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.
2018 Infiniti QX80 AWDFACTORY OEM SERVICE PROCEDURE
Power Window Control System (Diagnostics)
- Description
- Basic Inspection
- Ecu Diagnosis Information
- Component Parts /Circuit Diagnosis
- Power Supply And Ground Circuit (Power Window Main Switch)
- Power Supply And Ground Circuit (Front Power Window Switch [Passenger Side])
- Power Supply And Ground Circuit (Rear Power Window Switch)
- Power Window Motor (Driver Side)
- Power Window Motor (Passenger Side)
- Power Window Motor (Rear LH)
- Power Window Motor (Rear RH)
- Encoder (Driver Side)
- Encoder (Passenger Side)
- Encoder (Rear LH)
- Encoder (Rear RH)
- Door Key Cylinder Switch
- Power Window Serial Link (Power Window Main Switch)
- Power Window Serial Link (Front Power Window Switch [Passenger Side])
- Power Window Serial Link (Rear Power Window Switch LH)
- Power Window Serial Link (Rear Power Window Switch RH)
- Symptom Diagnosis
- Power Windows Do Not Operate With Power Window Main Switch
- Driver Side Power Window Does Not Operate
- Front Passenger Side Power Window Does Not Operate When Power Window Main Switch Is Operated
- Front Passenger Side Power Window Does Not Operate When Front Power Window Switch (Passenger Side) Is Operated
- Front Passenger Side Power Window Does Not Operate When Both Power Window Main Switch And Front Power Window Switch Are Operated
- Rear LH Side Power Window Does Not Operate When Power Window Main Switch Is Operated
- Rear LH Side Power Window Does Not Operate When Rear Power Window Switch LH Is Operated
- Rear LH Side Power Window Does Not Operate When Both Power Window Main Switch And Rear Power Window Switch LH Are Operated
- Rear RH Side Power Window Does Not Operate When Power Window Main Switch Is Operated
- Rear RH Side Power Window Does Not Operate When Rear Power Window Switch RH Is Operated
- Rear RH Side Power Window Does Not Operate When Both Power Window Main Switch And Rear Power Window Switch RH Are Operated
- Driver Side Auto Operation Does Not Operate But Manual Operate Normally
- Passenger Side Auto Operation Does Not Operate But Manual Operate Normally
- Rear LH Auto Operation Does Not Operate But Manual Operate Normally
- Rear RH Auto Operation Does Not Operate But Manual Operate Normally
- Power Window Anti-Pinch Function Does Not Operate
- Power Window Retained Power Function Does Not Operate Normally
- Door Key Cylinder Switch Does Not Operate Power Windows
- Keyless Power Window Down Does Not Operate
- Power Window Lock Switch Does Not Function
- Driver Side Power Window Switch Illumination Does Not Illuminate
- Passenger Side Power Window Switch Illumination Does Not Illuminate
- Rear LH Power Window Switch Illumination Does Not Illuminate
- Rear RH Power Window Switch Illumination Does Not Illuminate
- Wiring Diagram
Factory Service Tools
Use the Manual With the Right Hardware
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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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