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.
2004 Infiniti QX56 AWDFACTORY OEM SERVICE PROCEDURE
Power Window System
- Power Window System
- Component Parts and Harness Connector Location
- System Description
- CAN Communication System Description
- Schematic
- Wiring Diagram - WINDOW
- Terminal and Reference Value for Main Power Window and Door Lock/Unlock Switch RH
- Terminal and Reference Value for Power Window and Door Lock/Unlock Switch RH
- Terminal and Reference Value for BCM
- Work Flow
- CONSULT-II Inspection Procedure
- Trouble Diagnoses Symptom Chart
- BCM Power Supply and Ground Circuit Check
- Main Power Window and Door Lock/Unlock Switch Power Supply and Ground Circuit Check
- Power Window and Door Lock/Unlock Switch RH Power Supply and Ground Circuit Check
- Front Power Window Motor LH Circuit Check
- Front Power Window Motor RH Circuit Check
- Limit Switch Circuit Check Front LH
- Limit Switch Circuit Check Front RH
- Encoder Circuit Check Front LH
- Encoder Circuit Check Front RH
- Door Switch Check
- Front Door Lock Assembly LH (Key Cylinder Switch) Check
- Power Window Serial Link Check Front LH and RH
- Rear Power Window Control Unit LH or RH Power Supply and Ground Circuit Check
- Rear Power Window Switch LH or RH Power Supply and Ground Circuit Check
- Rear Power Window Motor LH Circuit Check
- Rear Power Window Motor RH Circuit Check
- Limit Switch Circuit Check Rear LH and RH
- Encoder Circuit Check Rear LH or RH
- Power Window Serial Link Check Rear LH or RH
- Rear Power Vent Window Switch Circuit Check
- Rear Power Vent Window Motor LH Circuit Check
- Rear Power Vent Window Motor RH Circuit Check
- Rear Power Vent Window Relay (OPEN) Check
- Rear Power Vent Window Relay (CLOSE) Check
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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