Toyota Yaris: Wiper And Washer System / Washer Motor Circuit

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

DESCRIPTION

When the windshield washer motor and pump assembly receives signals from the windshield wiper switch assembly, it operates to spray washer fluid from the washer nozzle sub-assemblies.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses of circuits related to this system before performing the following procedure.

HINT:

The wiper and washer system uses the CXPI communication system. First, confirm that there is no malfunction in the CXPI communication system.

PROCEDURE

1.

PERFORM ACTIVE TEST USING GTS (FRONT WASHER RELAY)

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Front Washer Relay

Function to operate the windshield washer motor and pump assembly (Front)

OFF or ON

-
Body Electrical > Main Body > Active Test

Tester Display

Front Washer Relay

OK:

Windshield washer motor and pump assembly operates normally.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

Click here

NG

REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (POWER SOURCE - WINDSHIELD WIPER RELAY ASSEMBLY)

(a) Disconnect the A50 windshield wiper relay assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

A50-6 (IGWS) - Body ground

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Windshield Wiper Relay Assembly)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-5 (EWS) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY ASSEMBLY - WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

A50-1 (+WR) - A44-1 (B)

Always

Below 1 Ω

A50-7 (-WR) - A44-2 (SW)

Always

Below 1 Ω

A50-1 (+WR) or A44-1 (B) - Body ground

Always

10 kΩ or higher

A50-7 (-WR) or A44-2 (SW) - Body ground

Always

10 kΩ or higher
OK

REPLACE WINDSHIELD WIPER RELAY ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Wiper and Washer Switch Circuit

    DESCRIPTION The condition of the windshield wiper switch assembly is detected and sent to the steering sensor in this circuit. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration...

    Wiper Ecu

    ..

    Other information:

    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Front Door Courtesy Switch


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    Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Inspection


    INSPECTION PROCEDURE 1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (a) Check the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Front Wiper Switch Tester Connection Condition Specified Condition z5-14 (MIST) -z5-5 (E) MIST position Below 1 Ω z5-14 (MIST) -z5-5 (E) Except MIST position 10 kΩ or higher z5-10 (W_OFF) - z5-5 (E) OFF position Below 1 Ω z5-10 (W_OFF) - z5-5 (E) Except OFF position 10 kΩ or higher z5-13 (+S) - z5-5 (E) AUTO position Below 1 Ω z5-13 (+S) - z5-5 (E) Except AUTO position 10 kΩ or higher z5-11 (+1) - z5-5 (E) LO position Below 1 Ω z5-11 (+1) - z5-5 (E) Except LO position 10 kΩ or higher z5-12 (+2) - z5-5 (E) HI position Below 1 Ω z5-12 (+2) - z5-5 (E) Except HI position 10 kΩ or higher Front Washer Switch Tester Connection Condition Specified Condition z5-15 (WF) - z5-5 (E) ON position Below 1 Ω z5-15 (WF) - z5-5 (E) OFF position 10 kΩ or higher Auto Sensitivity Adjustment Switch Tester Connection Condition Specified Condition z5-4 (VR) - z5-5 (E) P1 position 1102 to 1218 Ω z5-4 (VR) - z5-5 (E) P2 position 570 to 630 Ω z5-4 (VR) - z5-5 (E) P3 position 256...

    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

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