Heated Glass Element: Testing and Inspection
The content of this article / image reflects Manual update # 18-146-10 dated 03/11/10.REAR WINDOW DEFOGGER SYSTEM
INSPECTION
1. SYSTEM INSPECTION
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.
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 {Rr 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: 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.
1. Turn the ignition switch to ON.
2. Turn the defogger switch to ON.
3. Wrap the tips of tester probe with aluminum foil to avoid damage to heat wire.
4. Measure the voltage at heat wire center (1) with
NOTE:
- If the measured value is 12 V, heat wire is open between heat wire center and positive (+) terminal of tester probe.
- If it is 0 V, the circuit is open between heat wire center and ground.
5. Connect the tester probe of positive lead of voltmeter to positive terminal of heat wire and move tester probe of negative lead along the heat wire up to the negative terminal end. If voltage changes from zero to several volts during movement of tester probe, heat wire is open at the voltage change point.