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Lumbar Switch: Inspection: Inspection

  1. INSPECT LUMBAR SWITCH ASSEMBLY (for Driver Side) 
      Fig 1: Lumbar Switch Assembly Connector End View
      GTY275786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      3 (H) - 5 (B) Hold Below 1 Ω
      1 (R) - 2 (E2)
      2 (E2) - 3 (H) Off
      2 (E2) - 1 (R)
      2 (E2) - 3 (H) Release
      1 (R) - 5 (B)

      If the result is not as specified, replace the lumbar switch.

      TEXT IN ILLUSTRATION

      *1 Hold Switch
      *2 Release Switch
      *a Component without harness connected
      (Lumbar Switch)
  2. INSPECT LUMBAR SWITCH ASSEMBLY (for Front Passenger Side) 
      Fig 2: Identifying Lumbar Switch Assembly Connector Terminals
      GTY275787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      1 (H) - 5 (B) Hold Below 1 Ω
      3 (R) - 2 (E2)
      1 (H) - 2 (E2) Off
      3 (R) - 2 (E2)
      1 (H) - 2 (E2) Release
      3 (R) - 5 (B)

      If the result is not as specified, replace the lumbar switch.

      TEXT IN ILLUSTRATION

      *1 Hold Switch
      *2 Release Switch
      *a Component without harness connected
      (Lumbar Switch)
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