Toyota Avalon (XX50): Wiper And Washer System(for Hv Model)

1.

VEHICLE BROUGHT TO WORKSHOP

2.

CUSTOMER PROBLEM ANALYSIS

3.

READ OUT AND SAVE OPERATION HISTORY

Operation History

4.

PRE-CHECK

5.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

CAN DTCs are not output

A

CAN DTCs are output

B

GO TO CAN COMMUNICATION SYSTEM

6.

CHECK FOR DTC*

DTCs are not output

A

DTCs are output

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

7.

PROBLEM SYMPTOMS TABLE

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B

GO TO PROBLEM SYMPTOMS TABLE

8.

OVERALL ANALYSIS AND TROUBLESHOOTING*

9.

ADJUST, REPAIR OR REPLACE

10.

CONFIRMATION TEST

END

*1

WINDSHIELD WIPER MOTOR ASSEMBLY

*2

LEVEL WARNING SWITCH ASSEMBLY

*3

WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

*4

NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY

- WIPER FUSE

- WIPER RELAY

- WASHER RELAY

*1

STEERING WHEEL SWITCH HOUSING

*2

WINDSHIELD WIPER SWITCH ASSEMBLY

*3

STEERING SENSOR

*4

COMBINATION METER ASSEMBLY

*5

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

*6

INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

- WASHER FUSE

*7

DLC3

-

-

Lane Departure Alert System (w/ Steering Control)

Intelligent Clearance Sonar System

Parking Assist Monitor System

Panoramic View Monitor System

Pre-collision System

Lighting System (for HV Model with Cornering Light)

Wiper speed regulation

Maintains the default speed of the wipers even when the supply voltage or resistance changes.

Wiper speed HI to LO transition control

Smoothly controls the change in speed of the wipers when the wiper speed is changed from HI to LO.

Service position control

Stops the front wipers at the top of their stroke when the windshield wiper switch assembly is held in the MIST position for 2 seconds or more within approximately 45 seconds after the power switch is turned off.

HINT:

• The front wipers can be returned from the service position by turning the power switch on (IG) and operating the windshield wiper switch assembly.
• If the MIST function is operated when the front wipers are in the service position, the front wipers will return to the park position.
• The front wipers must be in the service position when locking them back*.

Engine hood interference damage reduction function

• Operates the windshield wiper motor assembly at a slow speed for the first cycle when returning from the service position to minimize damage to the engine hood if a wiper arm is still in the lock-back position.
• Moves the wipers a short distance in reverse if a wiper arm in the lock-back position contacts the engine hood and the windshield wiper motor locks up.

Self-locking control

Holds the wipers in the park position when the power switch is on (IG).

Protection mode

• Limits the operation of the windshield wiper motor assembly when excessive load is detected, in order to protect the wiper and washer system.
• Refer to Fail-safe chart.

  Click here

MIST function

Operates the wipers in LO when the windshield wiper switch assembly is held in the MIST position.

Vehicle speed sensing type adjustable intermittent wiper control

Controls the delay of the front wipers when the windshield wiper switch assembly is in the INT position.

HINT:

• The intermittent operation interval is controlled by the intermittent time adjustment switch of the windshield wiper switch assembly.
• The intermittent operation interval of delay changes in accordance with the vehicle speed.
• When the windshield wiper switch assembly is in the INT position and the vehicle is stopped, the wipers operate for 1 cycle when the vehicle starts off.
• When the intermittent time adjustment switch is moved to a faster position, the delay is reset and control begins according to the new setting.

Washer cooperation

• When the washer switch is operated for 0.5 seconds or more, the front wipers operate in LO.
• When the washer switch is released, the front wipers operate in LO for 3 additional cycles.

NOTICE:

If the washer switch is operated for approximately 40 seconds or more, operation of the windshield washer motor and pump assembly is stopped to prevent burnout, and the front wipers are returned to the park position.

Drip prevention wiper function

Approximately 3 seconds after washer cooperation completes, operates the front wipers for 1 cycle to remove any remaining washer fluid.

HINT:

This function only operates when the vehicle is stationary and will stop operating at a vehicle speed of approximately 5 km/h (3 mph) or more.

Vehicle stopped wiper control

If the vehicle is stopped and the windshield wiper switch assembly is moved to the LO position, the front wipers will operate in LO for 3 cycles and then at a 2.5 second interval.

Washer fluid level low warning

Displays "Windshield Washer Fluid Low" on the multi-information display in the combination meter assembly when the washer fluid level is low.

Wiper system warning

Displays "Wiper System Malfunction Visit Your Dealer" on the multi-information display in the combination meter assembly when the wiper and washer system is malfunctioning.