Removing the Failing Code-Alarm From a 2002 Jeep Wrangler TJ

I’m phrasing this title carefully, in case another Jeeper needs some help out there.

And your standard Internet Warranty applies – at no time does Ramblingmoose.com take any responsibilities for any actions that come from this article.  You perform any work on your car at your own risk.  If you feel uncomfortable with working on your car, take it to a qualified professional.  I’m not a qualified professional, I merely took the time to find the files out there to remove the alarm from my car.

Again – take this as help, but you are doing this at your own risk.  It “worked for me”.

In the 16 years I have had the Jeep, I have done only two mods to it that effect the electrical system.

I upgraded the radio,  and that is powered off when the key is removed.

I ordered an alarm installed at purchase by the dealer.

That is the problem.  Since the car sits for a while between uses, the alarm was draining the battery dead.

I know that because whenever I went to run the car, it either would not start, or pressing the Disarm button would make a strangled noise from the alarm.  Most of the time the alarm was not working at all.

So in an effort to diagnose my electrical system, the thing had to go.

The goal is to render the car back to original manufacture or as close as possible to it.  Since the alarm noise maker under the hood had rusted to the point where it may do more damage than good in removing it, I’ll leave that and the valet switch in place.

I also ended up removing the bypass switch from the glove box and repurposing it as an ignition kill switch.

So the car starts without the alarm now as long as that switch is in the right position.

 

To determine whether you have the right alarm system, you have to look at the alarm itself.

Luckily for me, I had the model sticker still on the front after 16 years.

Taking that sticker and the number on it, I had to search to see if it made any sense.

No, it hadn’t.

I went back out into the car and flipped the thing over.

On any electronic appliance that transmits  over the radio waves in the US, there must have been an FCC Sticker.  That sticker has and FCC ID Number.  The FCC never forgets, and that information can be searched on.

That number told me that it was from Code-Alarm and that it was an EVS II (two).  It told me who was responsible for this at Code-Alarm and some other information that was all worthless.   You see, Code-Alarm, having being bought up by Audiovox which became Voxx International, those people and the original documentation are not completely available.

Documentation you will want to get.  This is a link to the original instructions by Code Alarm and Chrysler to the tech on how to actually install the alarm system.  In case my instructions get to be too much, check this link.

The View Behind the Knee Kick Panel of the Wiring Bundle After Work

To achieve this, you need to remove the knee kick panel under the steering column.  Two Phillips screws.

Then remove the shroud from around the steering column and key.  Two Phillips screws.

Both will give you ample room to work with.  I had a lot of trouble working in the tight spaces, and really could have used a “Jeep Chick” with her smaller hands and body.  But you do what you can with what you have, even if you are a bruiser of a guy like me.

The way I did this was to remove both connectors from the alarm control computer box and that rendered the car immobile.

There are two connectors, a 6 pin and a 22 pin connector.  The connection to the ignition is in the smaller 6 pin connector.  The wires in question are the two yellow ones of the same thickness – one is solid yellow and the other is yellow with a black stripe.

There is a third yellow wire on the 6 pin connector that goes to a kill switch in the glove box compartment.  I used this wire for testing and later for a kill switch.

Ignore the other wire harness for now.  I actually left it in place because I had to travel somewhere, but that is the feed to the alarm emitter under the hood (black and red), plus a bypass (brown wires).  The remaining wires are to a shock sensor, hood switch, light sensor, and back door switch.  I am purposely ignoring them for now since as I said, I left that harness in place.

From the original installation document:

  • Blue – Jumpered off the ignition harness (To be Cut)
  • Red – Jumpered off the 12+ Volt line in the ignition harness (To be Cut)
  • Yellow – To Ignition Side of the yellow ignition line (To be re-joined at harness)
  • Yellow with Black Stripe – To Starter Motor side of the yellow ignition line (To be re-joined with the yellow ignition line above)
  • Black – To Ground (To be Cut)
  • Yellow – Thinner solid yellow line – (To door on/off switch.  Reuse as kill switch)

Trace the thicker yellow and yellow black striped wires from the 6 pin harness back to the steering column.  In mine, everything was wrapped in electrical tape.

