"PROBLEM SOLVED" after days of trouble. SPRAYED CRC "Electronic Spray" ($3 at Walmart) into my "aging ignition." (Electronic spray will not hurt the "dusty old" ignition). Unbelievable! "1998" Chevy Cavalier 2.2L engine. Chevy wanted $300 for a reset. Had it towed several times and local mechanics tried everything. Found this $3 CRC spray solution in a forum. "Security light" kept coming on. Stalled in traffic. Had to wait to start again. Looked at all the "bypass solutions" and Amazon gadgets too. When it works for you remember to share and pay-it-forward.
Ive been employed as an auto technician for 17 years now. Paul could upload a video on checking his tire pressure and id still watch it. Dont care what its about, reg channel or premium, thankful for all of it.
I watched this video for the first time last week and what do I get in today? A vehicle that the customer replaced the battery, starter and electrical portion of the ignition switch and it still wouldn't start. First thing I check for is flashing security light, it's there. Used this bypass method and within 10 minutes had the car running. Thanks for another great video, Paul
In this video Dr. Scanner Danner shows us how to perform an automotive anti-theft vasectomy. My '93 Corvette shares the same anti-theft anatomy as the Caddy. Well done vid again!
Great video as usual Paul. I've installed a number of the various kinds of Intoxi-Lock systems that are court ordered with some DUI violations. They interrupt the start circuit and only enable it when the unit detects a passed test from the handheld unit that the driver blows into to test for alcohol. It looked like the vehicle had one of those systems that had since been removed.
Thanks man! It doesn't feel like it at times. So much great competition now these days, don't you agree? (you being one of them ;-)) I really appreciate your comment and support and wish you and your channel all the best as well. I think we all bring a unique way of doing things and it makes our subscribers that much better. Have a blessed day my friend.
FordTechMakuloco ......are you guys serious? I watch and follow both of you. I used to teach jet engine/acft engine theory troubleshooting and repair and yet these are the jobs I wished I was doing.
I agree on the competition there are many greats that have come on board recently and its even tougher on social media everyone is posting everyday sometimes more. Just a few months ago no one really put much emphasis on it. I wish all the great techs on youtube could get together for some event and diagnose something or at least get a picture together this is truly history in the making and we are all part of it!
As a locksmith I have been working on these systems for years. Several suggestions. First you have to remember that there is a penalty delay after any failed start attempt. (3-4minutes) next, there is a stand alone module that verifies the correct pellet value. This module seldom fails, most failures are in the wires bet ween the ignition cylinder and the connector undre the dash. Easiest test on the wire integrity is to unplug the connector and measure the ohms between the 2 pins with the white wires in the orange cable. Chek with no key in, (should read open) then just insert the key (should read about the same as the measured resistance of the pellet on the key. Another common issue is dirty contacts in the ignition cylinder. This will read as a lot higher resistance. With this test, you can narrow down things real quick.
Every time you have to make a decision to film or not, just think of the smile on my face when that car started! I love fixes that don't involve changing parts. Just plain cool. Thanks for the explanation at the end, invaluable information Paul.
Good video Paul. I love seeing the old cars too. Working on them is going to be a lost art if nobody shows them. The way this circuit works is also very similar to older steering wheel controls and cruise control switches. There is a 5 volt and a signal return line hooked to the BCM or cluster, going through the clock spring, and each button has its own resistor value. A cheap way to have many buttons only use 2 wires.
Great video Danner! I did the same thing to a 90's Buick years back but I wasn't nearly as quick as figuring it out as you were! I didn't think to measure the key's resistance. I bought a hand full of resistors and tried them until it started.
I hate to admit that i use to install aftermarket equipment. I tried to do the best/cleanest job I could..BUT I've seen too many butched up installs. when I went into full time auto repair I cursed the aftermarket guys without mercy.thanks for the video Paul. brought back alot of memories (some bad)..cheers
love the video. as a automotive student who just graduated, im deffinantly considering supporting your priemium channel in the future. thanks for the all the free informative videos
I have a similar problem on my son’s 98 camaro. Whether this is the fix I am looking for or not it saved me a ton of time in troubleshooting and figuring out what wires do what. Thanks for showing this!
Unfortunately, not my problem. Still searching for a solution. Was just told by the person I bought it from that someone “borrowed” some fuses out of it. SMH!
I own a 1998 Cadillac El Dorado and I am having this very same issue. I even been looking for someone doing it on my car for the past week thank you sir.
I'm glad that I found this video again. I'm going to be looking at a friend's 1994 Olds Cutlass Supreme that is I believe a no crank, no start. They inherited it from a family member and don't know much about it. I will verify it's not anything else in the starting system before seeing if the VATS system is the cause. I don't have access to wiring diagrams unfortunately so that is going to be a hinderance on diagnosing anything.
@@ScannerDanner Thank you. I guess I should have clarified in that I'm not sure if the friend will pay for service information. I use Alldata for my own vehicles but Mitchell also seems to be very good and I may switch to it since the yearly rates are cheaper than Alldata.
I am a remote start tech..I approve of this fix. You can also do it on the aging passlock 2 system. Cut the yellow wire, measure the key side to the passlock ground, and then match it from the car side of yellow to passlock ground. :) You may get errors in the immobilizer system but it will always start. I usually solder in a new wire and tape a wire tie around it as a splint to keep it more stable under the dash!
Yes that is correct you can use any of the preset values. Look on ebay they sell specific kits of 10 resistors for GM vats/passlock. I forgot to mention using my method the engine must be running when the yellow wire is cut. It also has a default strategy of if the wire is cut when the engine is running it will go into failsafe and ignore passlock but the light will stay on to let you know the system needs serviced.
I dealt with a similar issue on my SRT8 Jeep a few weeks ago. The hood sensor/switch that prevents the remote start from working when the hood is open, utilized a 1k ohm resistor. I used shrink tube on each leg of the resistor and then put a 3rd piece of marine grade shrink tube over the entire thing. That thing should never require servicing again and now I can remote start with my hood up since I bypassed the switch/sensor completely!
Great vid man! I imagine the security keys have saved a few cars but I have despised them since the first time I got a key made that wouldn't crank my truck. I called Ford to buy a spare and it was like 300 bucks back then. How could I have possibly been happy with that? Its probably parked plenty a car too for a while. I bet folks have given up and sold cars over security key issue.
