Technical Installing new seats with lombar adjustment

[anyzunstudios]

Hello everyone, I'm trying new seats with lombar adjustment, and my car does not has this feature previusly, so I want to adapt the system to make it work.

My question is, does lombar adjustment is managed with CAN BUS commands to enable it? or is analog system?

Thanks in advance!

 

[Bernievarian]

Hi,

the lomlbar adjust is analog, it uses a inverter relay in the boot module...

Regards, Bernie


If someone here helped You fix or understand your issue, hit the thanks button, it's free !!

 

[anyzunstudios]

Hi,

the lomlbar adjust is analog, it uses a inverter relay in the boot module...

Regards, Bernie


If someone here helped You fix or understand your issue, hit the thanks button, it's free !!

Hi, Thanks for your reply!
What are you meaning with "inverter relay"? Is it a relay with two positions?
Another question is where is the electronic diagram? I mean, I have "elearn" and I have readen what you have sent me, but I'm afraid to do bad connections and then blow up the AirBag. It is a bit confusing, so I want to know what pins are required to make seat move.

Thank you!

 

[Bernievarian]

Hi, shouldn't have written inverter relay but inverter switch (I067 on the drawing), so you need the switch under the arm rest, a lombar adjustable seat, positive (fused) and ground... Pins 7 & 8 at the seat coupler are the lombar motor connections other # you can find on the attached diagram.

Regards, Bernie

 

[anyzunstudios]

Hi, shouldn't have written inverter relay but inverter switch (I067 on the drawing), so you need the switch under the arm rest, a lombar adjustable seat, positive (fused) and ground... Pins 7 & 8 at the seat coupler are the lombar motor connections other # you can find on the attached diagram.

Regards, Bernie

So pins 7 and 8 are for moving forward or backwards, and others two are for powering motor, right? Thanks!

 

[Bernievarian]

D070 is the seat connector, so pins 7 & 8 are for the lombar adjustment, they are connected to the inverter switch located under the arm rest... At least that's how I read the drawing ... Anyone ??

Regards, Bernie

 

[anyzunstudios]

D070 is the seat connector, so pins 7 & 8 are for the lombar adjustment, they are connected to the inverter switch located under the arm rest... At least that's how I read the drawing ... Anyone ??

Regards, Bernie

But my question is for what are pins 9 and 10? I need to connect them to battery or they are not needed for lumbar system? Because eLearn says that one of them is for dashboard ground (negative) and other is for Luggage Compartment Junction Unit (I don't know what it is, I think is Positive) and I don't get it, I want to be sure about that, avoiding damaging my seat :S

I have attached a photo of seat connector Pinout.

Thanks in advance!

 

[Bernievarian]

Pins 7 & 8 of the seat connector are connected directly to pins 3 & 4 of the control switch.

The control switch is fed by positive from the trunk diverting box (Luggage compartment junction unit) thru a relay and a dedicated fuse and in negative from the dashboard grounding (C015). The trunk box relay is ignition (key on) operated and de-activated when cranking, as a lot of other electrical devices on the car such as the radio...

Depending the switch position (center is neutral) the lumbar adjustment motor will receive + and - in one way or the other, so going backward or forward.
The other pins on the connector are for airbag sensor and airbag itself (if seat equiped with). Regarding the extra one connecting to the trunk box I have no clue, but it's more likely feeding + to ??

One need to digg in the eLearn to find out...

So to make it short: you can power and ground the control switch directly from positive (fused) and earth and connect directly to pins 7 & 8 on the seat connector without disturrbing any body ECU.
I doubt you'd play with the lumbar adjustment while cranking... (but who knows ;-)

Regards, Bernie



Regards

 

[Bernievarian]

Digged a bit, pin 9 of seat connector is receiving positive from the trunk box, this one is for electric heated seats ...

Regards, Bernie

 

[Bernievarian]

And pins 1, 2 & 3 are for the seat side air bag ...

 

[anyzunstudios]

Digged a bit, pin 9 of seat connector is receiving positive from the trunk box, this one is for electric heated seats ...

Regards, Bernie

Yes!! Thank you! Now I understand you perfectly! And yes, 9 and 10 are for heater seats (were are provided) and the car where I got those seats did not have any buttons for heater, that they must be at same place than lumbar buttons, so I dont know if this seat has also heater, but not buttons to enable it (in that case, I have to install buttons) or just dummy cables on seat (that I dont think that Fiat added dummy wires just for fun). I will try to check it and then I will answer here hehehe

Thank you again for you really heplful help man ?

Regards,
Julio

 

[Bernievarian]

My pleasure Julio !

I thanked you here since I couldn't on your other post with the DLR lights :-(

Regards, Bernie

 

[anyzunstudios]

My pleasure Julio !

I thanked you here since I couldn't on your other post with the DLR lights :-(

Regards, Bernie

Hahaha no problem, thank you, I hope you'll understand my explanation. I dont know if here you can share URLs from stores or external URLs, if you want the links for buying any of them, I'll share you in private message ?

 

[Bernievarian]

Hola Julio, yes please , send PM ...

Regards, Bernie

 

[anyzunstudios]

Hola Julio, yes please , send PM ...

Regards, Bernie

Done!

 

[anyzunstudios]

Hola Julio, yes please , send PM ...

Regards, Bernie

Finally it is working! First, I tested just powering wires with car battery charger directly to the seat, but cables got really hot but nothing happened. Then, I powered up switches system and then wiring everything up, and power goes from switches to seat, no extra power needed! I dont know why with switches works and directly doesn't. Well, I got it working, so next thing I will do is to check what the other wires do (9 and 10).

I have attached a video working:

[ame]https://youtu.be/vNXe88sFvws[/ame]

Thanks a lot for your help!

Regards,
Julio.

 

[Bernievarian]

Well done !

Regarding pins 9 & 10 on seat connector C070, they are supposed to be connected to the heating pads in the seat's back and bottom. If no pads, it could be that they're using kind of standard loom (one fits all)... Curious to see what You'll find ;-)

Regards, Bernie

 

[anyzunstudios]

Well done !

Regarding pins 9 & 10 on seat connector C070, they are supposed to be connected to the heating pads in the seat's back and bottom. If no pads, it could be that they're using kind of standard loom (one fits all)... Curious to see what You'll find ;-)

Regards, Bernie

In my case, there is pin 9 and 10 too, but as you can see at my video, there is not any switches to turn it on, and I saw that it is where they supposed to be, so maybe is a hidden feature that I need to enable making my own switches hehehe

Regards,
Julio