8v_chris
Member
- Posts
- 62
- Location
- Northern Ireland
Now the cold is back on the cards I figured I’d better look into my heated seats, not in the summer when it was warm and comfortable working outside! This is in my 1995 SE V8 Gems money pit.
Long story short, I’ve had the seats out in the past and re soldered the broken wires in the seat pad and they were working fine for a time and one day stopped. Having checked the seats again at the white plugs underneath last night I’ve got continuity across the heat pads, all four, so I don’t think it’s a break in the wire. What I’m not seeing though is voltage to the pads. I assume that when the heated seats are switched on at the HEVAC I should then see 11-12v being fed in or is there some sort of a delay if the engine has only been switched on? I’ve tried on a number of combinations of AC on off, heat up down etc. I didn’t think heated seats would be prevented from working due a logged fault or even log a fault at all in the hevac so I’ve not scanned it with the nanocom.
The fuse (30 amp I believe) under the drivers seat is fine and has continuity across it but isn’t getting 12v when the heated seats are on, again, is this down to a delay if the engine has only turned on or has the relay failed in the engine bay? All other seat functions work fine in that the seats have full articulation etc from their motors, surely the same relay powers those too? I had wondered about the loom that sits in the footwells which I know causes problems for people but I spent a weekend putting all of those right about 18 months ago. I don’t know if the loom for the heated seats tracks through that or not though.
Realistically, where should I be looking next besides pulling out the drivers seat and going through the inside fuse box and engine bay relays? Also, which relay in the engine bay feeds the heated seats?
Thanks!
Long story short, I’ve had the seats out in the past and re soldered the broken wires in the seat pad and they were working fine for a time and one day stopped. Having checked the seats again at the white plugs underneath last night I’ve got continuity across the heat pads, all four, so I don’t think it’s a break in the wire. What I’m not seeing though is voltage to the pads. I assume that when the heated seats are switched on at the HEVAC I should then see 11-12v being fed in or is there some sort of a delay if the engine has only been switched on? I’ve tried on a number of combinations of AC on off, heat up down etc. I didn’t think heated seats would be prevented from working due a logged fault or even log a fault at all in the hevac so I’ve not scanned it with the nanocom.
The fuse (30 amp I believe) under the drivers seat is fine and has continuity across it but isn’t getting 12v when the heated seats are on, again, is this down to a delay if the engine has only turned on or has the relay failed in the engine bay? All other seat functions work fine in that the seats have full articulation etc from their motors, surely the same relay powers those too? I had wondered about the loom that sits in the footwells which I know causes problems for people but I spent a weekend putting all of those right about 18 months ago. I don’t know if the loom for the heated seats tracks through that or not though.
Realistically, where should I be looking next besides pulling out the drivers seat and going through the inside fuse box and engine bay relays? Also, which relay in the engine bay feeds the heated seats?
Thanks!