Just did two remote starts a couple months ago with this system. Still good info from a reputable source. A remote start bypasses this problem also, if you happen to be in the market for one when this happens.
Regarding the Eldorado, I find them a very comfortable and reliable ride, however, because it has some age to it you dismiss it. If maintained properly they will give one good service and are much less complicated compared to the new junk they sell today.. Nice job on the diagnosis.
I lost the key to my 97 Lumina went to the dealer gave him the VIN number charge me $50 for a new key. key was cut right so it turned the cylinder car would start for Split Second then cut off. had the wrong pallet in there and they would not refund my money. so I got a volume control knob Off an old CB radio began with it turned all the way down try to start it and incrementally turned the knob up and it started so I measured the resistance value of the volume control knob at the position the car would start at. went down to Radio Shack matched up with the resistor of the proper value and was back in business. come to find out GM Vats had like 15 different possible resistor pellets during those years. shade tree mechanic way of doing it if you don't possess all the proper tools like scannerdanner has and you did not have the key in the first place to measure the pellet
I got the same system in my trans am. Just subbed and watched a no spark video. It will help me later with testing my no spark issue. Really enjoy your vids man 👍up ✌️
That circuit is a simple resistive divider using the voltage divider equation you can determine the value of the resistor inside the PCM. R1 = R2 * (Vin / Vout) - 1 Where R1 is the resistor inside the PCM, R2 is the resistor in the key (rounded to the nearest standard 5% resistor value), Vin is the voltage measured with the key removed (the voltage reference), and Vout is the voltage measured with the key inserted. R1 = 1,100 * (5 / 1.6) - 1 R1 = 2,337 kilo ohms The nearest 5% tolerance standard resistor value (E24 value) to 2,337 kilo ohms is 2,400 K so that's what you would find inside the PCM. When selecting a resistor after measuring the key it helps if you have a list of the EIA E24 standard resistor values. It lists all of the standard resistors in the 5% tolerance range so you can see what standard value is closest to what you measured. www.ohmslawcalculator.com/e24-resistor-sizes
there are lots of handy resistor apps available for almost any smart phone. good video. done many of these myself. I usually scavenge potentiometers from old electronics and dial in what I need.
On that 97 caddy where you wired 2 3 thousand resisters in did you put both resistors on one side white or one on each white wire it was hard to see. I thought each white wire would fasten to each end of the resistors. Please help....Thanks a bunch.
Thanks a bunch man i'am an old dude can't afford another car right now so got to keep baby running. One more thing my key reads 3.7 omm so you said that 1.3 omm was 13.00 so what would 3.7 be ? Really appreciate your help you're a great person.
Paul , i think this video is got me on the right track , i got a 2000 3500 utility box bucket truck from a local cable company it had a tracker in it , they pulled it when the boon lines blew out , it still ran , but it has wiring gremlins , this darn truck has been to every shop in town , they all got 300 dollars , but its still blows the prnd after it warms up , about 3 to 8 miles ..ive been fighting this too long , would you like a paid trip to florida ? Ive had it with this problem ..i got boats too ..hogs , deer oceola turkey's ,and one rustic as hell camp site ..if any of that sweetens the deal ..
Great video!!..You, are the Source!!..Maybe too much for the average repair guy, but I enjoyed your detailed description, and was able to follow you on it!!!..I will use this if it fixes my problem...Thanks for the mini-electronics course!!!...Great!!!
This easy fix addresses the problem with the resistance reading coming from the key cylinder or key pellet being wrong (broke wire, dirty pellet) but what if the problem is farther down the VATS line? I have a 2000 Chevy Lumina and the security light is constantly on but the car still starts. Don't know if you see this much but just putting a correct resistor in doesn't solve the issue of the security light staying on. I"m thinking maybe a failing theft deterrent module?
Hey Mister Danner you're really good technician thank you for all your help, god bless you. Im a spanishs speaker and just to let you know you are really famous on our community thanks for your help.
Very interesting and like how you think things through to fix a problem. I would like to know if there is an affordable scan tool that a diy person can afford, I am a retired person who has experience working on most types of vehicles and try to do repairs for people who cannot afford the dealership fees and some shops, but a scan tool would make life a little easier. Keep up the good work.
Robert, it really depends on the type of work you want to do and what market you are in. There really isn't one particular tool I can recommend. BUT, I do recommend that you get a scan tool that offers bi-directional controls, which will put you in the $1000 range at a minimum.
Easy way to solder a resistor is to cut the two wires to different lengths and solder the two ends so the resistor lies along the length of the wire then slip heat shrink over the top.
That's a vary common issue and repair on GM vehicles with VATS. Eldorado, DeVille, Seville, Corvette and any GM vehicle with the pellet in the key. Some people prefer to replace the ignition switch because they want to keep the car as original as possible even though it costs more to replace the switch instead of using a resistor. Many of those people are also 60+ years old and think putting in a resistor will harm the car even though we explain doing so will not.
Haha, yup! Such a common problem that most of the GM cars from that era already have this done! Not long after this Passkey system came out, thieves started carrying around resister packs and could just hotwire the thing in a heartbeat.