There is a yellow wire that goes from the wiring harness on the left of the steering column, and in mine, it was cut and spliced to the yellow and striped wires that came from the six pin connector.

I removed the spliced-in wires and had the original yellow wire parts from the jeep exposed.

Those two pieces must be reconnected to be able to start the car.  You can test it by clamping the ends together.  At this point the car was disconnected from the alarm, and the car was able to start when I connected the wires together.

Now, a variation.

In order to clear out the alarm box, the box was now hanging on the floor with its two wires.  The grey wire is the antenna to the alarm.  The yellow wire runs under the dash to behind the glove box.  That yellow wire had a switch on it and I wanted to use that switch as a kill switch.  Flip it one way and the car can be started, the other way and it’s never going to start.

Good idea huh?

Since the yellow wire on the steering column was too short for me to comfortably connect using butt connectors on that 88 degree (31 c) morning, I got frustrated and this idea.

I connected one end of the switch to one end of the yellow steering column wire that came from the ignition key switch.  The second end of the kill switch went to the other end of the yellow steering wire.  That second end of the wire disappeared in the wiring harness of the car.  Both ends were tidied up with crimp connectors, then taped over with electrical tape.

The kill switch was tested and then left in the car on the on position.

I got out of the car after putting all panels back in place and taping any dangling wires down.

 

End note:  I was at the point where the car would not start on the third day after driving it enough to charge the battery.  I just got back this Wednesday morning.  This was done and mostly written on Saturday after working on the car as I did it.  As I tested the connections, I’d turn the ignition enough to see if the starter motor would start.  Made sure to test it each intervening day but never drove it – so the battery was not really topped off.   This morning the car started like a champ and said that it’s ready for duty.  (He’s a Jeep after all) 

So we’re golden and I found the problem!

 

Some History about Code Alarm and what happened with them after I got my Jeep.

Code-Alarm was a company that contracted with Chrysler for their installed car alarms.  The Jeep TJs were not coming from the factory with an alarm.  The alarm was installed at the dealer.  My dealer in Norristown, PA did a fine job of putting everything in place and it worked well for 15 years.

In the intervening years, the niche manufacturer Code-Alarm got bought out by Audiovox.  Audiovox later renamed itself as Voxx and that is where it is today.

So the Alarm in my Jeep is an orphan product.  If you have one in your car, it may be a good idea to look into removing it or replacing it.  In my case a wee little switch is enough.

Maybe Voxx International can help.  Or perhaps Chrysler/Jeep or whoever is owning them these days.  Or maybe they could just bring back the Jeepster

Rack Can’t Help Fix A Cellphone, or Can He?

I’m that guy. I can repair a piece of electronics down to “the board level” and replace the components that are on it.

Lets be fair, some of the components are beyond me, smaller than a grain of sand. But the larger things are possible.

If I go out and buy a piece of electronics, I look into how repairable it is. I’ve replaced volume controls on a transistor radio, and the USB port on an external hard drive case.

I guess I was lucky that time, everything was spaced out just so.

Some of that can take a small forever to fix too, but I will give it all a try.

Once the warranty is up, I’m going to at least look inside the case of something.

In this case, it was much more involved. “It” was my HTC One M9 Cellphone. “It” was also rated “Very Difficult” to work on by www.ifixit.com and that was fair.

You see these days, you find things sealed up, glued together and made so that you the owner never have a chance of putting a knob back on something. Specifically I am thinking of anything that comes out of Apple these days.

It’s also why I don’t use Apple laptops. I’ve had to replace bits on my own Thinkpads, Dell, and HP computers. There’s a limit with those too, but I demand the ability to easily replace the hard drive and the memory.

Try that on a Mac. I’ll wait.

Didn’t think so!

