Rear Window Defogger

REAR WINDOW DEFOGGER

INSPECTION

1. CHECK WITH SUBARU SELECT MONITOR

CAUTION: Check that the rear window defogger timer 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 kit.
2. Turn the ignition switch to ON (engine OFF), and start "PC application help for Subaru Select Monitor".
3. On the display screen, select the {Integ. Unit mode}.
4. Select the {Current Data Display & Save}.
5. Display the data of rear window defogger switch.

2. After rear defogger switch is set to ON, check whether it turns to OFF in 15 minutes or repeats 15 minutes operation and 2 minutes stop?
3. When it becomes OFF on above 2), it is normal. When it repeats 15 minutes operation and 2 minutes stop, replace body integrated unit.

2. HEAT WIRE INSPECTION

CAUTION: Use a dry and soft cloth when wiping dirt off the glass. Move the cloth along the heat wire to avoid damaging it.

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 with DC voltmeter.

Standard voltage:
Approx. 6 V

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.