I have a 2005 Tahoe. Haven't used a key in it for 5.years I guess the tumblers were stuck. I can put the keys in to it and works fine untill now.i changed the Fuel pump GM pump because I would have to beat on it every three months it's not starting I have three codes that came up today p1626 u126 u1300 fuel pressure is 52+ at Crank wants to start just wondering if you ever came across this before if that's cool I really like your channel I might get your premium subscription anyhow I'm a Old school mechanic trying to get up on the computer stuff it's really interesting. GOD BLESS YOU AND YOUR FAMILY
Not sure offhand my friend. I have a forum on my website though where we can help you further and it is free to join www.scannerdanner.com Hope to see you there
Thank you, informative. Now then, how is the hot wire identified? I have a blue wire from the PCM , and it's designated "antitheft". Problem: I removed the entire drive, cut the PCM wire, so I have the basic engine sensors and the PCM to manage fuel. The wiring is 90% finished. I'm fairly certain it is correct. The fuel pump feed comes on for 2seconds than shuts off, but the engine will continue to crank. Which is correct, although the crankshaft sensor is still sending a signal, as I have an led in parallel. What am I missing? I don't have any potential feeding my ICS, and my OIL LEVEL sensor is still disconnected, and I don't know if I need the oil level monitor to complete. Help
Scanner Danner great video. I have a question for you and hopefully you can help me out. I bought a 93 fleetwood which someone already bypassed the VAT system. Suddenly one day the car wouldn't start. I continually kept charging the battery but every time I tried firing no it up nothing. So I called my friend in the valley and he told me it was the VAT system. So this morning I went underneath the dashboard and cut out the resisters they had soldered. When trying to measure the resisters from end to end I couldn't get NO reading. But when I measured them separately I got reading; 1.50, 1.50 and .022. And again when I measured them from end to end...no reading. The two wires under the dashboard are exactly what you said purple/white stripe and white/black stripe. Can this be my problem with me ignition? Thank you so much and keep up the great work. Going to subscribe right now. Your boy Eric from So.Cal.
My camaro uses the same ignition system so Ill prob end up doing this one day lol Those wire strippers look real good if you're in a large area. Thanks for the vid Paul, - Matt
Paul, I have an issue with a Honda Odyssey 2003, I have car key that was working perfectly, I remove the battery and reconnect it, and after this the antitheft don'ts recognize the same key and won't start the engine. Hope you still read commentaries, the last one here is from 4 years ago.
I see them all Luis, but let's move this to my forum okay? It's free to join www.scannerdanner.com Too difficult to offer back and forth messages here for me. When you post, be sure to include as much info as possible including current trouble codes if that is possible for you to read them. Thanks! Hope to see you there
Paul, or anyone else. What type of torch/soldering iron was that? Did it have a flame, flameless, electric? Great video, thanks for sharing information.
Hey Paul. I love your videos. I constantly learn something new. I just bought a used verus pro from my snapon dealer and was wondering if your digital book can be viewed on it? and also if it can be viewed on multiple devices ie; my cell phone, laptop, etc.I'm sure it can but just want to make sure. keep making awesome videos brother. God bless... ps when in doubt, FILM IT!!!
Hey ScannerDanner this is your friend again Eric from So. Cal. I wrote you a month ago about my 93 Cadillac Fleetwood with battery and ignition issues. I found the right resistor for the ignition and the car fired right up. The situation I'm having now is like the next day I try to fire it up and it won't start, but the security light still goes off so I know it's still bypassed. So I have to disconnect the battery cables and touch them together to short out the computer to erase and codes that might be inside. Connect the cables back to the battery and it starts again. My question is does the computer has to be re-learned because I did change computers (BCM) and if so how do I go about doing that? Thank you so much...Your friend Eric from So.Cal.
So a guy I worked with at Chevy dealer had a Corvette that had somehow learned a different resistance than it's Pill on the key due to some corrosion somewhere. They apparently had no way to find out what that value was and he was trying to find ways to bypass it. If he had hooked in a variable resistor into the circuit and turned it, assuming there is a PID for VATS to say YES this is the right resistance. Would that have worked to figure out what resistor was needed to bypass it?
I haven't'watched all this video yet.....I might need to do a little more digging, but in the 4th gen F-body world(93-02 Camaro/Firebird), I think the BCM(Body Control Module) "learns" the resistor value. I don''t recall it going through the instrumentation cluster. I was surprised when you said instrument cluster as I was expecting you to say BCM instead. The BCM reads the resistor value, if correct, it then enables theft deterrent relay to allow the starter to work. As I post this schematic, I may find myself wrong as this says "Theft Deterrent Module". This is for a '95, so they may have integrated it into the BCM for '96 and up(I have a ''96 Z28). Edit: Checked my '96 service manual and the BCM does control VATS starting in this year model. shbox.com/1/pass_key.jpg Interesting how varied the implementation of VATS is across models. I wouldn't sweat worrying about videoing about VATS. The bypass info has been out for a looooong time(at least it has in the F-body world). =)
There a company called New Rockies. They sell aftermarket modules for Gm and Gm only for all security Full bypass. Some security module's send a pulse width signal to the pcm to keep the injectors pulsing. This module produces the signal the pcm needs. Just installed 1 on a 93 Deville. Rolling on.
Paul i have been watching several of you videos and you appear to use the "Vantage" frequently. I have the opportunity to purchase one of them but I was curious if I should wait and hold out for a "Vantage Pro" to come along and this would give me a two channel scope. Or am I way off base with my thinking. I use a Maxsys for my main scanner.
Lol all come on PAUL it's not that hard to change out the ignition lock cylinder have some fun. Then you could've taught them how that is done as well. I still enjoyed the video. You met me at Eric's one year. Don't know if you remember me.
Able Lock with these, the lock cylinder comes with a standard steel key to fit the cylinder, you have to take your old key if you have it, or have the resistance value of the pellet, then go to a locksmith or shop that has the pellet blanks (gm used a limited number to cut down on having to stock so many different ones) then have the correct pellet key cut from the steel master. then its just replacing the cylinder. most of the ones I used to do failed because the two metal contacts in the cylinder wore out. with the keys being $25 and up, I keep a assortment of resistors on hand and just solder the correct value across the connector at that plug under the dash.
Great vid thank you for making everything so clear. Im just wiring in the spare key as the resistor for my 95 Eldorado. I suppose if it does work I will later wire in a resistor...
at least i want you to know that i do fix all my friends and my neighbors cars when they breakdown for free and i keep telling them about you and we all thank you i dont have a master car to buy it on line unfortunately
1085 to 1195 ohms is the acceptable range for this particular key of 1130 Ohms, key blank number 5. Replacing the lock mechanism is easy, including snaking in the orange covered wire. I have to replace the electrical switch 9n my car, after it chose to let the smoke out this morning. My Security light is perfectly happy with my key, but I've still got no crank. The last thing that happened before me turning the key off, was the starter engaged on the running engine. At the VATS relay, I have an intermittent battery voltage, and the relay buzzes. Relay seems fine, but mechanical pressure on the key affects the intermittent power condition at the relay. I think my electrical portion of the key is worn out, and it's an air bag car. I'm looking for a video on how hard it is to replace the actual switch the lock cylinder manipulates. Can't find anything melted under the dash, but something surely is. It's a 1990 IROC, air bag and pass key 1. I'd like it all to work right, but......
