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.
Inspection Procedure
- CHECK FOR DTC
- Check for DTCs.
Result:
RESULT REFERENCE CHARTResult Proceed to DTC is not output A B2311 is output B B2312 is output C B2313 is output D LIN communication system DTC output reoccur E B: GO TO DTC B2311
C: GO TO DTC B2312
D: GO TO DTC B2313
E: GO TO LIN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
A: Go to Next Step
- Check for DTCs.
- CHECK MANUAL UP/DOWN FUNCTION
- Check that the manual UP/DOWN function using the multiplex network master switch can operate the driver door power window.
OK:
Manual UP/DOWN function operates normally.
NG: OTHER PROBLEM (See DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH )
OK: Go to Next Step
- Check that the manual UP/DOWN function using the multiplex network master switch can operate the driver door power window.
- READ VALUE USING TECHSTREAM
- Use the Data List to check if the master switch is functioning properly.
Master Switch:
DATA LIST REFERENCE CHARTTester Display Measurement Item/Range Normal Condition Diagnostic Note D Door P/W Auto SW Driver side power window auto UP/DOWN switch signal/ON or OFF ON: Driver side power window auto UP/DOWN switch on master switch operated
OFF: Driver side power window switch on master switch not operated- OK:
Techstream display changes normally when master switch is operated.
NG: REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (See REMOVAL )
OK: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (See REMOVAL )
- Use the Data List to check if the master switch is functioning properly.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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