Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM10000000276TE
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for Gasoline Model): Washer Motor Circuit; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]

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

for TMMMS Made:
for TMC Made Hatchback:
for TMC Made Sedan:

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses of circuits related to this system before performing the following procedure.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*

    for TMMMS Made:

    Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, TMMMS Made)): REGISTRATION

    except TMMMS Made:

    Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function (Gasoline Model, except TMMMS Made)): REGISTRATION

    • *: w/ Smart Key System

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter following menus: Body Electrical / Main Body / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

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

-

Rear Washer Relay

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

OFF or ON

-

Body Electrical > Main Body > Active Test

Tester Display

Front Washer Relay

Body Electrical > Main Body > Active Test

Tester Display

Rear 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

(a) Remove the windshield washer motor and pump assembly.

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; WIPER / WASHER: WASHER MOTOR: REMOVAL

(b) Inspect the windshield washer motor and pump assembly.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; WIPER / WASHER: WASHER MOTOR: INSPECTION

NG

REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY

OK

3.

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

(a) Disconnect the A55 windshield wiper relay connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A55-6 (IGWS) - Body ground

Ignition switch ON

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A55-5 (EWS) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

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

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

Standard Resistance:

for TMMMS Made, TMC Made Hatchback:

Tester Connection

Condition

Specified Condition

A55-1 (+WR) - A35-1 (B)

Always

Below 1 Ω

A55-7 (-WR) - A35-2 (SW)

Always

Below 1 Ω

A55-1 (+WR) or A35-1 (B) - Body ground

Always

10 kΩ or higher

A55-7 (-WR) or A35-2 (SW) - Body ground

Always

10 kΩ or higher

for TMC Made Sedan:

Tester Connection

Condition

Specified Condition

A55-1 (+WR) - A35-1 (B)

Always

Below 1 Ω

A35-2 (SW) - Body ground

Always

Below 1 Ω

A55-1 (+WR) or A35-1 (B) - Body ground

Always

10 kΩ or higher

OK

REPLACE WINDSHIELD WIPER RELAY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR