Volvo V/S90 front seats retrofit/standalone.

[oleelstad]

So what did you guys do with the passenger seats? Like the one I posted above it doesn't seem to have the canbus connections. Or maybe I am mistaken.

[kaptinkeiff]

So what did you guys do with the passenger seats? Like the one I posted above it doesn't seem to have the canbus connections. Or maybe I am mistaken.

The passenger seat should have canbus too, high pin 30, low 29. The passenger doesn't have anything in pin 31 IIRC - but should be identical otherwise!

If you're still struggling to find it, please pop a photo of the plug on the seat, will compare

[oleelstad]

So what did you guys do with the passenger seats? Like the one I posted above it doesn't seem to have the canbus connections. Or maybe I am mistaken.

The passenger seat should have canbus too, high pin 30, low 29. The passenger doesn't have anything in pin 31 IIRC - but should be identical otherwise!

If you're still struggling to find it, please pop a photo of the plug on the seat, will compare

See attachment.  

   

[kaptinkeiff]

So what did you guys do with the passenger seats? Like the one I posted above it doesn't seem to have the canbus connections. Or maybe I am mistaken.

The passenger seat should have canbus too, high pin 30, low 29. The passenger doesn't have anything in pin 31 IIRC - but should be identical otherwise!

If you're still struggling to find it, please pop a photo of the plug on the seat, will compare

See attachment.  

What the heck! Are they cloth? What year and what model are they from, I will dive into the wiring diagram?

And if you give pins 3 & 16 power, and pin 1 negative, it doesn't power on?

[oleelstad]

Nope nothing. They are from a 2016 model,  they are in the first post in this thread.

[kaptinkeiff]

Nope nothing. They are from a 2016 model,  they are in the first post in this thread.

Sorry for the delay in getting back to you, I finally found the wiring diagram that describes your seats

Yours appear to be the ones classified as "10A Passenger Seat Internal Harness High LHD"

I'm not sure why none of the other wiring diagrams show this un-canbussed passenger seat, but it matches with yours from what I can see.

There is only a lin bus connection to your seat...I presume the seat must be expecting a wake command from it, potentially?

The battery saver (pin 16?) no longer looks to exist, too, but pin 11 is the one used for the lin bus, I'm not sure if there are any easy tricks to get it live :/ 

Someone with a working passenger seat may need to record the lin command it's sent, unless there's some other way someone knows about? Really really annoying though, not sure why on earth it's like that!

The schematic file to find is called 

Aftermarket Wiring Diagrams CMA MY24
SJ1001860

I believe I found it from somewhere else on this forum, I downloaded quite a few before finding it.

[oleelstad]

So LIN is a completely seperate system?  Damnit, that's going to suck.

[IMAY2023]

Nope nothing. They are from a 2016 model,  they are in the first post in this thread.

Sorry for the delay in getting back to you, I finally found the wiring diagram that describes your seats

Yours appear to be the ones classified as "10A Passenger Seat Internal Harness High LHD"

I'm not sure why none of the other wiring diagrams show this un-canbussed passenger seat, but it matches with yours from what I can see.

There is only a lin bus connection to your seat...I presume the seat must be expecting a wake command from it, potentially?

The battery saver (pin 16?) no longer looks to exist, too, but pin 11 is the one used for the lin bus, I'm not sure if there are any easy tricks to get it live :/ 

Someone with a working passenger seat may need to record the lin command it's sent, unless there's some other way someone knows about? Really really annoying though, not sure why on earth it's like that!

The schematic file to find is called 

Aftermarket Wiring Diagrams CMA MY24
SJ1001860

I believe I found it from somewhere else on this forum, I downloaded quite a few before finding it.

No, you are not correct at all. 
With CMA modules,  the seat heating / ventilation module is embedded into the seat controller. 
The LIN you see in the diagram goes to the CCM and has nothing to do with the wakeup.  Check out page 1E_LIN_Comfort. 

The seat controller is a CAN BUS and a slave LIN slave unit. It wakes up with the can bus message from the CEM. 
Since the seat module has completely changed, most likely the CAN bus message for wake up has changed too. The messages I shared in this forum are from an SPA 2019 car.

[kaptinkeiff]

Nope nothing. They are from a 2016 model,  they are in the first post in this thread.

Sorry for the delay in getting back to you, I finally found the wiring diagram that describes your seats

Yours appear to be the ones classified as "10A Passenger Seat Internal Harness High LHD"

I'm not sure why none of the other wiring diagrams show this un-canbussed passenger seat, but it matches with yours from what I can see.

There is only a lin bus connection to your seat...I presume the seat must be expecting a wake command from it, potentially?

The battery saver (pin 16?) no longer looks to exist, too, but pin 11 is the one used for the lin bus, I'm not sure if there are any easy tricks to get it live :/ 

Someone with a working passenger seat may need to record the lin command it's sent, unless there's some other way someone knows about? Really really annoying though, not sure why on earth it's like that!

The schematic file to find is called 

Aftermarket Wiring Diagrams CMA MY24
SJ1001860

I believe I found it from somewhere else on this forum, I downloaded quite a few before finding it.

No, you are not correct at all. 
With CMA modules,  the seat heating / ventilation module is embedded into the seat controller. 
The LIN you see in the diagram goes to the CCM and has nothing to do with the wakeup.  Check out page 1E_LIN_Comfort. 

The seat controller is a CAN BUS and a slave LIN slave unit. It wakes up with the can bus message from the CEM. 
Since the seat module has completely changed, most likely the CAN bus message for wake up has changed too. The messages I shared in this forum are from an SPA 2019 car.

Look at his plug, his seat does not have any CAN wires going to it? That's plug block 506. How can he provide it a wake up command?

[IMAY2023]

Look at his plug, his seat does not have any CAN wires going to it? That's plug block 506. How can he provide it a wake up command?

First of all oleelstad wrote below in his first post. 

I recently bought a few front seats from a Volvo S90 2018 model thinking I would put these in my patrol. Having worked with seats from earlier cars etc I thought this would be straight forward. However that is not the case.

So the wiring you mentioned

Aftermarket Wiring Diagrams CMA MY24
SJ1001860

is wrong!  It's for XC40 which is very different. The seat controller on those are not CAN BUS units. They are LIN bus slaves of the CCM.  
Besides, if you look closely to the pictures of the seats in the initial post of  oleelstad on the first page of this thread, those seats are manual! There is a handle beneath the seats! 

So, there is no seat controller to wake up! The wires you see in the picture of the connector are for the airbag, seatbelt, seat occupant sensor, the lamp under the seat and ground. I don't even see the power wire "red same gouge as ground " for heated seats.