I waited for the house to be empty. Had to. Humans being social, they demand attention. Since the replacement of the battery on iFixIt was rated “Very Difficult” and at 30 minutes, I knew that I would probably have to take double the time to put a new battery in the phone.

It took a half hour alone to find the tools to do the job, and I have the tools. We keep them here specifically to do this sort of thing.

Started the whole mess at about 10:30. It would give me time to get it done, shower before lunch, and do it in a leisurely manner.

Nope.

That first half hour of very carefully taking off the plastic fascia, and a few very strange screws had me stressed.

Then the wet nose happened.

Rack was checking in. He padded across the tile floor in the quiet house without my knowing. I had a tickle at my elbow and looked over at the familiar black and white face.

Then I glanced at the clock. 11:30. I frittered away an hour getting tools, and a plastic sliver off the top of my phone.

Oh and two “T5” Torx screws from the top of the thing. I wasn’t completely lost.

Basically I was taking it slow. It’s a beautiful piece of hardware, but it’s ridiculously difficult to work with.  In comparison, my older Samsung Galaxy S4 snaps open with a plastic cover in the back I can run a fingernail under.  The battery is user replaceable as well as my SIM and my memory chip.  Done in seconds.

I took the rest of the time to Noon to get the entire case open and splayed out in front of me.

Sighing, I got up and let Rack out for a walk in the back yard, and to make my lunch.

Lunch, Shower, and back at it in about a half hour.

The disassembly of the phone is a fourteen step process.

Remove screws.

Remove antenna wires.

Remove ribbon cables held in by ZIF connectors.

Lift motherboard.

Remove battery.

It was about 3 in the afternoon before I had the thing disassembled and reassembled.

Each half hour I had a wet nose looking in on me. I guess that I was worried, Rack probably smelled it. He’d come in, look in on me, sit down, make me clear my head.

I’m glad he did. Oh he can’t handle a screwdriver or a soldering iron. He doesn’t have opposable thumbs. But he did serve a very good purpose.

He made me pause and look around. These pieces are so small that in some cases I used another cell phone to take a picture, zoom in, and look at it.

As a result Rack stopped me from having total vision failure from eye strain induced by bad design and teeny tiny itsy bitsy electronic parts.

Well, great! Time for a Smoke Test. You know, press the magic button and see if it comes on?

Oddly enough I had bumped it trying to seal the back and the phone came on before it was snapped in place.

Camera did not work. Flashlight did not work.

Rack came back. I paid attention to him. Set that phone down. I couldn’t see the monitor without

being right on top of the thing now.

When Rack left, I pried it all apart and re-seated all the connections.

Success! I could tighten those screws down and begin to charge the battery.

That half hour repair took me six hours.

Including lunch and a shower and letting Rack out when he needed it.

I think I needed that pause more than he did but I’m not letting him know that.

Trust In Dog, They Know.

That’s a mantra here. There’s a certain something that having a Herding Dog around the house will enhance. They learn. More importantly, they learn YOU. They also know when you need a distraction.

It’s not a weirdly bark at anything that moves thing. He actually knows when there’s too much going on, time to take a break.

There’s that wet nose.

Postie coming by and you’re involved in something? “Moof.” Rack says. Pay attention. Go get the mail, there’s a wee little box in there as long as some circulars and a J. Peterman catalog.

Like I said, Trust In Dog, They Know.

Now the Parrot? He’s shady. Needs to be watched over. He’s got his eye on the woodwork in this house…

Using Aftermarket 18650 Lithium Batteries in a Rechargeable Garden Tool

Let me start out with saying the lawyer words:

This is at your own risk.

The batteries I am using are Lithium Ion batteries scavenged from (one or more) laptops.  If you puncture, overheat, or otherwise damage one of these batteries it is possible that they may catch fire.

Do not short circuit these batteries.  Use a charger designed for these batteries specifically.

This is at your own risk.

