LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> LS 460L >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> How To Proceed With Troubleshooting
April 5, 2026: LEMON Manuals is launched! Read the announcement.

How To Proceed With Troubleshooting

HINT:

  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

    Standard voltage: 

    11 to 14 V 

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

  3. CHECK FOR DTC (ELECTRIC POWER CONTROL SYSTEM)* 
    1. Using the Techstream, check if the electric power control system is functioning normally.

      Result: 

      RESULT TABLE

      Result Proceed to
      DTC B22B3 is not output A
      DTC B22B3 is output B

    B: GO TO ELECTRIC POWER CONTROL SYSTEM  (See DIAGNOSTIC TROUBLE CODE TABLE )

    A: Go to next step 

  4. CHECK FOR DTC* 
    1. Check for DTCs and note any codes that are output.
    2. Delete the DTC.
    3. Recheck for DTCs. Based on the DTCs output in the first step, try to force output of the same DTC by simulating the symptoms indicated by the DTC.

      Result: 

      RESULT TABLE

      Result Proceed to
      No DTCs output A
      DTC B2311 is output B
      DTC B2312 is output B
      DTC B2313 is output B
      CAN communication system DTC is output C
      LIN communication system DTC is output D

    B: GO TO  DIAGNOSTIC TROUBLE CODE TABLE  

    C: GO TO CAN COMMUNICATION SYSTEM  (See CAN COMMUNICATION SYSTEM )

    D: GO TO LIN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to next step 

  5. PROBLEM SYMPTOMS TABLE 

    Result: 

    RESULT TABLE

    Result Proceed to
    Fault not listed in problem symptoms table A
    Fault listed in problem symptoms table B

    B: GO TO STEP   7 

    A: Go to next step 

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. See OPERATION CHECK 
    2. See TERMINALS OF ECU 
    3. See DATA LIST/ACTIVE TEST 
  7. REPAIR OR REPLACE 

    Result: 

    RESULT TABLE

    Result Proceed to
    Door window regulator and power window regulator motor assembly is replaced or removed/installed. A
    Door window regulator and power window regulator motor assembly is not replaced or removed/installed. B

    B: GO TO STEP   9 

    A: Go to next step 

  8. RESET POWER WINDOW MOTOR 
    1. If the power window master switch AUTO light is blinking, reset the power window motor (see INITIALIZATION  ).
  9. CONFIRMATION TEST 

    NEXT: END