I have a 99 silverado anti theft went on did a relearn processes had no problems until 2 weeks ago. Came back on did again the relearn took even more that the first time but worked, the next day went to work fine. Went to lunch & when going back to work from lunch it activated again... Changed key cylinder & it starts up fine but security light frozen on I can't turn it off even with relearn processes & I haven't driven it due to the light being on afraid it will active again...
Hey! If you have a smart phone, they have an app for resistors that you can dial in the colors or the value and it will tell you what you have/need. I've done a similar fix for some pontiacs. I also don't know the color bands lol.
All you have to do is unplug the little 3 wire connector after you get your vehicle started after doing the key relearn procedure. On my 2007 express van I didn't have to connect the 2 wires or use a resistor, simply unplug the connector while it's running after it starts. It's been starting every time now. I was having the problem where I was having to do the key relearn procedure almost every time to get my van to start, security light was blinking. Now the security light stays on, would need to add a resistor to get the security light off.
That's a different system and cannot be bypassed with a simple resistor. They used a hall effect switch in the ignition lock cylinder that had a timing factor in relation to ignition positive feeds when you first turn the key on.
with the pats system did every car have a different resistor value ? This would mean that evrery car would need to be programmed to read a different voltage.
A few years before this system they had two wires for theft detterant that turned when the key turned , i learned to buy a new switch , they would just break again ( michigan weather , hard on moving little wire ) so i bought another new one , stuffed the original key in it zip tied in the steering column and used the broken ignition from then on ..the wires didnt turn with the key no more ..
2000 Cadillac El Dorado* When I measure V from harness it reads 0 ko. Orange wire to column reads 0.88ko, key and transistor both also read 0.88ko.. still nothing. What am I missing? Does the reading from the harness have to be 5v? Any ideas?
Hey Paul, i got a question about this video. Now that you hard wired a resistor into the circuit. Is the resistor going to be constantly pulling that 5v ref feed, heating the resistor and causing parasitic draw?
Great question! No it will not be because the circuit is not active all the time. It is initiated by turning the key on. Also, this is a micro amp circuit, that resistor will not ever get hot.
Hey SD. I love your vijayos and I'm at my wit's end watching this one. Can I PLEASE get an idea about my DW's 2006 Mazda MPV getting no spark. Thought it was pats but this van doesn't have it. Been renting cars for three months due to my layoff. I'm in the PGH area. My pride is hurt asking.
Bill. My classes start August 7th at Rosedale Tech. We will be in the classroom for the first 2 weeks , then we will be in the shop. I would be more than happy to help you troubleshoot your Mazda. I'm not promising you a fix but I will be able to tell you what's wrong. email me at paul@scannerdanner.com or hit me up on facebook okay?
What equipment do you use to get picture in picture using a go pro and to get wave forms across the video and different effects you have used in other videos, if I may ask?
You can't do the bypass on the systems that have the resistor/hall effect built into the ignition lock/tumbler assembly. You would need a module to be able to bypass/simulate that signal or possibly a reprogram to eliminate the anti-theft system
That would mean the breathalyzer installer essentially butchered the car, costing not only hundreds for this repair but no doubt forever losing the alarm system.
"PROBLEM SOLVED" after days of trouble. SPRAYED CRC "Electronic Spray" ($3 at Walmart) into my "aging ignition." (Electronic spray will not hurt the "dusty old" ignition). Unbelievable! "1998" Chevy Cavalier 2.2L engine. Chevy wanted $300 for a reset. Had it towed several times and local mechanics tried everything. Found this $3 CRC spray solution in a forum. "Security light" kept coming on. Stalled in traffic. Had to wait to start again. Looked at all the "bypass solutions" and Amazon gadgets too. When it works for you remember to share and pay-it-forward.
Ive been employed as an auto technician for 17 years now. Paul could upload a video on checking his tire pressure and id still watch it. Dont care what its about, reg channel or premium, thankful for all of it.
HEAR HEAR - I agree 100%!
I watched this video for the first time last week and what do I get in today? A vehicle that the customer replaced the battery, starter and electrical portion of the ignition switch and it still wouldn't start. First thing I check for is flashing security light, it's there. Used this bypass method and within 10 minutes had the car running. Thanks for another great video, Paul
In this video Dr. Scanner Danner shows us how to perform an automotive anti-theft vasectomy. My '93 Corvette shares the same anti-theft anatomy as the Caddy. Well done vid again!
Yeah Paul, the old cars are interesting too, glad you decided to film.
Travelingman 1997 Yeah and not everyone owns newer vehicles. It's good to have repair & diagnosis info/procedures on all types of vehicles.
Great video as usual Paul. I've installed a number of the various kinds of Intoxi-Lock systems that are court ordered with some DUI violations. They interrupt the start circuit and only enable it when the unit detects a passed test from the handheld unit that the driver blows into to test for alcohol. It looked like the vehicle had one of those systems that had since been removed.
Dude you are just killing it recently man! I love going on mobile calls with you. These videos are so informative and top notch editing!
Thanks man! It doesn't feel like it at times. So much great competition now these days, don't you agree? (you being one of them ;-))
I really appreciate your comment and support and wish you and your channel all the best as well. I think we all bring a unique way of doing things and it makes our subscribers that much better. Have a blessed day my friend.
absolutely, he has a great niche.....
FordTechMakuloco ......are you guys serious? I watch and follow both of you. I used to teach jet engine/acft engine theory troubleshooting and repair and yet these are the jobs I wished I was doing.
Thanks for following what we are doing Timothy!
I agree on the competition there are many greats that have come on board recently and its even tougher on social media everyone is posting everyday sometimes more. Just a few months ago no one really put much emphasis on it. I wish all the great techs on youtube could get together for some event and diagnose something or at least get a picture together this is truly history in the making and we are all part of it!
As a locksmith I have been working on these systems for years. Several suggestions. First you have to remember that there is a penalty delay after any failed start attempt. (3-4minutes) next, there is a stand alone module that verifies the correct pellet value. This module seldom fails, most failures are in the wires bet ween the ignition cylinder and the connector undre the dash.
