Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH

DESCRIPTION

If the manual up and down functions operate normally but the auto up and down functions do not, the power window control system may be in fail-safe mode.

If power window initialization has not been performed, the auto up and down functions will not operate.

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

NOTICE:

  • If the power window regulator motor assembly (for rear LH door) has been replaced with a new one, initialize the power window control system.

    Click here

  • Check that power window system customize settings "RL Window Auto Up Function" and "RL Window Auto Down Function" are set to "Enable" before performing the following procedure.

    Click here

  • After the catch protection function has operated, the auto up function will not operate the first time the power window auto up switch is operated. The auto up function will operate normally after the first power window switch operation.
  • 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

HINT:

If the pulse sensor built into the power window regulator motor assembly (for rear LH door) is malfunctioning, the power window control system will enter fail-safe mode. The remote up and down and auto up and down functions cannot be operated during fail-safe mode. However, the power window can be closed by holding the rear power window regulator switch assembly (for rear LH door) at the auto up position, and opened manually by pushing down the rear power window regulator switch assembly (for rear LH door).

PROCEDURE

1.

READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RL Door Power Window AUTO Switch

Rear LH door power window auto switch

OFF or ON

OFF: Auto up or auto down switch not being operated

ON: Auto up or auto down switch being operated

-
Body Electrical > Main Body > Data List

Tester Display

RL Door Power Window AUTO Switch

OK:

On the GTS screen, ON or OFF is displayed accordingly.

NG

GO TO STEP 4

OK

2.

PERFORM INITIALIZATION

(a) Initialize the power window regulator motor assembly LH (for rear LH door).

Click here

NEXT

3.

CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION)

(a) Check that the rear LH door power window moves when the auto up and down functions of the rear power window regulator switch assembly (for rear LH door) are operated.

Click here

OK:

Rear LH door auto up and down functions are normal.

OK

END (PROBLEM DUE TO INITIALIZATION FAILURE)
NG

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door)

4.

INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH Door)

Click here

NG

REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Rear LH Door)

OK

5.

CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door))

(a) Disconnect the N3 power window regulator motor assembly (for rear LH door) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N2-8 (AUTO) - N3-4 (AUTO)

Always

Below 1 Ω

N2-8 (AUTO) or N3-4 (AUTO) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door)

(a) Connect the N3 power window regulator motor assembly (for rear LH door) connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

N2-8 (AUTO) - Body ground

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Power Window Regulator Switch Assembly (for Rear LH Door))
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door)

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