2002 Lincoln Navigator RWDFACTORY OEM SERVICE PROCEDURE

Circuit Protection Devices

CIRCUIT PROTECTION DEVICES LOCATION

Component Location
A/C Clutch Diode In battery junction box.
Battery Junction Box (4.6L) On left side of engine compartment. See Figure .
Battery Junction Box (5.4L) On left side of engine compartment. See Figure .
Battery Junction Relay Box On left side of engine compartment.
Blower/Flasher Relay Block Behind center of dash. See Figure .
Central Junction Box Under left side of dash. See Figure .
Daytime Running Lights Relay Block Behind right side of dash.
Fuse Link A In engine compartment, near battery.
Fuse Link B In engine compartment, near battery.
Lock Relay Block Behind right side of dash. See Figure .
PCM Power Diode On left side of engine compartment, in battery junction box.
RPO Relay Block No. 1 Behind right side of dash, above passenger air bag. See Figure .
RPO Relay Block No. 2 In front of left rear wheelwell. See Figure .
Signal Mirror Relay Block Behind right side of dash.
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.