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Home >> Toyota >> 2002 >> Highlander Limited, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostics >> Problem Symptoms Table >> Windows Cannot Be Operated Via Regulator Switch In Each Seat >> Inspection Procedure
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Inspection Procedure

  1. Check Fuse 
    1. Check whether the regulator switch fuses [P front door 25 A, D rear door 20 A, P rear door 20 A] of inoperative seats are normal.
      NOTE:
      • If the fuse for the passenger side door is normal, proceed to [OK-A].
      • If the fuse for the rear RH and LH doors is normal, proceed to [OK-B].
      • If the fuse for the passenger's side door is defective, proceed to [NG-A].
      • If the fuse for the rear RH door is defective, proceed to [NG-B].
      • If the fuse for the rear LH door is defective, proceed to [NG-C].
    1. OK-B : Go To Step   6  , (Check Power Window Regulator Switch Assembly Rear).
    2. OK-A : Go To Step 2  , (Check Power Window Regulator Switch Assembly).
    3. NG-A : Replace Fuse (Passenger Side Front Door 25 A) 
    4. NG-B : Replace Fuse (Driver's Side Rear Door 20 A) 
    5. NG-C : Replace Fuse (Passenger Side Rear Door 20 A) 
  2. Check Power Window Regulator Switch Assembly 
    1. Inspect the power source voltage.
      1. Disconnect the regulator switch connector.
      2. Check the voltage between terminal 7 (B) of the regulator switch vehicle's side connector and the body ground.
        Fig 1: Identifying Power Window Regulator Switch Terminal 7 (B)
        G01114143Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard: 10 - 14 V With Ignition Switch ON 
    1. OK: Go To Step 3  , (Check Power Window Regulator Switch Assembly).
    2. NG: Repair Or Replace Harness And Connector 
  3. Check Power Window Regulator Switch Assembly 
    1. Inspect the GND.
      1. Disconnect the regulator switch connector.
      2. Check the continuity between terminal 1 (E) of the regulator switch vehicle's side connector and the body ground.
        Fig 2: Identifying Power Window Regulator Switch Terminal 1(E)
        G01114144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard: Continuity (Constant) 
    1. OK: Go To Step 4  , (Check Power Window Regulator Motor Assembly RH).
    2. NG: Repair Or Replace Harness And Connector 
  4. Check Power Window Regulator Motor Assembly - RH 
    1. Inspect the motor operation.
      1. Disconnect the regulator switch connector.
      2. Inspect the door glass operation when the battery voltage is applied between terminals 3 (U) and 6 (D) of the regulator switch vehicle's side connector.
        Fig 3: Identifying 3(U) & 6(D) Power Window Motor Terminals
        G01114146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 4: Reviewing Power Window Motor Terminal Information (1 Of 2)
      G01114145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Replace Power Window Regulator Switch Assembly 
    2. NG: Go To Step 5  , (Inspect Power Window Regulator Motor Assembly RH).
  5. Inspect Power Window Regulator Motor Assembly - RH 
    1. Inspect operation of the front LH power window regulator motor assembly.
      1. Check that the motor operates smoothly when the battery voltage is applied to each terminal of the connector.
        Fig 5: Checking Power Window Motor Operation
        G01114148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 6: Reviewing Power Window Motor Terminal Information (2 Of 2)
      G01114147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect operation of PTC inside the power window regulator motor.
      NOTE: Work must be done with the power window regulator and door glass installed to the vehicle.
      1. Set a electrical tester DC400A probe to the wire harness of terminal 1 or 2.
        NOTE: Match the arrow mark of the probe with the current direction.
      2. Close the door glass fully.
      3. When approximately 60 seconds have elapsed after the door glass is fully closed, check the changing time of the current, from 16 - 34 A into 1 A, when the power window regulator switch is turned UP once again. (inspection of current cut-off)