Easiest test on the wire integrity is to unplug the connector and measure the ohms between the 2 pins with the white wires in the orange cable. Chek with no key in, (should read open) then just insert the key (should read about the same as the measured resistance of the pellet on the key. Another common issue is dirty contacts in the ignition cylinder. This will read as a lot higher resistance.
With this test, you can narrow down things real quick.
I was thinking that might work to check it. Thanks for verifying my thoughts on it. I will try that to see if the key is sending out the right signal.
I've had bad ecms too.
Every time you have to make a decision to film or not, just think of the smile on my face when that car started! I love fixes that don't involve changing parts. Just plain cool. Thanks for the explanation at the end, invaluable information Paul.
Good video Paul. I love seeing the old cars too. Working on them is going to be a lost art if nobody shows them. The way this circuit works is also very similar to older steering wheel controls and cruise control switches. There is a 5 volt and a signal return line hooked to the BCM or cluster, going through the clock spring, and each button has its own resistor value. A cheap way to have many buttons only use 2 wires.
Great video Danner! I did the same thing to a 90's Buick years back but I wasn't nearly as quick as figuring it out as you were! I didn't think to measure the key's resistance. I bought a hand full of resistors and tried them until it started.
I hate to admit that i use to install aftermarket equipment. I tried to do the best/cleanest job I could..BUT I've seen too many butched up installs. when I went into full time auto repair I cursed the aftermarket guys without mercy.thanks for the video Paul. brought back alot of memories (some bad)..cheers
love the video. as a automotive student who just graduated, im deffinantly considering supporting your priemium channel in the future. thanks for the all the free informative videos
will be the best $10 a month you will spend, but buy the book as well.
I have a similar problem on my son’s 98 camaro. Whether this is the fix I am looking for or not it saved me a ton of time in troubleshooting and figuring out what wires do what. Thanks for showing this!
Unfortunately, not my problem. Still searching for a solution. Was just told by the person I bought it from that someone “borrowed” some fuses out of it. SMH!
I own a 1998 Cadillac El Dorado and I am having this very same issue. I even been looking for someone doing it on my car for the past week thank you sir.
Thank you so much. My car started up yesterday.
I'm glad that I found this video again. I'm going to be looking at a friend's 1994 Olds Cutlass Supreme that is I believe a no crank, no start. They inherited it from a family member and don't know much about it. I will verify it's not anything else in the starting system before seeing if the VATS system is the cause. I don't have access to wiring diagrams unfortunately so that is going to be a hinderance on diagnosing anything.
Here you go (it's $20 to buy service info for your car - same info I use)
eautorepair.adtrk.biz/?a=10817&c=24&p=r&s1=
@@ScannerDanner Thank you. I guess I should have clarified in that I'm not sure if the friend will pay for service information. I use Alldata for my own vehicles but Mitchell also seems to be very good and I may switch to it since the yearly rates are cheaper than Alldata.
I am a remote start tech..I approve of this fix. You can also do it on the aging passlock 2 system. Cut the yellow wire, measure the key side to the passlock ground, and then match it from the car side of yellow to passlock ground. :) You may get errors in the immobilizer system but it will always start. I usually solder in a new wire and tape a wire tie around it as a splint to keep it more stable under the dash!
Thanks James!
Yes that is correct you can use any of the preset values. Look on ebay they sell specific kits of 10 resistors for GM vats/passlock. I forgot to mention using my method the engine must be running when the yellow wire is cut. It also has a default strategy of if the wire is cut when the engine is running it will go into failsafe and ignore passlock but the light will stay on to let you know the system needs serviced.
This was actually how GM did their "factory" remote starts back in the day.
I dealt with a similar issue on my SRT8 Jeep a few weeks ago. The hood sensor/switch that prevents the remote start from working when the hood is open, utilized a 1k ohm resistor. I used shrink tube on each leg of the resistor and then put a 3rd piece of marine grade shrink tube over the entire thing. That thing should never require servicing again and now I can remote start with my hood up since I bypassed the switch/sensor completely!
Great vid man! I imagine the security keys have saved a few cars but I have despised them since the first time I got a key made that wouldn't crank my truck. I called Ford to buy a spare and it was like 300 bucks back then. How could I have possibly been happy with that? Its probably parked plenty a car too for a while. I bet folks have given up and sold cars over security key issue.
DUDE, I've been waiting all my life for 2 things, (1) A good woman and(2) a trick like that. NICE!
Just did two remote starts a couple months ago with this system. Still good info from a reputable source. A remote start bypasses this problem also, if you happen to be in the market for one when this happens.
Keep showing old school stuff. Out west we like our old cars so we keep them running any way we can :)
Now we know why your the teacher and we the students. Nice job Paul!!!
Regarding the Eldorado, I find them a very comfortable and reliable ride, however, because it has some age to it you dismiss it.
If maintained properly they will give one good service and are much less complicated compared to the new junk they
sell today.. Nice job on the diagnosis.
I lost the key to my 97 Lumina went to the dealer gave him the VIN number charge me $50 for a new key. key was cut right so it turned the cylinder car would start for Split Second then cut off. had the wrong pallet in there and they would not refund my money. so I got a volume control knob Off an old CB radio began with it turned all the way down try to start it and incrementally turned the knob up and it started so I measured the resistance value of the volume control knob at the position the car would start at. went down to Radio Shack matched up with the resistor of the proper value and was back in business. come to find out GM Vats had like 15 different possible resistor pellets during those years. shade tree mechanic way of doing it if you don't possess all the proper tools like scannerdanner has and you did not have the key in the first place to measure the pellet
08 silverado lgnition replace
The mighty engineer !
13:10 would this work on a 2001 Nissan Pathfinder.
I got the same system in my trans am. Just subbed and watched a no spark video. It will help me later with testing my no spark issue. Really enjoy your vids man 👍up ✌️
Did this on my daughter's 95 Buick. EXCELLENT video.
That circuit is a simple resistive divider using the voltage divider equation you can determine the value of the resistor inside the PCM.
R1 = R2 * (Vin / Vout) - 1
Where R1 is the resistor inside the PCM, R2 is the resistor in the key (rounded to the nearest standard 5% resistor value), Vin is the voltage measured with the key removed (the voltage reference), and Vout is the voltage measured with the key inserted.