The Science Words:

The batteries were scavenged from laptops, and you can get 18650 batteries online that will be of full capacity.  I am using scavenged batteries because I had a couple old laptops that were going to be recycled.

From what I have learned, you can not charge these Lithium batteries in series.  Connected as a block, the batteries will overheat when charged and they may catch fire.  The circuitry in a laptop will charge the individual cells separately.

They are 3.7 VDC cells, which makes them attractive for this project.  The saw took 14.4 VDC which is four cells.  I had 4 2 cell blocks which gave me more amperage to push into the saw.

I get around all the warnings doing it this way because the cells can be removed, and charged individually in a charger made for 18650 Lithium Ion batteries.

Or so it says when I bought it from a Chinese Supplier – and we all know how trustworthy Chinese Suppliers can be.

Or not.

Sarcasm aside, here’s how I did it.

I had a Saw that was given to me as an oddball item.  No battery pack, No Charger.

I had all these batteries.

I ordered the battery holder (that black thing with the blue cells in them) for emergency purposes.

Connecting four batteries gives me 14.4 VDC so I was able to test the saw by connecting the terminals directly.  The motor worked.

Waiting for a reason to heat up the hot glue gun, I decided to do this one sunday morning.  It took me about an hour.

Step 1 disassembly.

Remove all screws and set the mechanicals aside.  I was lucky that the parts did not fall out onto the table when I went to open the saw, and nothing was plastic welded together.

Luckily, the electronics were simple, and the plug into which the original battery pack was to fit was obvious.  I could slide that connector out and solder my battery pack to that connector permanently, glue the battery pack in place, and screw things back together.

The placement of the new battery pack was by eyeball, and made sense to me.  Your placement will probably vary.  See my last picture for what I’m getting at.

Step 2 solder the connection.

I realized I could thread the two wires from the battery pack through the air vents in the side of the saw without drilling holes.  Of course, if you are modifying a different tool, your placement will vary.

Using Hot Glue, I was able to attach the battery holder to the side of the saw and only covered up one of the multiple screw holes on the side.

When that was placed, then I could connect the block’s wires to the Red, Positive connector to the Saw’s Electronics with Solder.  Red-to-red – to keep the polarity of my connections correct.

I then did the same for the Black, Negative connection.  Again, Black-to-Black to keep the polarity of my connections correct.

I did a test to make sure that the wires were soldered to the connector block like in the picture above.  The motor groaned to life, the wires held, and I noted that the batteries needed a charge.

I then disconnected all of the batteries and wrangled the connector block back into place, seated the wires, and screwed the Saw back together.

Step 3 the finished product.

Once I seated the wires inside the saw back in their original channels, I could close the unit up back as normal.

After it was placed back together, I tested the saw once again and everything worked.

Great!

Step 4 Why I did it this way instead of getting a battery pack.

So yeah I could have thrown money at this saw.  The thing was that I knew that I would not need it much.  Having a lot of these batteries around, as well as the battery packs from last Hurricane Season, I knew that I could rig a lot of this sort of thing together.

I had a couple of other tools in the shed that I could have done this with, but the Saw was the only oddball that ran at 14.4VDC.  The other tools were powered by 18VDC and we had gotten a charger and a battery for them.

So my red saw being the only odd man out was going to get “hacked”.

Safety would dictate not doing it this way, but I do have the batteries, and I did have a little better than basic knowledge of electronics being able to replace individual components on an electronic appliance.

“I do board level repairs” on electronics, when they are readily apparent as to what needs to be replaced.  This kind of a mod is trivial.

It rendered it “more safe” because the batteries are taken out of the unit and charged separately.

But ultimately this kind of thing is at your own risk since it is what a pharmaceutical would call an Off Label Use of the product.

But really ….

I Think I Sold A Jeep

I have been driving Jeeps since 1996.  Real Jeeps.  Jeep Wranglers.  None of that cushy living room sofa giant beast crap out there that you suburban types like so much.

