Circuit/System Verification

Ignition ON.
Verify that all power seat functions operate when being controlled by the S64 Seat Adjuster Switch.
- If any power seat function does not operate
  Refer to Power Seat Malfunction (Without Memory) Power Seat Malfunction (With Memory A45) .
- If all power seat functions operate
Verify the scan tool Driver Seat Lumbar Horizontal Switch parameter changes between Inactive and Forward/Rearward or when pressing the appropriate switch.
- If the parameter does not change
  Refer to Circuit/System Testing - Lumbar Support Switch Circuit Test.
- If the parameter changes
Verify the lumbar motor operates while operating the lumbar support switch in both directions.
- If the lumbar motor does not operate
  Refer to Circuit/System Testing - Lumbar Support Motor Circuit Test.
- If lumbar motor operates
All OK.