R1 = 1,100 * (5 / 1.6) - 1
R1 = 2,337 kilo ohms
The nearest 5% tolerance standard resistor value (E24 value) to 2,337 kilo ohms is 2,400 K so that's what you would find inside the PCM.
When selecting a resistor after measuring the key it helps if you have a list of the EIA E24 standard resistor values. It lists all of the standard resistors in the 5% tolerance range so you can see what standard value is closest to what you measured.
www.ohmslawcalculator.com/e24-resistor-sizes
there are lots of handy resistor apps available for almost any smart phone. good video. done many of these myself. I usually scavenge potentiometers from old electronics and dial in what I need.
Paul, more than likely the passlock sensor wire is broke @ the lock cylinder, another top drawer video as always!
Old car or not, the principles are the same. Great video Paul
On that 97 caddy where you wired 2 3 thousand resisters in did you put both resistors on one side white or one on each white wire it was hard to see. I thought each white wire would fasten to each end of the resistors. Please help....Thanks a bunch.
the two white wires are basically connected together with a resistor in between them, acting as the key would
Thanks a bunch man i'am an old dude can't afford another car right now so got to keep baby running. One more thing my key reads 3.7 omm so you said that 1.3 omm was 13.00 so what would 3.7 be ? Really appreciate your help you're a great person.
Paul , i think this video is got me on the right track , i got a 2000 3500 utility box bucket truck from a local cable company it had a tracker in it , they pulled it when the boon lines blew out , it still ran , but it has wiring gremlins , this darn truck has been to every shop in town , they all got 300 dollars , but its still blows the prnd after it warms up , about 3 to 8 miles ..ive been fighting this too long , would you like a paid trip to florida ? Ive had it with this problem ..i got boats too ..hogs , deer oceola turkey's ,and one rustic as hell camp site ..if any of that sweetens the deal ..
Great video!!..You, are the Source!!..Maybe too much for the average repair guy, but I enjoyed your detailed description, and was able to follow you on it!!!..I will use this if it fixes my problem...Thanks for the mini-electronics course!!!...Great!!!
Beautiful explanation my man. I’m an automotive locksmith and this info is golden. A lot of people in my area pass these up when ask keys lost.
This easy fix addresses the problem with the resistance reading coming from the key cylinder or key pellet being wrong (broke wire, dirty pellet) but what if the problem is farther down the VATS line? I have a 2000 Chevy Lumina and the security light is constantly on but the car still starts. Don't know if you see this much but just putting a correct resistor in doesn't solve the issue of the security light staying on. I"m thinking maybe a failing theft deterrent module?
Hey Mister Danner you're really good technician thank you for all your help, god bless you. Im a spanishs speaker and just to let you know you are really famous on our community thanks for your help.
Excellent job and review Paul. Never stop learning!!
Thanks jake!
Very interesting and like how you think things through to fix a problem. I would like to know if there is an affordable scan tool that a diy person can afford, I am a retired person who has experience working on most types of vehicles and try to do repairs for people who cannot afford the dealership fees and some shops, but a scan tool would make life a little easier. Keep up the good work.
Robert, it really depends on the type of work you want to do and what market you are in. There really isn't one particular tool I can recommend. BUT, I do recommend that you get a scan tool that offers bi-directional controls, which will put you in the $1000 range at a minimum.
Best video of repair I've looked at. Thank you!
Every day something new thanks Paul Danner
Thank you for the information and thank you for explaining every thing so well.
ScannerDanner is a genius.
Easy way to solder a resistor is to cut the two wires to different lengths and solder the two ends so the resistor lies along the length of the wire then slip heat shrink over the top.
That's a vary common issue and repair on GM vehicles with VATS. Eldorado, DeVille, Seville, Corvette and any GM vehicle with the pellet in the key. Some people prefer to replace the ignition switch because they want to keep the car as original as possible even though it costs more to replace the switch instead of using a resistor. Many of those people are also 60+ years old and think putting in a resistor will harm the car even though we explain doing so will not.
Haha, yup! Such a common problem that most of the GM cars from that era already have this done! Not long after this Passkey system came out, thieves started carrying around resister packs and could just hotwire the thing in a heartbeat.
Or the smart ones made a simple box with the proper resistors and clipped it in with a couple wire piercing clips.
👍 THANK YOU SO MUCH FROM FRANCE 🇫🇷 👍👍👍 Helped a lot (not many Cadillac dealers here....)
Great !!! 😀 😊
Awesome video👍🏻. I am glad you took the time to film. Thanks Paul.
thank you!
I have a 2005 Tahoe. Haven't used a key in it for 5.years I guess the tumblers were stuck. I can put the keys in to it and works fine untill now.i changed the Fuel pump GM pump because I would have to beat on it every three months it's not starting I have three codes that came up today p1626 u126 u1300 fuel pressure is 52+ at Crank wants to start just wondering if you ever came across this before if that's cool I really like your channel I might get your premium subscription anyhow I'm a Old school mechanic trying to get up on the computer stuff it's really interesting. GOD BLESS YOU AND YOUR FAMILY
Not sure offhand my friend. I have a forum on my website though where we can help you further and it is free to join www.scannerdanner.com
Hope to see you there
You didn't complete the job.
You need to go back and replace the Pine Tree air freshener also.
Thank you, informative. Now then, how is the hot wire identified? I have a blue wire from the PCM , and it's designated "antitheft". Problem: I removed the entire drive, cut the PCM wire, so I have the basic engine sensors and the PCM to manage fuel. The wiring is 90% finished. I'm fairly certain it is correct. The fuel pump feed comes on for 2seconds than shuts off, but the engine will continue to crank. Which is correct, although the crankshaft sensor is still sending a signal, as I have an led in parallel. What am I missing? I don't have any potential feeding my ICS, and my OIL LEVEL sensor is still disconnected, and I don't know if I need the oil level monitor to complete. Help
Very good job 👍👍👍👍
Nice video 👌👌👌👌
You teaching very good you good teacher
Thank you!
