Printer Friendly Forum Posts - Autostart, 05 Grand Prix

I got an autostart remote start as-1424 433Mhz in an 05 Pontiac Grand Prix

He has a service security soon indecator on:

CODES:
B1380 DEVICE IGNITION ACCESSORY CIRCUIT
B3055 NO TRANSPONDER MODULATION

I clear them and it will eventully come back on. I switched out the brain and interface ,PKU-GM from trilogix, but it still keeps coming back. The engineers do not have a clue this is the only car they are aware of having this issue.

It is a good customer so I am not too worried but I want to get it taken care of for him.

So any ideas let me know.

Oh and I have been doing this stuff for over 7 years so I know what I am doing. This is about the only car that I have been competely stumped on. Nothing seems to correct it.

You may want to double-check the wiring connections on the bypass/interface module. (Keep in mind that the wiring diagram itself is not always correct for the particular vehicle it's being installed on).

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The Badger

Problem is it is a 2 wire hookup. One wire goes to Ign. and other to the GWR.

The car cannot see two keys at the same time, or the message will come up on the dash.

Use the car's keysense wire, to trigger a relay, so that the bypass module does not operate when there's a key in the ignition.

Once that repair has been made, cycle the key from Off to Run 7 times---this will clear the message from the display, although the code will still be stored in history for the next 100 ignition cycles.

Ok, he came by today. It kicks on with just remote starting it. Car still starts and runs. Other times it doesnt come on.

Well I just did a 06 LaCrosse that is basicly the same and a 05 Grand Prix but using Omega remote starters with the same interfaces. It maybe just the remote start. We will find out if either of the other 2 come back with the same problem.

I did an '05 Grand Prix with the PKU-GM & a Compustar 1WAM-S and had no issues with it. Customer came in today and I asked if there was any problems and he told me nothing that he's noticed. Only thing that I can think of is make sure that the GOWR wire is sending a solid ground to the PKU-GM and that the system doesn't see two keys.

BTW: Make sure that you have enough wounds of wire for the PKU-GM for the signal to be induced into the key cylinder. What I've done in the past with other vehicles is get rid of the fat wire that comes with the PKU-modules and I use a single strand of telephone wire about 24 " long and wind it up into the key cylinder. Thi works for me 100% of the time.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

With the PKU-GM units I have all have the long single wire. Not the old fat ones. So I can loop it 4-5 times with no problems. I think he was fine for like a month or 2 possibly 3. Then he started having a problem. I never had an autostart unit, let alone 2, have an issue not being able to energize the interfaces correctly.

Well time will tell for the others. Then swap out his. Let me know if you do have an issue so I know.

Thanks.

I have the same problem in an 04 Grand Prix. Never experianced any problem for almost a year, then the service theft system came on in the info center. tried the key on and off for seven times and did not clear the message. Am going to try and test the PKU-GM and make sure it is only active in remote start. Any other ways of clearing the message, nothing on the scan tool trouble codes. This car has a crimestopper rs-900VII

To get the codes out you need to get into the BCM. You need a scan tool and enter in the vin. Find out what codes you have first. Using the scanner you can erase the codes but they will end up coming back.

When I did the 05 I used the 2nd ignition output to power the PKU-GM and the ground while running also.

I'm having these same problems with a 2005 Grand Prix. I'm using a DEI 556uw module with the key sense wire hooked up. The module is cutting off when the key is inserted, but on occasion, the customer is still getting a theft system light.

I am having the same issue. 04 grand prix. Installed a ultra u1270tl with dei 556u bpyass. Works great occassionaly service theft system soon light comes on. Keysense is hooked up. The car is returning tomorrow for another shot at the problem.. Anybody no how to correct this one, I have been over the wiring in this car quite a few times switched out brain and bypass, nothing fixed it yet.

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I talked to Mike (bypasskit.com) about this problem. He suggested taking a look at the interface again. Make sure the interface is not getting 12v constant. It should be on ignition.

Someone on here suggested running a new wire to loop around but thinner like phone line thin.

I'll add a relay to the keysense and wire the bypass off ignition today. I'll post results in a couple of days..