Sure, they’re a bit on the simple side, even crude.  I can see the sheet metal that makes up the part that we call The Bucket when I sit down in it.  That is by design.  It doesn’t need extra frills like layers of plastic to muffle the noises and make things all “pretty”.

Plastic is optional, it will just break anyhow.

It is as simple as you can get for a car.  At least it was.  Mine is a 13 year old Jeep Wrangler TJ4 Liter Inline Six Motor designed by AMC.  That motor could be called the last gasp of AMC before it was bought by Chrysler.  Chrysler knew a good thing and kept it in production until 2006 when they went with a V6 that is slightly smaller.  It’s predecessors date back to the early 1960s, so you know it was a keeper.  Pushrods and all that sort of mechanical “stuff” made for a tough motor that really didn’t need a lot of electronics to keep it going.

I’ll keep my straight six, thank you very much.

I had a repair to do to it because, Jeep.  You see Jeeps have the reputation of being tough but they also have a problem with their electronic controls.  You get a check engine light that comes on around 40,000 miles and people scratch their heads and say “It’s a Jeep” and walk away.  Meanwhile that light stays on and you’re annoyed.
No.  I don’t.

Thanks to my buddy Craig who gave me his old code reader, I was able to find out that the throttle body sensor wore out.  I replaced it in my driveway.  The only grief was the mosquito bite I got while bent over the hood.

No codes, no lights.  Happy Jeep, Happy Jeeper.

We noticed that there was a Jeep sitting in a driveway a block or three from the house on our dog walk.  Someone was putting it out to pasture… or rather selling it.  Good price too, 8900 for a Wrangler that was newer than mine.  Of course mine is Cherry and in Good To Excellent Condition With Low Mileage (45K) but that’s a different story.
Or Brag…

I don’t think they’ll miss that Jeep.  There was a Black TJ sitting next to it all lifted and chromed and basically pimped out.  So there’s still a Jeep “In the family” for when they want to go ride.

I saw it, and wondered how long it would take to sell it.  One day it was gone.   I thought it was sold.

I walked past the property and up to the park when I saw that Jeep making a very tight turn.  Too tight, the wheels rubbed with a “VRRRRT!” sound.

If you put too tall a tire on a Jeep, they will rub.  You can fix that by loosening a bolt.

That was exactly what I told the woman who was going to buy it:

“Hey, you’re rubbin’!”
“Oh you heard that?  I don’t know…”
“It’s easy to fix!  Just a bolt!”

I went into my Jeep Guy Geekery full on at that point.  Showed the woman then and there which bolt and told her to look online for my blog.  “I did the same thing.  Put 31s on mine and took all sorts of pictures to show you what to do.  It’s a 15 minute fix if you rush, 5 minutes if you take your time!”

I told her to keep an eye out for the AC Controls since the resistor pack burns out.  You can fix those too, but they’re annoying to get to.

I’m on my third one.  They usually last about 20,000 miles if you keep it on 3 instead of 4 like I always did.  4 is just too damn loud but you don’t hear it once you’re over 55MPH anyway.   Soft tops are loud, no way around that.

She smiled and thanked me over and over and took off with a quick chirp of the back wheels.

New learner to a stick.  You need a stick, at least once in your life.  A stick shift gives you a healthy respect for what your car does.  Much more of a primal feel instead of the numb computer-room feel of an automatic transmission, especially one of those new Continuously Variable Transmission.   Those things turn your motor into a constant drone that gets wearing after a few minutes.  The motor runs at peak torque the entire time and never changes.  Monotonous.

I went on my way.  Never saw her or the Jeep again.  The motor sounded like silk so she got a good one.

I know I did.  You see, I went in for an overdue oil change the other day.  The man behind the counter hinted strongly that he wanted to buy my car.

Nope!  I don’t want a computer room on wheels.  I’ll stick with my car.

“You know, I understand I can get classic plates for it now.  How about THAT!”

I left with an oil change and a new air filter and a big ol’ smile on my face.  If that car doesn’t make you happy every time you get in it, why have it?