Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1998 1998 Service Manual ELECTRICAL SECTION BODY ELECTRICAL SYSTEM MSA5TCD98L21294

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MSA5TCD98L21294


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                                          SERVICE PROCEDURE                                       [W13B3] 6-2
                                                                                        13. Rear Window Defogger


13. Rear Window Defogger
A: REMOVAL AND INSTALLATION
1. DEFOGGER SWITCH
1) Remove screws which secure meter visor.
2) Remove meter visor from instrument panel
while disconnecting connectors.
3) Remove rear window defogger switch from
meter visor.
4) Installation is in the reverse order of removal.

B: INSPECTION
1. DEFOGGER SWITCH
Move rear window defogger switch to each posi-
tion and check continuity between terminals.




                                                                                                       G6M0112



                                                                3. HEAT WIRES
                                                                1) Start the engine so that battery is being
                                                                charged.
                                                                2) Turn defogger switch to ON.
                                                                3) Check each heat wire at its center position for
                                                                discontinuity by setting direct current voltmeter.
                                                                Normal indication is about 6 volts.




                                            B6M0851A



2. DEFOGGER RELAY                                                                                      G6M0135

Check continuity between terminals as indicated in
table below, when connecting the battery to termi-
nal No. 1 and No. 3.
When current flows.     Between termi-   Continuity
                        nals No. 2 and   exists.
                        No. 4
When current does not   Between termi-   Continuity does
flow.                   nals No. 2 and   not exist.
                        No. 4
                        Between termi-   Continuity
                        nals No. 1 and   exists.
                        No. 3




                                                           25
6-2   [W13C0]                          SERVICE PROCEDURE
13. Rear Window Defogger


NOTE:                                                        2) Cut off slit on (used) thin film by 0.5 mm (0.020
When measuring voltage, wind a piece of tin foil             in) width and 10 mm (0.39 in) length.
around the tip of the tester probe and press the foil        3) Place the slit on glass along the broken wire,
against the wire with your finger.                           and deposit conductive silver composition
                                                             (DUPONT No. 4817) on the broken portion.




                                          G6M0136
                                                                                                      G6M0138

4) When tester indicates 12 volts when its probe             4) Dry out the deposited portion.
reaches point "A", a broken circuit occurs between           5) Inspect the repaired wire for continuity.
point "A" and the negative terminal. Slowly move
tester probe toward the negative terminal while
contacting it on heat wire to locate point where
tester indication changes abruptly (0 volts). This is
the point where a broken circuit occurs.
When tester indicates 0 volts when its probe
reaches point "A", a broken circuit occurs between
point "A" and the positive terminal. Locate a point
where tester indication changes abruptly (12 volts)
while slowly moving tester probe toward the posi-
tive terminal.




                                          G6M0137



C: REPAIR
1) Clean broken wire and its surrounding area.

                                                        26



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