I01200
2
1
3
5
2
5
1
3
I03146
4
6
BE4029
Tester Probe
Tin Foil
Heat Wire
BE0123
At Center
BE-62
-
BODY ELECTRICAL
DEFOGGER SYSTEM
1580
Author:
Date:
2001 SIENNA (RM787U)
Tester connection
Condition
Specified condition
1 - Ground
Constant
Continuity
10 - Ground
Ignition switch LOCK or ACC
No voltage
10 - Ground
Ignition switch ON
Battery positive voltage
If the circuit is not as specified, replace the switch.
5.
INSPECT DEFOGGER RELAY CONTINUITY
Condition
Tester connection
Specified condition
Constant
1 - 2
Continuity
Apply B+ between
terminals 1 and 2.
3 - 5
Continuity
If continuity is not as specified, replace the relay.
6.
w/ Mirror Heater:
INSPECT MIRROR DEFOGGER CIRCUIT
(a)
Connect the positive (+) lead from the battery to terminal
4 and the negative (-) lead to terminal 6.
(b)
Check that the mirror becomes warm.
HINT:
It takes short time for the mirror to become warm.
7.
INSPECT DEFOGGER WIRE
NOTICE:
When cleaning the glass, use a soft, dry cloth, and
wipe the glass in the direction of the wire. Take care
not to damage the wires.
Do not use detergents or glass cleaners with abrasive
ingredients.
When measuring voltage, wind a piece of tin foil
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
Approx. 5V
Okay (No break in wire)
Approx.10V or 0V
Broken wire
Содержание RM787U
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