Circuit/System Verification

Ignition ON.
Verify the lumbar support pump turns ON when the lumbar support switch is pressed in the FORWARD direction. The upper and lower lumbar support bladders should inflate until the bladders are 100% inflated or the switch is released.
- If the bladders do not inflate
  Refer to Circuit/System Testing
- If the bladders inflate
Verify the upper and lower lumbar support bladders deflate when the lumbar REARWARD switch is pressed. The bladders should deflate until the bladders are 100% deflated or the switch is released.
- If the bladders do not deflate
  Refer to Circuit/System Testing
- If the bladders deflate
Verify the lumbar support pump turns ON and the upper lumbar support bladder starts to inflate when the lumbar switch is pressed in the UP direction. If the lower bladder is inflated it will deflate while the upper bladder inflates until the upper bladder is 100% inflated or switch is released.
- If the pump does not turn ON or the upper bladder does not inflate
  Refer to Circuit/System Testing
- If the pump turns ON and the upper bladder inflates
Verify the upper lumbar bladder starts to deflate while the lower lumbar bladder starts to inflate while the lumbar switch is pressed in the DOWN direction. The upper bladder should deflate until it is 100% deflated and the lower bladder should inflate until it is 100% inflated or the switch is released.
- If the upper bladder does not deflate or the lower bladder does not inflate
  Refer to Circuit/System Testing
- If the upper bladder deflates and the lower bladder inflates
All OK.