2005 SCION tC (EWD572U)
93
With the ignition SW turned on, the current flows to TERMINAL 17 of the wiper and washer SW and TERMINAL 2 of the
windshield wiper motor through the FR WIP fuse. The current flows to TERMINAL 1 of the windshield washer motor through
the FR WSH fuse.
1. Low Speed Position
With the wiper and washer SW turned to LO position, the current flows from TERMINAL 17 of the wiper and washer SW to
TERMINAL 7 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper
motor to run at low speed.
2. High Speed Position
With the wiper and washer SW turned to HI position, the current flows from TERMINAL 17 of the wiper and washer SW to
TERMINAL 8 to TERMINAL 4 of the windshield wiper motor to TERMINAL 5 to GROUND and causes the windshield wiper
motor to run at high speed.
3. INT Position
With the wiper and washer SW turned to INT position, the wiper relay operates and current flows from TERMINAL 17 of the
wiper and washer SW to TERMINAL 2 to GROUND. This activates the intermittent circuit and the current flows from
TERMINAL 17 of the wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the windshield wiper motor to TERMINAL 5
to GROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in the
relay.
4. Washer Continuous Operation
With the wiper and washer SW pulled to WASHER position (Washer SW ON position), the current flows from the FR WSH
fuse to TERMINAL 1 of the windshield washer motor to TERMINAL 2 to TERMINAL 11 of the wiper and washer SW to
TERMINAL 2 to GROUND and causes the windshield washer motor to run and the window washer to spray. Simultaneously,
current flows from the FR WIP fuse to TERMINAL 17 of the wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the
windshield wiper motor to TERMINAL 5 to GROUND, causing the wiper to function.
C8 Combination SW
2–Ground : Always continuity
17–Ground : Approx. 12 volts with the ignition SW at ON position
7–Ground : Approx. 12 volts with the ignition SW on and the wiper and washer SW at LO position
Approx. 12 volts every approx. 1 to 10 seconds intermittently with the ignition SW on
and the wiper and washer SW at INT position
16–Ground : Approx. 12 volts with the ignition SW on and unless the front wiper motor at STOP position
8–Ground : Approx. 12 volts with the ignition SW on and the wiper and washer SW at HI position
W2 Windshield Wiper Motor
2–3 : Closed unless the front wiper motor at STOP position
: Parts Location
Code See Page Code See Page Code See Page
C8 34 W1 33 W2 33
:
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
1E
1J
24
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1M 25
:
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IE1 40 Engine Room Main Wire and Instrument Panel Wire (Behind of the Combination Meter)
System Outline
Service Hints
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