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Lumbar Support Switch Circuit

  1. Disconnect the switch connector and connect the seat wiring harness to the floor wiring harness.
  2. Inspect the connector on the wiring harness side. See CONNECTOR IDENTIFICATION . See INSPECTING LUMBAR SUPPORT SWITCH CIRCUIT  table. If the circuit is not as specified, inspect the circuits connected to other parts.
    INSPECTING LUMBAR SUPPORT SWITCH CIRCUIT

    Tester Connection Condition Specified Condition
    3 - Ground Constant Continuity
    4 - Ground Constant B+ Voltage
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