Scanner Danner great video. I have a question for you and hopefully you can help me out. I bought a 93 fleetwood which someone already bypassed the VAT system. Suddenly one day the car wouldn't start. I continually kept charging the battery but every time I tried firing no it up nothing. So I called my friend in the valley and he told me it was the VAT system. So this morning I went underneath the dashboard and cut out the resisters they had soldered. When trying to measure the resisters from end to end I couldn't get NO reading. But when I measured them separately I got reading; 1.50, 1.50 and .022. And again when I measured them from end to end...no reading. The two wires under the dashboard are exactly what you said purple/white stripe and white/black stripe. Can this be my problem with me ignition? Thank you so much and keep up the great work. Going to subscribe right now. Your boy Eric from So.Cal.
I would think so my friend
Brotha. If you can bypass a Cadillac. Then you can fix anything 😃😃😃. Great video
My camaro uses the same ignition system so Ill prob end up doing this one day lol Those wire strippers look real good if you're in a large area. Thanks for the vid Paul, - Matt
Paul, I have an issue with a Honda Odyssey 2003, I have car key that was working perfectly, I remove the battery and reconnect it, and after this the antitheft don'ts recognize the same key and won't start the engine. Hope you still read commentaries, the last one here is from 4 years ago.
I see them all Luis, but let's move this to my forum okay? It's free to join www.scannerdanner.com
Too difficult to offer back and forth messages here for me.
When you post, be sure to include as much info as possible including current trouble codes if that is possible for you to read them. Thanks! Hope to see you there
BROTHER, YOU DID AN AWESOME JOB ON THIS! IM GONNA CHECK OUT YOUR WEBSITE IN JUST A MINUTE.
Paul did u use warning diagram on this old car ???
i NEED that kit. Great vid to a common problem
Paul, or anyone else.
What type of torch/soldering iron was that? Did it have a flame, flameless, electric?
Great video, thanks for sharing information.
It's a butane soldering gun and I linked it in the description of this video. Thank you!
ScannerDanner Great, thanks for the reply!
Here is the link just in case anyone else is reading. www.jbtoolsales.com/portosol-sp-1k-soldering-iron-cordlss-butane#oid=1014_1
Thanks for a utterly good presentation indeed Sir, Ted instructor/educator
Thanks for the information. My 1995 chey. Caprice is doing this. Waiting on resistor kit. To arrive. Then I will have it back on the road.
Hey Paul. I love your videos. I constantly learn something new. I just bought a used verus pro from my snapon dealer and was wondering if your digital book can be viewed on it? and also if it can be viewed on multiple devices ie; my cell phone, laptop, etc.I'm sure it can but just want to make sure. keep making awesome videos brother. God bless... ps when in doubt, FILM IT!!!
Thanks Joshua! Yes, the eBook can be viewed on your Verus!
Even the old stuff!!! My 97 Buick has a security light on! Now, I know what that means!! YOU DA MAN, SCAN!!
Hey ScannerDanner this is your friend again Eric from So. Cal. I wrote you a month ago about my 93 Cadillac Fleetwood with battery and ignition issues. I found the right resistor for the ignition and the car fired right up. The situation I'm having now is like the next day I try to fire it up and it won't start, but the security light still goes off so I know it's still bypassed. So I have to disconnect the battery cables and touch them together to short out the computer to erase and codes that might be inside. Connect the cables back to the battery and it starts again. My question is does the computer has to be re-learned because I did change computers (BCM) and if so how do I go about doing that? Thank you so much...Your friend Eric from So.Cal.
My 1997 Deville has the same problem thanks for the help.
So a guy I worked with at Chevy dealer had a Corvette that had somehow learned a different resistance than it's Pill on the key due to some corrosion somewhere. They apparently had no way to find out what that value was and he was trying to find ways to bypass it. If he had hooked in a variable resistor into the circuit and turned it, assuming there is a PID for VATS to say YES this is the right resistance. Would that have worked to figure out what resistor was needed to bypass it?
Great fix Paul, Keep bringing us with you.
I haven't'watched all this video yet.....I might need to do a little more digging, but in the 4th gen F-body world(93-02 Camaro/Firebird), I think the BCM(Body Control Module) "learns" the resistor value. I don''t recall it going through the instrumentation cluster. I was surprised when you said instrument cluster as I was expecting you to say BCM instead.
The BCM reads the resistor value, if correct, it then enables theft deterrent relay to allow the starter to work.
As I post this schematic, I may find myself wrong as this says "Theft Deterrent Module". This is for a '95, so they may have integrated it into the BCM for '96 and up(I have a ''96 Z28). Edit: Checked my '96 service manual and the BCM does control VATS starting in this year model.
shbox.com/1/pass_key.jpg
Interesting how varied the implementation of VATS is across models.
I wouldn't sweat worrying about videoing about VATS. The bypass info has been out for a looooong time(at least it has in the F-body world). =)
no problem man. Check out that last part of the video, I show the diagram and this one does go directly to the IPC
There a company called New Rockies. They sell aftermarket modules for Gm and Gm only for all security Full bypass. Some security module's send a pulse width signal to the pcm to keep the injectors pulsing. This module produces the signal the pcm needs. Just installed 1 on a 93 Deville. Rolling on.
Paul i have been watching several of you videos and you appear to use the "Vantage" frequently. I have the opportunity to purchase one of them but I was curious if I should wait and hold out for a "Vantage Pro" to come along and this would give me a two channel scope. Or am I way off base with my thinking. I use a Maxsys for my main scanner.
Not at all!. Hold off for a Vantage Pro
Hi stumbled across your video great explaining, only I need help with a passkey 3 system on 03 suburban, did you by chance make one?
You need a module to bypass those as it is a timed signal with the ignition switch turn on
Lol all come on PAUL it's not that hard to change out the ignition lock cylinder have some fun. Then you could've taught them how that is done as well. I still enjoyed the video. You met me at Eric's one year. Don't know if you remember me.
Able Lock with these, the lock cylinder comes with a standard steel key to fit the cylinder, you have to take your old key if you have it, or have the resistance value of the pellet, then go to a locksmith or shop that has the pellet blanks (gm used a limited number to cut down on having to stock so many different ones) then have the correct pellet key cut from the steel master. then its just replacing the cylinder. most of the ones I used to do failed because the two metal contacts in the cylinder wore out. with the keys being $25 and up, I keep a assortment of resistors on hand and just solder the correct value across the connector at that plug under the dash.