Thanx for the help, hopefully this fixes it = happy custy posted_image

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I added relay to keysense, tested it worked. Moved jumper to 2nd position lower signal broadcast. tested 10-11 times even left the key in when remote starting worked good. Customer called me today (unhappy) error came back. Question is this does this have to cleared now that I've made these changes, by the dealer? I read the post about cycling the ignition 7 x's. did that. Any help will be greatly appreciated? I have installed over dozen remote starts in the newer g.p's, no problems like this.

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You have a scanner? If so you should be able to get the codes out. I think they were in the BCM. You can clear it also from there. If not then try disconnecting the battery.

You hooked the interface up to GWR and ign. output from the remote start?

I don't have a scanner. I hooked red wire to ign. 2 output and ground out when running is hooked up. Dei tech called back while typing, said to tie ground out when running into keysense and to diode isolate it? Also said transponder ring was in the wrong place needs to be glued to factory ring. That is where the ring is now, always been there. I'll try disconnecting battery though. Have you heard of this advice dei gave about tieing in keysense and ground out when running??

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I have not heard of that. As a matter of fact I talked to Mike today and it came up again. He said so far everyone he has talked to has changed the wires to 12v igntion and GWR outputs from the unit. He said nobody has called him back saying it still was doing it.

In the ones I have done the wire is looped around the cylinder just behind the plastic ring about 4-6 times. I have 1 (the one so far to come back) that has an autostart in it and the 2 others have omega systems in it with pku-gm interfaces for all. The one with issues has been in for a year almost. The 2 others just within a few months.

I think next week I am going to get the one back in to take another look at it and see about changing it if I see something. Also when it is here I will be talking with Mike and trying a few things out. If you have questions call him 1-888-745-6449 tech support and ask for Mike. Tell him you were talking with Kenny about this. He will know.

Let me know if those ideas worked or not. All they are talking about is that your basicly making it think there is a key in it when there isnt. But many people here tried powering the keysense with nothing changing. Same with the Uplanders.

I had the grand prix come in last night spent some time on it. Diode isolated ground, keysense and gwr. I tried to set the sts light off for about an hour. I had the codes reset before she brought the car in, without using the remote start until i worked on it some more. This problem sure fueled up the dealership on their theory of remote starters and installers being evil. posted_image

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That's funy cause I used the 12 volt constant on the RED wire and I used the telephone line and wrapped it about 10 times and the GP hasn't had any problems with no starts or error codes. IMO, your best off trying to get more loops around the ignition cylinder to see if you can induce more of a signal around the cylinder.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

got a customer brought his car 2004 grand prix in has a viper 160 with 556 key in the box

keysense is wired up
wasn't installed by me
now one of the keys he used as well as the key in the box no longer work
took it to the dealer they were stumped
they reset the computer
couldn't reprogram either key
he has one key that still works
phoned dei tech support they said they had never seen it
dealer tells him he need to replace all the wiring harness that the remote was wired into
took the two keys to a locksmith and put them in there transponder detector
it indicated that both keys had a transponder
i told the customer seeing that he still has a key that works it either is the computer
or the keys

I remember someone telling me that once the newer keys were programmed in once they either can not be used in that car again or at all. I think they were copying what dodge was doing with thier transponder keys.

Why it locked those 2 out is alittle strange. When it locked it out what was he doing? Starting it with key only? Remote starting it while he was right there with the other key what?

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Street Dreams Car Club
93 GRAND CARAVAN SE / Astro
Team New York SS3-4 06 & SM3-4 07 DB Drag World Finals
2003 Chevy Suburban LT / 98 GTP

i know dodge keys are married to the vehicle when you program them

as in what he was doing when the vehicle quit recognising them

i don't know and neither does he

My 04 grand prix is returning. no security light but It won't remote start every time apparently something with bypass. I did the telephone wire wrap yesterday. I will switch the red back to constant, i guess. just to update. I guess I should be happy the security light is not coming on. I will update next week with changes made to this grand prix. Anybody have any ideas how to get hair to comeback as this one has balded me a little.....

Thanxs for all the help on this, it is greatly appreciated..

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