2006 Ford Mustang Base, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE

DTC Index: Lighting: Interior

SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Perform Test
B1084 Trunk Lamp Circuit Failure If the luggage compartment lamp is inoperative, GO to PINPOINT TEST F .
If the luggage compartment lamp is always on, GO to PINPOINT TEST G .
B1319 Driver's Door Ajar Circuit Failure GO to PINPOINT TEST D .
B1327 Passenger's Door Ajar Circuit Failure GO to PINPOINT TEST D .
B2021 Dome Lamp Output Return Circuit Failure GO to PINPOINT TEST A .
B2550 Lamp Dome Output Circuit Short to Ground GO to PINPOINT TEST A .
B2554 Lamp Dome Output Circuit Failure GO to PINPOINT TEST D .
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:

  • 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.

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