Lumbar Inflate/Deflate

Lumbar inflate/deflate
Sliding the squab switch upwards when the seat power relay enable line is operating applies voltage to the lumbar pump. The lumbar pump inflates the lumbar bladder, increasing lumbar support. The lumbar pump and the normally closed lumbar deflate solenoid hold the air in the bladder. Sliding the squab switch downwards applies voltage to the deflate solenoid, venting the air in the lumbar bladder to atmosphere, decreasing lumbar support.