Toyota Yaris: Power Window Control System / Driver Side Power Window does not Operate with Power Window Master Switch

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Driver Side Power Window does not Operate with Power Window Master Switch

DESCRIPTION

When the ignition switch is ON, the power window regulator motor assembly (for driver door) is operated by the multiplex network master switch assembly. The power window regulator motor assembly (for driver door) has motor, regulator and ECU functions.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The power window control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly.
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If the power window regulator motor assembly (for driver door) has been replaced with a new one, initialize the power window control system.
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Inspect the fuses for circuits related to this system before performing the following procedure.
If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.
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PROCEDURE

1.	READ VALUE USING GTS (MAIN BODY)

(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
Communication D-Door Motor	Connection status between power window regulator motor assembly (for driver door) and main body ECU (multiplex network body ECU)	STOP or OK	STOP: Communication stopped OK: Normal communication	-
Communication Master Switch	Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU)	STOP or OK	STOP: Communication stopped OK: Normal communication	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Communication D-Door Motor

Connection status between power window regulator motor assembly (for driver door) and main body ECU (multiplex network body ECU)

STOP or OK

STOP: Communication stopped

OK: Normal communication

Communication Master Switch

Connection status between multiplex network master switch assembly and main body ECU (multiplex network body ECU)

STOP or OK

STOP: Communication stopped

OK: Normal communication

Body Electrical > Main Body > Data List

Tester Display
Communication D-Door Motor
Communication Master Switch

OK:

OK is displayed for each Data List item above.

GO TO LIN COMMUNICATION SYSTEM (Proceed to How to Proceed with Troubleshooting)

2.	READ VALUE USING GTS (D-DOOR MOTOR)

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

Body Electrical > D-Door Motor > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
D Door P/W Up SW	Driver door power window manual up switch signal	OFF or ON	OFF: Driver door power window manual up switch not being operated ON: Driver door power window manual up switch being operated	-
D Door P/W Down SW	Driver door power window manual down switch signal	OFF or ON	OFF: Driver door power window manual down switch not being operated ON: Driver door power window manual down switch being operated	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

D Door P/W Up SW

Driver door power window manual up switch signal

OFF or ON

OFF: Driver door power window manual up switch not being operated

ON: Driver door power window manual up switch being operated

D Door P/W Down SW

Driver door power window manual down switch signal

OFF or ON

OFF: Driver door power window manual down switch not being operated

ON: Driver door power window manual down switch being operated

Body Electrical > D-Door Motor > Data List

Tester Display
D Door P/W Up SW
D Door P/W Down SW

OK:

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

GO TO STEP 4

3.	PERFORM ACTIVE TEST USING GTS (D-DOOR MOTOR)

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

CAUTION:

Be careful to avoid injuries as this test causes vehicle parts to move. During the Active Test, the jam protection function will not operate.

Body Electrical > D-Door Motor > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Power Window	Power window	OFF / DOWN / UP	-

Body Electrical > D-Door Motor > Active Test

Tester Display
Power Window

OK:

Driver door power window operates normally.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)

4.	INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

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REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door))

(a) Disconnect the L7 power window regulator motor assembly (for driver door) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
L13-20 (UP) - L7-10 (UP)	Always	Below 1 Ω
L13-20 (UP) or L7-10 (UP) - Body ground	Always	10 kΩ or higher
L13-15 (DOWN) - L7-7 (DOWN)	Always	Below 1 Ω
L13-15 (DOWN) or L7-7 (DOWN) - Body ground	Always	10 kΩ or higher

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)

REPAIR OR REPLACE HARNESS OR CONNECTOR

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