Toyota Celica 2000 Repair Manual page 878

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BODY ELECTRICAL
OEFOGGEfl
HINT:
!f there is approximately 1 0 V, the wire is broken between the
center of the wire and the positive ( +) end. If there is no voltage,
the wire is broken between the center of the wire and ground.
(d) Place the voltmeter positive {+) lead against the defogger
positive (+) terminal.
Place the voltmeter negative (-) lead with the foil strip
(e)
against the heat wire at the positive (+ ) terminal end and
slide it toward the negative (-) terminal end.
The point where the voltmeter deflects from zero to sever-
(f)
al V is the place where the heat wire is broken.
HINT:
If the heat wire is not broken, the voltmeter indicates 0 V at the
positive (+) end of the heat wire but gradually increases to about
1 2 V as the meter probe is moved to the other end.
SYSTEM
BE-57