Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne be defsy insp
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BE-58
BODY ELECTRICAL - DEFOGGER SYSTEM
BE11L-02
INSPECTION
1. INSPECT DEFOGGER SWITCH CONTINUITY
Push the defogger switch and check that continuity exists be-
tween terminals 7 and 10.
If the continuity is not as specified, replace the integration con-
trol panel.
I09507
2. INSPECT DEFOGGER RELAY CONTINUITY
1 2 Tester connection Condition Specified condition
1-2 Constant Continuity
3 5
Apply B+ between
5 3-5 Continuity
terminals 1 and 2
2 1
3
If the continuity is not as specified, replace the relay.
N14863
3. INSPECT DEFOGGER WIRE
NOTICE:
S When cleaning the glass, use a soft and dry cloth, and
Tester Probe wipe the glass in the moving direction of the wire.
Heat Wire
Take care not to damage the wires.
Tin Foil S Do not use detergents or glass cleaners with abrasive
ingredients.
S When measuring voltage, wind a piece of tin foil
BE4029 around the top of the negative probe and press the foil
against the wire with your finger, as shown.
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
(c) Inspect the voltage at the center of each heat wire, as
shown.
Voltage Criteria
At Center Approx. 5 V OK (No break in wire)
Approx.10 V or 0 V Broken wire
BE0123
HINT:
Several If the voltage is approximately 10 V, the wire is broken between
0 Volt Volts
the center of the wire and the positive (+) end. If there is no volt-
Broken age, the wire is broken between the center of the wire and
Wire
ground.
V (d) Place the voltmeter positive (+) lead against the defogger
positive (+) terminal.
(e) Place the voltmeter negative (-) lead with the foil strip
BE0124 against the heat wire at the positive (+) terminal end and
slide it toward the negative (-) terminal end.
2002 4RUNNER (RM887U)
Author : Date : 1526
BE-59
BODY ELECTRICAL - DEFOGGER SYSTEM
(f) The point where the voltmeter deflects between zero and
several 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
12 V as the meter probe is moved to the other end.
4. IF NECESSARY, REPAIR DEFOGGER WIRE
(a) Clean the broken wire tips with grease, wax and silicone
Repair Point
remover.
(b) Place the masking tape along both sides of the wire to be
repaired.
Broken (c) Thoroughly mix the repair agent (Dupont paste No.
Wire
4817).
Masking Tape
BE0150
(d) Thoroughly mix the repair agent (Dupont paste No. 4817
or equivalent).
(e) Using a fine tip brush, apply a small amount of the agent
to the wire.
(f) After a few minutes, remove the masking tape.
(g) Do not repair the defogger wire for at lease 24 hours.
BE0151
5. INSPECT MIRROR DEFOGGER OPERATION
2 3 (a) Connect the positive (+) lead from the battery to terminal
3 and the negative (-) lead to terminal 2.
(b) Check that the mirror becomes warm.
HINT:
It takes a little time for the mirror to become warm.
I09468
2002 4RUNNER (RM887U)
Author : Date : 1527
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