Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Rear Wiper Motor Circuit

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System / Rear Wiper Motor Circuit

DESCRIPTION

This circuit is the power source circuit for the rear wiper motor assembly.

WIRING DIAGRAM

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.*1
    • for HEV Model:

      Click here

    • for Gasoline Model:

      Click here

    • *1: w/ Smart Key System

PROCEDURE

1.

PERFORM ACTIVE TEST USING GTS (REAR WIPER OPERATION)

(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

Rear Wiper Operation

Function to operate the rear wiper motor assembly

OFF or ON

-
Body Electrical > Main Body > Active Test

Tester Display

Rear Wiper Operation

OK:

Rear wiper motor assembly operates normally.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT REAR WIPER MOTOR ASSEMBLY

Click here

NG

REPLACE REAR WIPER MOTOR ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (POWER SOURCE - REAR WIPER MOTOR ASSEMBLY)

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

U8-4 (B) - Body ground

Ignition switch off

11 to 14 V

*a

Front view of wire harness connector

(to Rear Wiper Motor Assembly)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

CHECK HARNESS AND CONNECTOR (REAR WIPER MOTOR ASSEMBLY - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

U8-5 (E) - Body Ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

5.

CHECK HARNESS AND CONNECTOR (REAR WIPER MOTOR ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

U8-3 (LS) - I85-11 (RWRY)

Always

Below 1 Ω

U8-3 (LS) or I85-11 (RWRY) - Body ground

Always

10 kΩ or higher
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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