Lexus IS250 · Service Manual BODY

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting

HINT:
  1. Use the following procedure to troubleshoot the defogger system.
  2. The intelligent tester should be used in step 4.


1.VEHICLE BROUGHT TO WORKSHOP
    NEXT

    2.INSPECT BATTERY VOLTAGE

      Standard voltage:
      11 to 14 V

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

    3.PROBLEM SYMPTOMS TABLE

      HINT:
      (Click here)

    NEXT

    4.OVERALL ANALYSIS AND TROUBLESHOOTING

    1. Terminals of ECU (Click here)

    2. Data List/Active Test (Click here)

    3. On-vehicle inspection (Click here)

    NEXT

    5.REPAIR OR REPLACE
      NEXT

      6.CONFIRMATION TEST
        NEXT

        ← SYSTEM DESCRIPTIONPROBLEM SYMPTOMS TABLE →