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.
2000 Infiniti QX4FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| ABS Actuator & Electric Unit | On right side of engine compartment. See Figure . |
| A/C Auto Amplifier | Behind center of dash. See Figure . |
| Air Bag Diagnosis Sensor Unit | Below rear of center console. See Figure . |
| ASCD Control Unit | Behind left kick panel. See Figure . |
| A/T Device | At base of selector lever. |
| Combination Flasher Unit | Behind left side of dash. See Figure . |
| Daytime Light Control Unit (Canada) | On right front fender well. See Figure . |
| ECCS Control Module (ECM) | Behind center of dash. See Figure . |
| Fan Control Amplifier | Behind glove box. |
| Front Wiper Amplifier | On right rear corner of engine compartment. See Figure . |
| Headlamp Battery Saver Control Unit | Behind left kick panel. See Figure . |
| IVCS Unit | Behind left luggage room trim. |
| NATS IMMU | On ignition key cylinder. See Figure . |
| Rear Speaker Amplifier | Behind left luggage room trim. |
| Rear Wiper Amplifier | Behind left luggage room trim. |
| Smart Entrance Control Unit | Behind dash, next to fuse block. See Figure . |
| Transfer Control Unit | Behind lower center dash panel. See Figure . |
| Transmission Control Module (TCM) | Behind dash, left of steering column. See Figure . |
Factory Service Tools
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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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