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Lumbar Switch: Inspection

  1. INSPECT FRONT POWER SEAT LUMBAR SWITCH LH 
    1. Measure the resistance according to the value(s) in the table below

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      4 (E) - 3 (R) HOLD Below 1 Ω
      2 (B) - 5 (H) HOLD Below 1 Ω
      4 (E) - 3 (R) OFF Below 1 Ω
      5 (H) -1 (E) OFF Below 1 Ω
      2 (B) - 3 (R) RELEASE Below 1 Ω
      5 (H) -1 (E) RELEASE Below 1 Ω

      If the result is not as specified, replace the switch

      Fig 1: Identifying Front Power Seat Lumbar Switch LH
      G05755062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT FRONT POWER SEAT LUMBAR SWITCH RH 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1 (GND) - 5 (R) HOLD Below 1 Ω
      2 (B) - 3 (H) HOLD Below 1 Ω
      1 (GND) - 5 (R) OFF Below 1 Ω
      3 (H) - 4 (E) OFF Below 1 Ω
      2 (B) - 5 (R) RELEASE Below 1 Ω
      3 (H) - 4 (E) RELEASE Below 1 Ω

      If the result is not as specified, replace switch.

      Fig 2: Identifying Front Power Seat Lumbar Switch RH
      G05755063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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