Toyota Tundra 2005 Service - Repair - Maintenance page 4094

System Outline
With the ignition SW turned on, current flows to TERMINAL 17 of the wiper and washer SW and TERMINAL 2 of the wiper
motor through the WIP fuse. The current flows to TERMINAL 3 of the washer motor through the WSH fuse.
1. Low Speed Position
With wiper SW turned to LOW position, current flows from TERMINAL 17 of the wiper and washer SW to TERMINAL 7 to
TERMINAL 5 of the wiper motor to TERMINAL 4 to GROUND and causes the wiper motor to run at low speed.
2. High Speed Position
With wiper SW turned to HIGH position, current flows from TERMINAL 17 of the wiper and washer SW to TERMINAL 8 to
TERMINAL 3 of the wiper motor to TERMINAL 4 to GROUND and causes the motor to run at high speed.
3. INT Position
With wiper SW turned to INT position, the relay operates and the current which is connected by relay function flows from
TERMINAL 17 of the wiper and washer SW to TERMINAL 2 to GROUND. This flowing the intermittent circuit and current
flows from TERMINAL 17 of the wiper and washer SW to TERMINAL 7 to TERMINAL 5 of the wiper motor to TERMINAL 4 to
GROUND and the wiper functions.
The intermittent operation is controlled by charging and discharging of the condenser installed in the relay and the
intermittent time is controlled by a time control SW to change the charging time of the condenser.
4. Washer Interlocking Operation
With the washer SW pulled up, current flows from TERMINAL 3 of the washer motor to TERMINAL 4 to TERMINAL 11 of the
wiper and washer SW to TERMINAL 2 to GROUND and causes to the washer motor to run, and the window washer is jetted.
This causes current to flow to washer continuous operation circuit in TERMINAL 17 of the wiper and washer SW to
TERMINAL 7 to TERMINAL 5 of the wiper motor to TERMINAL 4 to GROUND and the wiper functions.
Service Hints
C17 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 wiper and washer SW at LOW position
Approx. 12 volts every approx. 1.6 to 10.7 seconds intermittently with the wiper SW at INT position
16-Ground : Approx. 12 volts with the ignition SW on unless wiper motor at STOP position
8-Ground : Approx. 12 volts with the ignition SW on and wiper and washer SW at HIGH position
11-2 : Continuity with the washer SW on
W4 Wiper Motor
1-2 : Closed unless wiper motor at STOP position
: Parts Location
Code See Page
C17 66
J30 65
J45 68
: Junction Block and Wire Harness Connector
Code See Page
1D 45
1K 45
: Connector Joining Wire Harness and Wire Harness
Code See Page
IJ2 94
: Ground Points
Code See Page
EM 90
IO 92
Code
J49 A
J50 B
W2
Junction Block and Wire Harness (Connector Location)
Cowl Wire and Driver Side J/B (Lower Finish Panel)
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
Joining Wire Harness and Wire Harness (Connector Location)
Engine Room Main Wire and Cowl Wire (Cowl Side Panel RH)
Ground Points Location
Radiator Side Support RH
Left Kick Panel
2005 TOYOTA TUNDRA (EWD611U)
See Page
68
68
65
Code See Page
W4 65
437