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 [11/2022 - ]: Procedure
- PERFORM INITIALIZATION
- Initialize the power window regulator motor assembly (for driver door).
Refer to INITIALIZATION [09/2021 - ]
- 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 [09/2021 - ]
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
See step 2
- Initialize the power window regulator motor assembly (for driver door).
- 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 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 Power Window 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 [09/2021 - ]
Result:
OK
See step 3
- 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:
OK
REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)
Refer to REMOVAL [11/2022 - ]
Result:
NG
See step 4
- Read the Data List according to the display on the GTS.
- CHECK POWER WINDOW CONTROL SYSTEM
- Replace the multiplex network master switch assembly.
Refer to REMOVAL [09/2021 - ]
- 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 [09/2021 - ]
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 [11/2022 - ]
- Replace the multiplex network master switch assembly.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.