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Home >> Lexus >> 2003 >> ES 300 >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnosis >> Power Window Active Test (Driver's Door) >> Inspection Procedure

Inspection Procedure

  1. PERFORM ACTIVE TEST BY HAND-HELD TESTER 
    1. Data list (for MANUAL UP/DOWN switch)
      1. Using the hand-held tester, check that DTC B1221 is output when the switch is operated.

        HINT:

        Using DTC "B1221" which is a code when any of the master switch is constantly turned on, the MANUAL UP/DOWN switch operation can be monitored. If there is an output of DTC "B1221" when the switch is operated, the switch circuit can be considered normal.

        Standard [Driver side J/B (body ECU) (Switch condition)]: 

        Item Measurement Item/Range

        Item Measurement Item/Range (Display) Normal condition
        (Power window switch circuit on driver's door) Manual UP/DOWN switch signal/B1221 B1221: Manual UP/DOWN switch ON
        No output of B1221: Manual UP/DOWN switch OFF
    1. NG: Go to step   3 . 
    2. OK: Go to next step. 
  2. PERFORM ACTIVE TEST BY HAND-HELD TESTER 
    1. Active test
      1. Select the active test, and then check that the power window operates.

        HINT:

        During the active test, the hand-held tester sends signal to the power window regulator master switch (driver's door ECU) to drive the power window motor. If the power window operates, the power window motor itself and the wire harness between the power window motor and power window regulator master switch (driver's door ECU) is considered normal.

        Standard [Power window regulator master switch (driver's door ECU)]: 

        ITEM TEST DETAIL

        Item Test details
        P/W UP/DOWN Power window UP or DOWN
    2. Data list (for AUTO UP/DOWN switch)
      1. Perform a data list of the power window regulator master switch (driver's door ECU).

        HINT

        Data list displays on the hand-held tester the switch condition judged by the power window regulator master switch (driver's door ECU). If the display changes according to the actual switch operation, the switch itself and the wire harness between the switch and power window regulator master switch (driver's door ECU) is considered normal.

        Standard [Power window regulator master switch (driver's door ECU)]: 

        ITEM MEASUREMENT ITEM/RANGE

        Item Measurement Item/Range (Display) Normal condition
        P/W AUTO SW AUTO UP/DOWN switch signal/ON or OFF ON: AUTO UP/DOWN switch ON
        OFF: AUTO UP/DOWN switch OFF

        Judgement: 

        ACTIVE TEST

        Active test Data list Proceed to;
        OK OK A
        OK NG B
        NG OK C
        NG NG D
    1. A: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    2. B: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    3. C: GO TO FLOWCHART (POWER WINDOW REGULATOR MOTOR CIRCUIT) (See  POWER WINDOW REGULATOR MOTOR ASSY LH CIRCUIT (DRIVER'S DOOR)   ) 
    4. D: Go to next step. 
  3. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY 
    1. Replace the power window regulator master switch assy.
    2. Check the power window operation.
    1. OK: END 
    2. NG: GO TO FLOWCHART (POWER WINDOW REGULATOR MOTOR CIRCUIT) (See  POWER WINDOW REGULATOR MOTOR ASSY LH CIRCUIT (DRIVER'S DOOR)   ) 
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