Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch [12/2022 - ]: Procedure
- READ VALUE USING GTS
- 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 D Door P/W AUTO Switch Driver door power window auto switch signal OFF or ON OFF: Driver door power window auto up or auto down switch not being operated
ON: Driver door power window auto up or auto down switch being operated- Body Electrical > Main Body > Data List
Tester Display D Door P/W AUTO Switch OK
On the GTS screen, ON or OFF is displayed accordingly.
Result
Proceed to OK NG
Result:
NG
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to REMOVAL [12/2022 - ]
Result:
OK
See step 2
- Read the Data List according to the display on the GTS.
- READ VALUE USING GTS
- 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 D Door Power Window AUTO Switch Driver 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 D Door Power Window AUTO Switch OK
On the GTS screen, ON or OFF is displayed accordingly.
Result
Proceed to OK NG
Result:
NG
See step 5
Result:
OK
See step 3
- Read the Data List according to the display on the GTS.
- PERFORM INITIALIZATION
- Initialize the power window regulator motor assembly LH (for driver door).
Refer to REGISTRATION [12/2022 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Initialize the power window regulator motor assembly LH (for driver door).
- CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION)
- Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
Refer to OPERATION CHECK [12/2022 - ]
OK
Driver door auto up and down functions are normal.
Result
Proceed to OK NG
Result:
OK
END (PROBLEM DUE TO INITIALIZATION FAILURE)
Result:
NG
REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Door). Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]
- Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
- REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
- Replace the multiplex network master switch assembly.
Refer to REMOVAL [12/2022 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 6
- Replace the multiplex network master switch assembly.
- CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP / DOWN FUNCTION)
- Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
Refer to OPERATION CHECK [12/2022 - ]
OK
Driver door auto up and down functions are normal.
Result
Proceed to OK NG
Result:
OK
END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)
Result:
NG
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [12/2022 - 03/2023] , or refer to REMOVAL [03/2023 - ]
- Check that the driver door power window moves when the auto up and down functions of the multiplex network master switch assembly are operated.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.