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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Body & Frame >> Seats >> Seats - Seat Switches, Motors, Lumbar & Heater Assemblies >> SEAT CLIMATE CONTROL SWITCH (for Rear Side) >> Inspection

SEAT CLIMATE CONTROL SWITCH (for Rear Side): Inspection

  1. INSPECT CURTAIN SWITCH ASSEMBLY 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Identifying Curtain Switch Connectors
      G04953187Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      CURTAIN SWITCH ASSEMBLY

      Tester Connection Switch Condition Specified Condition
      17 (BVR) - 20 (LVR) Switch ON (LH), COLD HI to HOT HI 1 Ω to 5 kΩ

      HINT:

      As the dial is being turned, the resistance changes gradually.

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

    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      CURTAIN SWITCH ASSEMBLY VOLTAGE

      Tester Connection Switch Condition Specified Condition
      Tester positive (+) lead → 18 (SW2)
      Tester negative (-) lead → 5 (SWE1)
      ON Below 1.5 V

      HINT:

      As the circuit has a diode, perform the measurement with the tester in diode mode.

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

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      CURTAIN SWITCH ASSEMBLY RESISTANCE

      Tester Connection Switch Condition Specified Condition
      17 (BVR)-11 (RVR) Switch ON (RH), COLD HI to HOT HI 1 Ω to 5 kΩ

      HINT:

      As the dial is being turned, the resistance changes gradually.

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

    4. Measure the voltage according to the value(s) in the table below.
      Fig 2: Identifying Rear Seat Climate Control Switch Connectors
      G04953188Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage 

      CURTAIN SWITCH ASSEMBLY VOLTAGE

      Tester Connection Switch Condition Specified Condition
      Tester positive (+) lead → 13 (SW3)
      Tester negative (-) lead → 5 (SWE1)
      ON Below 1.5 V

      HINT:

      As the circuit has a diode, perform the measurement with the tester in diode mode.

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

    5. Check that the climate control switch illuminates.

      OK 

      CLIMATE CONTROL SWITCH ILLUMINATES

      Measurement Condition Specified Condition
      Battery positive (+) → 6 (ILL+)
      Battery negative (-) → 14 (ILL-)
      Illuminates

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