2004 Infiniti Q45FACTORY OEM SERVICE PROCEDURE

Circuit Protection Devices

CIRCUIT PROTECTION DEVICES LOCATION

Component Location
Condenser (B228) At base of right "C" pillar.Figure .
Dropping Resistor (B45) At left rear of luggage compartment. See Figure .
Engine Room Box At right front of engine compartment.Figure .
Fuse Block At right side of engine compartment.Figure .
Fuse Block (J/B) No. 1 Behind left end of dash.Figure .
Fuse Block (J/B) No. 2 (M143) Behind right kick panel.Figure .
Fuse, Fusible Link & Relay Block (J/B) In engine room box.Figure .
Fuse, Fusible Link & Relay Box In engine room box.Figure .
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.