WINDOW DEFOGGER WIRE ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT BACK DOOR GLASS (DEFOGGER WIRE)

    A001OKCC02
    *1 Defogger Wire
    *2 Tin Foil
    *3 Tester Probe

    Note


    • When cleaning the glass, wipe the glass along the wire using a soft, dry cloth. Take care not to damage the defogger wires.

    • Do not use detergents or glass cleaners that have abrasive ingredients.

    • When measuring voltage, wrap a piece of tin foil around the tip of the negative (-) tester probe and press the foil against the wire with your finger as shown in the illustration.


    1. Turn the power switch to ON (IG).

    2. Turn the defogger switch on.

    3. A001PK4C15
      *a Center
      A001Q9PC15
      *a Ground Side
      *b Foil Strip
      *c Approximately 10 V
      *d 0 V
      *e Broken Wire
      *f Auxiliary Battery Side

      Measure the voltage at the center of each defogger wire as shown in the illustration.

      Standard Voltage
      Voltage Criteria
      Approximately 5 V Wire is not broken
      Approximately 10 or 0 V Wire is broken

      Tech Tips

      If there is approximately 10 V, the wire may be faulty between the center of the wire and the wire end on the auxiliary battery side. If there is no voltage, the wire may be faulty between the center of the wire end and the wire end on the ground side.

    4. Place the voltmeter's positive (+) lead against the defogger wire on the auxiliary battery side.

    5. Place the voltmeter's negative (-) lead with the foil strip against the wire on the ground side.

    6. Slide the positive (+) lead from the auxiliary battery side to the ground side.

    7. The point where the voltage drops from approximately 10 V to 0 V is where the defogger wire is broken.

      Tech Tips

      If the defogger wire is not broken, the voltmeter indicates 0 V at the positive (+) end of the defogger wire and gradually increases to approximately 12 V as the meter probe moves to the other end.