Inspection Procedure

1. Remove the PWR SEAT fuse from driver side J/B.
2. Measure the resistance.

   Standard: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step. 

1. Disconnect the power seat switch connector.
2. Measure the resistance of each terminal, as shown in Fig 1 and Fig 2.
   Fig 1: Inspecting Power Seat Switch Assy

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   Standard: 

   Fig 2: Power Seat Switch Assy. Tester Connection Table

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   NG: REPLACE POWER SEAT SWITCH ASSY (See  OVERHAUL  ) 

   OK: Go to next step. 

1. Measure the voltage of each terminal of the wire harness side connectors.

   Standard: 

   Fig 3: Harness And Connector (Power Source) Voltage Table

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2. Measure the resistance of each terminal, as shown in Fig 5 and Fig 4.

   Standard: 

   Fig 4: Harness And Connector (Power Source) Resistance Table

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   Fig 5: Inspecting Harness And Connector (Power Source)

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   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step. 

1. Check that the motor rotates smoothly when the battery is connected to the lumbar support adjuster motor connector terminals.
   Fig 6: Inspecting Power Seat Motor Assy (Lumbar) P18

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   Standard: 

   Fig 7: Power Seat Motor Assy (Lumbar) Measurement Condition Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE POWER SEAT MOTOR ASSY (See  OVERHAUL  ) 

   OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SEAT SWITCH ASSY - POWER SEAT MOTOR)