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.
2003 Infiniti FX45FACTORY OEM SERVICE PROCEDURE
Integrated Display System
- Integrated Display System
- System Description
- CAN Communication System Description
- Component Parts And Harness Connector Location
- Schematic
- Wiring Diagram - INF/D -
- Wiring Diagram - COMM -
- Terminals and Reference Value for Display Unit
- Terminals and Reference Value for A/C and AV Switch
- On Board Self-Diagnosis Function
- Self-Diagnosis Mode
- A/C And Av Switch Self-Diagnosis Function
- Trouble Diagnosis Chart By Symptom
- Power Supply And Ground Circuit Check For Display Unit
- Power Supply And Ground Circuit Check For A/C And Av Switch
- Vehicle Speed Signal Inspection
- Illumination Signal Inspection
- Ignition Signal Inspection
- Audio Communication Line Inspection
- A/C And Av Switch Does Not Operate
- Can Communication Line Inspection
- Audio Steering Wheel Switch Inspection
- Removal and Installation of Display
- Removal and Installation of A/C and AV Switch
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no 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.