348 central locking issue

I searched the forum but can't find specifically what I have happening.

This morning tried to lock the doors when in the car.. pressed the center console button - nothing. The only way I can lock them inside is to push down the driver's side lock on the door.

If I press the unlock button, the passenger side pops up then back down and the doors won't unlock.

Also I can only lock the car with the key from the driver's side. If I lock from the passenger side, it locks then pops up.

Fuses in the truck look good.

Could it be a relay or the switch itself.

Thanks ahead of time.

David

 

Dave,

My 94 348 was doing something similar. My problem was broken wires in the door plug on the drivers side.

Brewman

 

The number one cause of this is wiring to the doors through the hinge area. You can also check the switch itself but I'd go first with corrupted wiring in the harness into the doors.

 

Thanks...any idea what pin it might be? I just bought new pins to fix a speaker issue and didn't see any issues with other pins.

Mobilized reply by David

 

Also check your door (interior light) switches - near the lower hinge.

Centre console lock button wont work if it <thinks> one of the doors is open. Hence, check to see if the interior light is working OK.

Failing that, its only 2 screws underneath the bins in the ashtray, to remove the ashtray, then a 3mm (I think) allen key to remove the shifter surround - dont need to take the knob off - to lift that panel and then unplug/replug the connector (giving it a squirt of contact cleaner if you have any)

Personally I'd try both of those before I dove into the door multi-connectors.

 

just finished fixing this problem on my 348, both door actuator motors were screwed so replaced them both, the actuators dont last forever and will need replacing eventually, aftermarket ones work fine but lots of modifying to do but doing that stuff doesnt bother me. Doors lock and unlock perfectly now everytime as they should do. The door wiring does have issues aswell which is well known, cut off the door plugs and rewired both doors, again lots of work but now everything works perfectly, and the wiring fixed the slow windows problem aswell. Now everything in both doors works flawlessly, alot of work as I said but worth it. I got locked inside my car one day and couldnt get out, then another day I got locked outside and couldnt get in. You will need to replace BOTH door actuators for sure on your 20 year old + car and when you do you will be happy how the locking never fails again. When you get the actuators out of the doors you will see exactly what I mean, faulty actuators causes the locks to pop up at times, good luck

 

If you want a bullit proof 348, skip the pins and just connect the door wires together with solder and heat shrink covers. You could probably do it with crimp connectors but all it takes is one poorly done crimp and you'll have more problems down the road. They are all gonna fail eventually if you keep repairing them pin-by-pin. Save youself the prolonged torture...get 'er done! It will be one less thing to worry about.

 

Dave,

I'm traveling and away from my drawings so can't help there until I'd next week. Sorry. Comon fchatters someone send Dave the drawing for the door circuits. He posts frequently to help others. Time to pay back.

What year is your 348. Later models have a door lock E U. Wiring also runs between the doors so either side could be the source of the problem. After spending several days trying to locate my problem I rewired both door plugs. This not only fixed my door lock problem but also the windows now operate at a reasonable speed w/o accelerators.

 

Thanks Paul, but no plans on doing this. Replacing the pins is pretty easy.

Mobilized reply by David

 

Thanks. I'm on vacation myself so not near the car. Its a 93 with accelerators installed.

When I get back I'm kid free that weekend so I'm tearing into it. I also have a fog light not working even after bulb replacement so I get to sort that too.

Thanks much for the offer... will look for them when you get back too.

Mobilized reply by David

 

Where did you source the actuator?

Mobilized reply by David

 

I am going to tackle this one of these days.

 

electronics stores, ebay, virtually everywhere sells them BUT like i said, theres alot of modifying to make them work because the ferrari actuators are considerably shorter in length so they wont just bolt on and problem solved, the catches must be modified first

 

According to the wiring diagram, the wires to the passenger side actuator are red/black, blue, violet/white, and black. Driver's side is the same, but there is also a brown/red wire. So there are 4 pins in the passenger side connector, and 5 in the driver's side that could be malfunctioning.

 

Paul,

Got back from the vacation and finally had time to look at the car tonight.

Sorted the Fog Lamp issue... turns out I didn't have the connectors smushed together all the way. that one had me worried it was in that center console. Whew.

I figured even though it's dark out (lights in the garage suck right now -- have the cans installed just too hot to get in the space above and wire them up) I'd pull the door connector.

Sure enough on the driver's side the red/black wire was dangling there like a worm on a hook. I have the tool and the new connectors so I figure this weekend when I pull her out to clean her up for a drive, I'll redo that connector. Most likely that is the cause but I'm not ruling out something on the passenger side as well. BUT I've never had that side loose like I have the driver's so I bet it's this one.

I'll take some pics too.

Thanks again for taking the time to get me the colors Paul. Will post my results this weekend.

You guys all ROCK!!!!

 

My advice would be, as long as you've got it apart, replace all the pins. They are all gonna fail at some point, and you don't want to be in a sudden rain squall and not be able to raise a window, or worse: be listening to Slash's lead on "Sweet Child o' Mine" and lose signal to a speaker.

 

Good point. But if it rains, even with the top on it's like a sieve. LOL.

And why be proactive... It's a Ferrari man, if you aren't sorting some issue with it every weekend, well it'd be a Honda and lose it's panache!

 

All of 15 mins later it's sorted.
1st shot is the connector opened.
2nd is the bad one.btw..its pin 21 I believe... red with black.
3rd are my crappy tools.
4th is the completed connector.

Not sure the pictures show it, but I used a small screwdriver to push the female back toward the door to get it out. If you'd see my toolchest you'd know why I can't find the actual tool to take it out.

Now just shove the thing back in the connector and button it back up.

The part number for the socket is 1-66360-0-ND from digi key.

And that is how you sort crappy old Ferrari wiring.

Mobilized reply by David

Ps - could I have done them all? Sure but its not like a major and what will I have to do next time a connector in there goes bad? Its a Ferrari, I have to something other than drive her
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Now go and have a glass of wine to celebrate another sucessful fix. We just came back from Napa and have pics and stories to tell as well as some good wine. We should get together.
Mike S.

 

Well done, David.

I think you did it right fixing the bad pins in just 15 nim. I had the same problem, but it was worse in my 348, nothing worked; central locking, windows and electric mirrors. So I eliminated all the pins, as Pnicholasen suggested, and welded the wires. No problems since. However I spent the whole day doing that tedious work. You can do it this way anytime, If you have problems with the pins again.

Regards

 

So you were able to extract the pins with just a screwdriver? I thought a special pin-extraction tool was needed to get them out.

Also, are all the pins in the connector the same? I know that there are different gauge wires in that connector.

- Eric

 

There is a tool, but I've found it doesn't fit the hole. The screwdriver was used to push the female socket out the back of the plug. The connector has "catches" on then which engage when pushed into the plastic.

There are different gauges, but they appear to all be smooshed in the same size connectors. Ill check that tonight and confirm.

Mobilized reply by David

 

Bonjour , j'ai fais un tuto qui exlique comment retirer les connecteurs. (Page 14)
http://ga68.free.fr/autre/FERRARI-348ts/Methodologie_Connecteurs_Porte_Ferrari_348-V2.pdf

 

Thank you.. any chance you have this in an English version?

 

Hello,
If any of you can redo my tutorial in English, I would be ready to transmit my work tool to the benefit of the greatest number.