, you'd end up at 50 ohms.  If you put two of them in series, you'd have 200 ohms. 

 Now, let's say you want 150 ohms; how do you do that?  Easy.  Place two of the resistors in parallel, which is 50 ohms.  Place another resistor in SERIES with that pair.  50 ohms (the first pair, twisted together) + 100 ohms (the one single one placed in series)= 150 ohms total.

Based on what size resistors you have on hand, and what resistance your car requires, will influence your decision of whether to put the resistors in parallel, series, or some combination of both.  You can engineer such a setup either in your head or on paper, but in any event, rig them up in a temporary fashion and verify the reading with your meter, before making a permanent installation.

I had some great sucess today!!!  An a earlier thread I started with my problems, Chris suggested that I use the "Stop 'N Go" feature to trouble test my remote start.  So after trying this feature, and having it not work, I when back to the drawing board.  I checked all connections, and everything seemed to be fine.  I had not hooked up the orange accessory wire as I didnt care about AC or heater.  Well, I figured, what the heck, its the only wire not hooked up, so why not.  Well, this was the trick.  I guess this wire does MUCH more then just AC and heat.  I was able to engage the stop n go, and pull the key out while the car was still running.

I then set the resistance on my passkey ii module, and it remote started twice, then no more.  I tested the resistance again, and it had changed from 590 to 1380.  I reset the bypass but it still want autostart.  Is there any hope with this module, or should I just go ahead and order a "smarter" module?

Also Chris mentioned bypassing the passkey, can some one tell me where in line I would place the resistors to do this?

Steve

Steve 

We sell a learning bypass module that will learn the changing resistances of the Passlock II systems. We have installed lots of these and have not had a single return from any of our customers. They are $ 45.00 for these but will learn your resistance even as it changes with heat and cold. Let me know if you want more information on this by emailing us at velocity@valleycable.com

Holly crap you guys are talking about passlock 1 and 2 and passkey, lets first start by saying that this vehicle has got passlock 2 and yes the orange wire that you didn't energize is very important in the remote start sequence, passlock actually energizes at the acc position of start, you're best bet is to do what everyone else says to do and use the most reliable means of integrating into the passlock system, via dei'5 555l passlock module, what happens to just plain resistors when they are sublect to extreme hot or cold temp conditions ????  the resistance value changes and it may change enough to seriously change the rcode value on the passlock system giving you a no start situation.

the simplest way to defeat passlock being passlock 1 or 2 is while the vehicle is running cut the rcode wire this now keeps the last known resistance value stored in the ecm of the vehicle  BUT the security light will always be on, and you could end up with other problems, just do it the correct way the first time and use a proper passlock module, if you make the passlock system go into complete failure you're now dealing with an expensive dealer bill to repair it.

Do it right or dont do it at all

Terry

I agree with Terry here; get the proper, self-learning module.

The shop I work at used to do a lot of them by permanently bypassing the Passlock with just plain resistors.  Whenever the weather changes, the cars come back, often on the back of a tow truck.  Just had to fix a 2000 Monte Carlo for this yesterday.

Steve, do one of three things.  1.  Go to your nearest store and pick up a DEI 555L.  2.  E-mail me and I'll sell you an Audiovox AS-GM4.  3.  Order Jeff's self-learning piece.  Any of those three will work for you.

Also, just a curious question---if you don't care about operating the car's climate controls, why on earth would you be installing a remote start?