Heat Wire Inspection
CAUTION:
When wiping off the stain on glass with cloth, use a dry and soft cloth and move it in the direction of the heat wire extension to avoid damage to the heat wire.
- Prepare the following checking items.
- Liquid crystal thermograph sheet (approximate size: 300 x 300 mm (11.8 x 11.8 in) and thermal temperature: 35 - 40°C (95 - 104°F))
- Aluminum foil
- Turn the ignition switch to ON.
- Turn the defogger switch to ON.
- Push the liquid crystal thermograph sheet from the outside of the glass.NOTE: Use the liquid crystal thermograph sheet every range it is separated with the separate line.
- Determine the faulty heat wire by checking the color of the liquid crystal thermograph sheet.
Liquid crystal thermograph sheet Criteria Change occurred (red → blue) Normal No change (black) Open NOTE:- Check from the inside of the glass - rear gate if the response of liquid crystal thermograph sheet is not good.
- The time for the color change may differ depends on the surface temperature of the glass.
- Wrap a piece of aluminum foil around the tip of tester probe and press it against the heat wire with your finger.
- To both ends of the section that has been found to include an open in the step 5), apply the tester positive (+) probe and the negative (-) probe.
- Move the tester probe on the negative (-) side slowly along the heat wire. If voltage changes from zero while moving the tester probe, heat wire is open at the voltage change point.
- Repair the heat wire that determines the place of the open circuit. Refer to GLASS/WINDOWS/MIRRORS>REAR WINDOW DEFOGGER SYSTEM>REPAIR .