Hi guys, I have done a search but to no avail. The passenger seat inflates no problem, but the driver seat doesn't and there is no sound of air leak. What diverts the air to whichever seat requires air since there is only one air pipe from the motor?
Thank you

 

if you can hear the pump motor running under the driver's seat when trying to inflate the bags in the driver's seat, the bags may be leaking. If you cant hear anything, then maybe the driver's seat switches are bad or oxidized.

the diversion of air takes place in a valve unit, has purple, blk/wht and brown wires plus the air lines going to it.

I'd start with the switch, work myself in. Sounds like your pump box is working and thats a big deal, since theyre near impossible to find.

 

Thanks, as a bit of an update the drivers seat does work intermittently. Firstly only lumbar works then it will stop and only the bolsters work, never both and then nothing at all.