        Standard: Approximately 4 - 90 Seconds 

      4. When approximately 60 seconds have elapsed after the inspection of the current cut-off, check that the door glass goes down when the power window regulator switch is turned DOWN.
    1. OK: Repair Or Replace Harness And Connector 
    2. NG: Replace Power Window Regulator Motor Assembly - RH 
  6. Check Power Window Regulator Switch Assembly Rear 
    1. Inspect the power source voltage.
      1. Disconnect the regulator switch connector.
      2. Check the voltage between terminals 7 (B) of the regulator switch vehicle's side connector and the body ground.
        Fig 7: Identifying Power Window Regulator Switch Terminal 7(B)
        G01114149Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard: 10 - 14 V With Ignition Switch ON 
    1. OK: Go To Step 7  , (Check Power Window Regulator Switch Assembly Rear.)
    2. NG: Repair Or Replace Harness And Connector 
  7. Check Power Window Regulator Switch Assembly Rear 
    1. Inspect the GND.
      1. Disconnect the regulator switch connector.
      2. Check the continuity between terminal 1 (E) of the regulator switch vehicle's side connector and the body ground.
        Fig 8: Identifying Power Window Regulator Switch Terminal 1(E)
        G01114150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Standard: Continuity (Constant) 
    1. OK-A : Go To Step 8  , (Check Power Window Regulator Motor Assembly RH).
    2. OK-B : Go To Step   10  , (Check Power Window Regulator Motor Assembly LH).
    3. NG: Repair Or Replace Harness And Connector 
  8. Check Power Window Regulator Motor Assembly - RH 
    1. Inspect the motor operation.
      1. Disconnect the regulator switch connector.
      2. Inspect the door glass operation when the battery voltage is applied between terminals 3 (U) and 6 (D) of the regulator switch vehicle's side connector.
        Fig 9: Identifying 3(U) & 6(D) Power Window Motor Terminals
        G01114152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 10: Reviewing Power Window Motor Terminal Information (1 Of 2)
      G01114151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Replace Power Window Regulator Switch Assembly Rear 
    2. NG: Go To Next Step  .
  9. Inspect Power Window Regulator Motor Assembly - RH 
    1. Inspect operation of the rear RH power window regulator motor assembly.
      1. Check that the motor operates smoothly when the battery voltage is applied to each terminal of the connector.
        Fig 11: Checking Power Window Motor Operation
        G01114154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 12: Reviewing Power Window Motor Terminal Information (2 Of 2)
      G01114153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect operation of PTC inside the power window regulator motor.
      NOTE: Work must be done with the power window regulator and door glass installed to the vehicle.
      1. Set a electrical tester DC400A, probe to the wire harness of terminal 1 or 2.
        NOTE: Match the arrow mark of the probe with the current direction.
      2. Close the door glass fully.
      3. When approximately 60 seconds have elapsed after the door glass is fully closed, check the changing time of the current, from 16 - 34 A into 1 A, when the power window regulator switch is turned UP once again. (inspection of current cut-off)

        Standard: Approximately 4 - 90 Seconds 

      4. When approximately 60 seconds have elapsed after the inspection of the current cut-off, check that the door glass goes down when the power window regulator switch is turned DOWN.
    1. OK: Repair Or Replace Harness And Connector 
    2. NG: Replace Power Window Regulator Motor Assembly RH 
  10. Check Power Window Regulator Motor Assembly - LH 
    1. Inspect the motor operation.
      1. Disconnect the regulator switch connector.
      2. Inspect the door glass operation when the battery voltage is applied between terminals 3 (U) and 6 (D) of the regulator switch vehicle's side connector.
        Fig 13: Identifying 3(U) & 6(D) Power Window Motor Terminals
        G01114156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 14: Reviewing Power Window Motor Terminal Information (1 Of 2)
      G01114155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Replace Power Window Regulator Switch Assembly Rear 
    2. NG: Go To Next Step  .
  11. Inspect Power Window Regulator Motor Assembly - LH 
    1. Inspect operation of the rear LH power window regulator motor assembly.
      1. Check that the motor operates smoothly when the battery voltage is applied to each terminal of the connector.
        Fig 15: Checking Power Window Motor Operation
        G01114158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 16: Reviewing Power Window Motor Terminal Information (2 Of 2)
      G01114157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect operation of PTC inside the power window regulator motor.
      NOTE: Work must be done with the power window regulator and door glass installed to the vehicle.
      1. Set a electrical tester DC400A probe to the wire harness of terminal 1 or 2.
        NOTE: Match the arrow mark of the probe with the current direction.
      2. Close the door glass fully.
      3. When approximately 60 seconds have elapsed after the door glass is fully closed, check the changing time of the current, from 16 - 34 A into 1 A, when the power window regulator switch is turned UP once again. (inspection of current cut-off)

        Standard: Approximately 4 - 90 seconds 

      4. When approximately 60 seconds have elapsed after the inspection of the current cut-off, check that the door glass goes down when the power window regulator switch is turned DOWN.
    1. OK: Repair Or Replace Harness And Connector 
    2. NG: Replace Power Window Regulator Motor Assembly - LH 
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