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 FX45FACTORY OEM SERVICE PROCEDURE

ECM Terminals and Reference Value: Preparation

ECM is located behind the passenger side instrument lower panel. For this inspection, remove passenger side instrument lower panel.
Remove ECM harness connector.

Fig 1: Locating ECM & ECM Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
When disconnecting ECM harness connector, loosen it with levers as far as they will go as shown in Fig 2 .
Connect a break-out box (SST) and Y-cable adapter (SST) between the ECM and ECM harness connector.
- Use extreme care not to touch 2 pins at one time.
- Data is for comparison and may not be exact.
Fig 2: Loosening Levers & Disconnecting ECM Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.

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.

Shop Manual-Ready Tools Compare Repair Quote Quote Shield Pro

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.