Heated Glass Element: Testing and Inspection
REAR WINDOW DEFOGGER SYSTEMINSPECTION
1. CHECK SYSTEM
NOTE: Rear window defogger system can be customized on the Subaru Select Monitor, when the body integrated unit customize setting {A/C ECM setting} is "support".
2. CHECK WITH SUBARU SELECT MONITOR
CAUTION: Check whether the "Rr defogger op. mode" setting is in initial setting or customize setting before performing inspection.
1. Check the input signal when the rear window defogger switch is operated using Subaru Select Monitor.
1. Prepare the Subaru Select Monitor. [Ref. to PREPARATION TOOL, General Description.]
2. Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor".
3. On �System Selection Menu� display, select {Integ. unit mode}.
4. Select the {R defogger output} on {Current Data Display & Save}.
5. Check the displayed data (ON/OFF) by operating the rear window defogger switch.
2. Check the operation with rear window defogger switch ON.
- When customize setting is set as �Continuous�, it is normal if the 15-minute operation and 2-minute stop repeats.
- When customize setting is �Normal�, it is normal if the operation lasts for 15 minutes and then turns OFF.
3. When the operation in 2) above fails, replace the body integrated unit.
3. HEAT WIRE INSPECTION
CAUTION: Use a dry soft cloth to wipe off dirt on the glass along the heat wires with care not to damage the heat wires.
1. Inspect the following inspection tools.
- Liquid crystal thermograph sheet (size: approx. 300 � 300 mm (11.8 x 11.8 in), heat sensing temperature: approx. 35 - 40 °C (95 - 104 °F))
- Aluminum foil
2. Turn the ignition switch to ON.
3. Turn the defogger switch to ON.
4. Push the liquid crystal thermograph sheet on to the outer surface of the rear glass.
NOTE: Use the liquid crystal thermograph sheet to each section divided by parting lines.
5. Check the color of the liquid crystal thermograph sheet to identify the faulty heat wire.
NOTE:
- If the response of the liquid crystal thermograph sheet is not sufficient, try the inspection on the inner surface of the glass.
- The time until color change depends on the glass surface temperature.
6. Wrap the aluminum foil around the tip of each tester probe and push them on to the faulty heat wire.
7. 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.
8. Slowly move the negative (-) tester probe along the heat wire. While moving the tester probe, find an open point where the voltage reading changes from 0.
9. Repair the heat wire that determines the place of the open circuit. [Ref. to REPAIR, Rear Window Defogger System.]