Toyota Tundra. Manual — part 764

Fig. 202: Applying Small Amount Of Agent To Wire
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e. After a few minutes, remove the masking tape.

NOTE:

Do not repair the defogger wire again for at least 24 hours.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Windshield/WindowGlass - Tundra

2009 ACCESSORIES AND EQUIPMENT

Wiper & Washer - Tundra

WIPER AND WASHER SYSTEM

PARTS LOCATION

Fig. 1: Identifying Location Of Wiper And Washer System Components
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Wiper & Washer - Tundra

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Wiper & Washer - Tundra

SYSTEM DIAGRAM

Fig. 2: Wiper And Washer System Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

SYSTEM DESCRIPTION

1. WINDSHIELD WASHER OPERATION

a. When the front washer switch is turned on for approximately 0.3 seconds or more, this system

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Wiper & Washer - Tundra

operates the front wipers at a low speed immediately after the washer fluid is sprayed. If the switch
is turned off within 1.5 seconds, the system stops the wipers when the switch is turned off. If the
switch is turned on for more than 1.5 seconds, the system stops the wipers approximately 2.2
seconds after the switch is turned off.

2. INTERMITTENT OPERATION

a. The system operates the front wipers according to an adjustable interval time when the front wiper

switch is turned to the INT position. The interval can be adjusted between 1.6 to 10.7 seconds using
the adjust dial.

b. When the wiper switch is turned to the INT position, current flows from the already charged

capacitor C1 through terminals INT 1 and INT 2 of the wiper control switch, to Tr1 (transistor).
When Tr1 turns on, current flows in the following manner: wiper switch terminal +S, terminal +1
(same switch), wiper motor terminal +1, wiper motor, ground. As a result, the wiper motor
operates. When the current flow to capacitor C1 ends, Tr1 turns off to stop the relay contact point
and halts the wiper motor. When the relay contact point turns off, capacitor C1 begins to charge
again and Tr1 remains off until charging has been completed. This period of time corresponds to
the adjust dial setting. When capacitor C1 is fully charged, Tr1 turns on and then the relay contact
point activates, causing the motor to operate. The adjust dial (variable resistor) changes the charge
time of capacitor C1.

Fig. 3: Wiper Motor Switch Circuit Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

PROBLEM SYMPTOMS TABLE

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Wiper & Washer - Tundra