LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2004 >> Excursion 5.4 L, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 316 (Interior Lighting System) >> Diagnosis And Testing >> Interior Lighting >> Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Source Action
B1319 Driver Door Ajar Circuit Failure SJB Go To PINPOINT TEST E  .
B1327 Passenger Door Ajar Circuit Failure SJB Go To PINPOINT TEST E  .
B1335 RH Rear Door Ajar Circuit Failure SJB Go To PINPOINT TEST E  .
B1342 ECU Is Defective SJB CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new SJB. Refer to MODULE COMMUNICATIONS NETWORK . CLEAR the DTCs. REPEAT the self-test.
B1577 LH Rear Door Ajar Circuit Failure SJB Go To PINPOINT TEST E  .
B2020 Courtesy Lamp Output Circuit Short to Ground SJB Go To PINPOINT TEST B  .
B2021 Dome Lamp Output Return Circuit Short to Ground SJB Go To PINPOINT TEST B  .
B2023 Rear Courtesy Lamp Output Circuit Short to Ground SJB Go To PINPOINT TEST C  .
B2024 Rear Courtesy Lamp Output Return Circuit Failure SJB Go To PINPOINT TEST C  .
B2025 Demand Lamps Circuit Failure SJB Go To PINPOINT TEST H  .
B2077 Liftgate Ajar Circuit Failure SJB Go To PINPOINT TEST E  .
B2499 Courtesy Lamp Output Failure SJB Go To PINPOINT TEST B  .
B2550 Dome Lamp Output Circuit Short To Ground SJB Go To PINPOINT TEST B  .
B2554 Dome Lamp Output Circuit Failure SJB Go To PINPOINT TEST B  .