Hi i have same Cadillac same problem this video help my worry well thanks .
Great vid thank you for making everything so clear. Im just wiring in the spare key as the resistor for my 95 Eldorado. I suppose if it does work I will later wire in a resistor...
i keep watching you i keep learning from you i wish i could download your book im from egypt
I couldn't offer a full refund on the eBook if it was a download my friend. Sorry.
at least i want you to know that i do fix all my friends and my neighbors cars when they breakdown for free and i keep telling them about you and we all thank you i dont have a master car to buy it on line unfortunately
ahmed
email me a paul@scannerdanner.com and we can figure something out for you to get the eBook
1085 to 1195 ohms is the acceptable range for this particular key of 1130 Ohms, key blank number 5. Replacing the lock mechanism is easy, including snaking in the orange covered wire. I have to replace the electrical switch 9n my car, after it chose to let the smoke out this morning. My Security light is perfectly happy with my key, but I've still got no crank. The last thing that happened before me turning the key off, was the starter engaged on the running engine. At the VATS relay, I have an intermittent battery voltage, and the relay buzzes. Relay seems fine, but mechanical pressure on the key affects the intermittent power condition at the relay. I think my electrical portion of the key is worn out, and it's an air bag car. I'm looking for a video on how hard it is to replace the actual switch the lock cylinder manipulates. Can't find anything melted under the dash, but something surely is. It's a 1990 IROC, air bag and pass key 1. I'd like it all to work right, but......
I have a 99 silverado anti theft went on did a relearn processes had no problems until 2 weeks ago. Came back on did again the relearn took even more that the first time but worked, the next day went to work fine. Went to lunch & when going back to work from lunch it activated again... Changed key cylinder & it starts up fine but security light frozen on I can't turn it off even with relearn processes & I haven't driven it due to the light being on afraid it will active again...
Hey! If you have a smart phone, they have an app for resistors that you can dial in the colors or the value and it will tell you what you have/need. I've done a similar fix for some pontiacs. I also don't know the color bands lol.
All you have to do is unplug the little 3 wire connector after you get your vehicle started after doing the key relearn procedure. On my 2007 express van I didn't have to connect the 2 wires or use a resistor, simply unplug the connector while it's running after it starts. It's been starting every time now. I was having the problem where I was having to do the key relearn procedure almost every time to get my van to start, security light was blinking. Now the security light stays on, would need to add a resistor to get the security light off.
You are describing a totally different system
@@ScannerDannersorry I started typing that comment to a different video and it posted to this video
I hope you get to do something comparable for S10s, Blazers, etc.
That's a different system and cannot be bypassed with a simple resistor. They used a hall effect switch in the ignition lock cylinder that had a timing factor in relation to ignition positive feeds when you first turn the key on.
with the pats system did every car have a different resistor value ? This would mean that evrery car would need to be programmed to read a different voltage.
A few years before this system they had two wires for theft detterant that turned when the key turned , i learned to buy a new switch , they would just break again ( michigan weather , hard on moving little wire ) so i bought another new one , stuffed the original key in it zip tied in the steering column and used the broken ignition from then on ..the wires didnt turn with the key no more ..
2000 Cadillac El Dorado* When I measure V from harness it reads 0 ko. Orange wire to column reads 0.88ko, key and transistor both also read 0.88ko.. still nothing. What am I missing? Does the reading from the harness have to be 5v? Any ideas?
Were is the Bcm control module located on a 95 Camaro V6 3.4 motor im having the same problem
I don't have the key resistor but the one with the resistance in the ignition cylinder. Should I just place a 2k and do a relearn?
Is the wiring the same in a 95 cadillac deville
Hey Paul, i got a question about this video. Now that you hard wired a resistor into the circuit. Is the resistor going to be constantly pulling that 5v ref feed, heating the resistor and causing parasitic draw?
Great question! No it will not be because the circuit is not active all the time. It is initiated by turning the key on.
Also, this is a micro amp circuit, that resistor will not ever get hot.
Hey SD. I love your vijayos and I'm at my wit's end watching this one. Can I PLEASE get an idea about my DW's 2006 Mazda MPV getting no spark. Thought it was pats but this van doesn't have it. Been renting cars for three months due to my layoff. I'm in the PGH area. My pride is hurt asking.
Bill. My classes start August 7th at Rosedale Tech. We will be in the classroom for the first 2 weeks , then we will be in the shop. I would be more than happy to help you troubleshoot your Mazda. I'm not promising you a fix but I will be able to tell you what's wrong. email me at paul@scannerdanner.com or hit me up on facebook okay?
What equipment do you use to get picture in picture using a go pro and to get wave forms across the video and different effects you have used in other videos, if I may ask?
just multiple cameras a desktop feed and great editing software (Cyberlink PowerDirector 16)
Hi Mr danner j got a 2002 buick regal 3.8, I wonders if you can tell me how to bypass the vats system in my car,thank you cheers from ontario ca.
You can't do the bypass on the systems that have the resistor/hall effect built into the ignition lock/tumbler assembly. You would need a module to be able to bypass/simulate that signal or possibly a reprogram to eliminate the anti-theft system
Ever heard about shrink tube? 😉
that car had a breathalyzer interlock in it at one time that is the red sticker you see
dassme1 Talk about a cash cow installing those things. Last call for alkee haul!
That would mean the breathalyzer installer essentially butchered the car, costing not only hundreds for this repair but no doubt forever losing the alarm system.
which I bet did 0 good anyway :)))
@@InsideOfMyOwnMind it was the tumbler. Not the wires.
You are THE man Dan...Great vid bud !
Love the videos you make, very informative
Hey Scanner thanks for the reply to my question. What are your thoughts on an Autel maxipro 808, Stephen Cox had a video of it for $699 on Amazon.
GM USED ONLY 15 DIFFERENT RESISTOR VALUES...NUMBERED 1 THRU 15. YOU CAN BUY A BAG OF 15 RESISTORS THAT COVER ALL KEYS FOR $10.
hey like that soldering iron i use the same for many years
it looks like a volume control of a radio, will it work if I used a transistor radio volume control as my potentiometer?
where did u get that tester kit from?....it's really cool.