Toyota Yaris: Wiper And Washer System / System Description

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System / System Description

SYSTEM DESCRIPTION

FRONT WIPER CONTROL FUNCTION

Control/Function	Description
MIST function	Operates the front wipers in LO when the front wiper switch is held in the MIST position.
Auto operation	Operates the wipers as requested by the rain sensor when the front wiper switch is in the AUTO position.
Intermediate position return function	Resumes wiper operation according to the operation of the front wiper switch or washer switch when the wipers are stopped in any position other than the lower reverse position.
Vehicle speed sensing type adjustable intermittent wiper control	Controls the delay of the front wipers when the front wiper switch is in the AUTO position. HINT: The intermittent operation interval is controlled by the auto sensitivity adjustment switch. The intermittent operation interval changes in accordance with the vehicle speed. When the front wiper switch is in the AUTO position and the vehicle is stopped, the front wipers operate for 1 cycle when the vehicle starts off. When the auto sensitivity adjustment switch is moved to a faster position, the delay is reset and control begins according to the new setting.
Vehicle speed linked wiper operation control	Operates the wipers as follows when the vehicle is stopped. When the vehicle speed is 5 km/h (3 mph) or lower and the auto sensitivity adjustment switch is in any position other than P4, if the front wiper switch is moved to the LO position, the wipers will operate in LO for 3 cycles and then at 2.5 seconds intervals. When the auto sensitivity adjustment switch is in any position other than P4 and the front wiper switch is in the LO position, if the vehicle speed decreases to 5 km/h (3 mph) or lower, the wipers will operate in LO for 2 cycles and then at 2.5 seconds intervals. HINT: When this control is operating, if the vehicle speed increases to 7 km/h (4 mph) or more, the front wipers will operate in LO. If the auto sensitivity adjustment switch is in the P4 position, this control will not operate and the wipers will operate in LO. When the wipers are operating, if the auto sensitivity adjustment switch is moved from P4 to any other position, the wipers will immediately begin operating at 2.5 seconds intervals.
Protection mode	Suspends wiper operation if the wipers are prevented from operating for 10 seconds or more, in order to protect the wiper and washer system.

WASHER CONTROL FUNCTION

Control/Function	Description
Front washer cooperation	When the washer switch is held in the Fr WASH position 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 held in the Fr WASH position 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 front washer cooperation completes, operates the wipers for 1 cycle to remove any remaining washer fluid. HINT: This function only operates when the vehicle is stopped or is being driven at a very low speed (below approximately 7 km/h (4 mph)).

Control/Function

Description

Front washer cooperation

When the washer switch is held in the Fr WASH position 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 held in the Fr WASH position 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 front washer cooperation completes, operates the wipers for 1 cycle to remove any remaining washer fluid.

HINT:

This function only operates when the vehicle is stopped or is being driven at a very low speed (below approximately 7 km/h (4 mph)).

System Diagram

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How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the wiper and washer system. *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2...

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