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17.Rear Window Defogger
A: INSPECTION
1. WITH SUBARU SELECT MONITOR
CAUTION:
Check that the rear window defogger timer is in initial setting or customize setting before performing
inspection.
Step
1
CHECK INPUT SIGNAL TO BODY INTE-
GRATED MODULE.
Check the input signal when the rear window
defogger switch is operated using Subaru
Select Monitor.
1) Connect the Subaru Select Monitor to data
link connector.
2) Turn the ignition switch to ON.
3) Select the {Integ. unit} from the «Main
Menu».
4) Select the {Current Data Display & Save}.
5) Check the input signal when the rear win-
dow defogger switch is set to ON.
2. HEAT WIRE INSPECTION
CAUTION:
Use a dry and soft cloth when wiping stain off
on the glass. Move it along the heat wire to
avoid damage to 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.
(1)
(1) Tester probe
(2) Aluminum foil
(3) Heat wire
(4) Push
Rear Window Defogger
Does the rear defogger switch
turn to OFF in 15 minutes after
set to ON? Or does it repeat 15
minutes operation and 2 min-
utes stop?
(4)
(3)
(2)
GW-00076
GW-33
GLASS/WINDOWS/MIRRORS
Check
END.
4) Measure the voltage at heat wire center with DC
voltmeter.
Standard voltage:
Approx. 6 V
(1) Center of heat wire
Voltage
Approx. 6 V
Approx. 12 V or 0 V
NOTE:
• If the measured value is 12 volts, heat wire is
open between heat wire center and positive (+) ter-
minal of tester probe.
• If zero volt, heat wire is open between wire cen-
ter and ground.
Yes
No
Replace the body
integrated mod-
ule. <Ref. to SL-
44, REMOVAL,
Body Integrated
Module.>
(1)
GW-00077
Criteria
Normal
Open
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