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Section 593 (Power Transistor (For Rear A/C)): Inspection

WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE REAR SEAT OUTER BELT FLOOR ANCHORS 
  2. REMOVE BACK DOOR SCUFF PLATE 
  3. REMOVE REAR DOOR SCUFF PLATE RH 
  4. REMOVE REAR WINDOW SIDE GARNISH 
  5. REMOVE REAR QUARTER TRIM PANEL RH 
  6. REMOVE REAR POWER TRANSISTOR 
    1. Disconnect the connector.
    2. Remove the 2 screws and rear power transistor.
      Fig 1: Removing Rear Power Transistor
      G02852775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSPECT POWER TRANSISTOR OPERATION 
    Fig 2: Inspecting Power Transistor Operation
    G02852776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Connect the positive (+) lead to terminal 1 through a 12 V - 3.4 W test bulb and negative (-) lead to terminal 4.
    2. Check the test bulb lights up when another positive (+) lead is connected to terminal 2 through a 12 V - 3.4 W test bulb.

    If operation is not as specified, replace the power transistor.

  8. INSPECT POWER TRANSISTOR RESISTANCE 
    Fig 3: Inspecting Power Transistor Resistance
    G02852777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Measure resistance between terminals 3 and 4.

    Standard resistance: 2.0 - 2.4 kΩ. 

    If resistance is not as specified, replace the power transistor.

  9. INSTALL REAR POWER TRANSISTOR 
  10. INSTALL REAR QUARTER TRIM PANEL RH 
  11. INSTALL REAR WINDOW SIDE GARNISH 
  12. INSTALL REAR DOOR SCUFF PLATE RH 
  13. INSTALL BACK DOOR SCUFF PLATE 
  14. INSTALL REAR SEAT OUTER BELT FLOOR ANCHORS 
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