Exterior Lighting
Smart Junction Box (SJB) DTC Chart
| DTC | Description | Action |
|---|---|---|
| B106E | Solid State Driver Disabled Due to Short Circuit | The module has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The Smart Junction Box (SJB) cannot enable the output until the cause of the short is corrected. ADDRESS all other DTCs first. After the cause of the concern is corrected, CLEAR the DTCs. REPEAT the self-test. |
| B106F | Module Disabled Due to External Fault | The module has permanently disabled an output because an excessive current draw fault (such as a short to ground) has exceeded the limits that the SJB can withstand. The cause of the excessive current draw MUST be corrected before a new SJB is installed. ADDRESS all other DTCs first. After the cause of the concern is corrected, INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| B1472 | Lamp Headlamp Input Circuit Short to Ground | GO to PINPOINT TEST D . |
| B1499 | Lamp Turn Signal Left Circuit Failure | GO to PINPOINT TEST M . |
| B1502 | Lamp Turn Signal Left Circuit Short to Ground | GO to PINPOINT TEST M . |
| B1503 | Lamp Turn Signal Right Circuit Failure | GO to PINPOINT TEST M . |
| B1506 | Lamp Turn Signal Right Circuit Short to Ground | GO to PINPOINT TEST M . |
| B1510 | Flash to Pass Switch Circuit Short to Ground | GO to PINPOINT TEST D . |
| B1570 | Lamp Headlamp High-Beam Circuit Short to Ground | GO to PINPOINT TEST C . |
| B1578 | Lamp Park Input Circuit Short to Ground | GO to PINPOINT TEST P . |
| B1696 | Autolamp On Circuit Short to Ground | GO to PINPOINT TEST G . |
| B1791 | Autolamp Sensor Input Circuit Open | GO to PINPOINT TEST G . |
| B1793 | Autolamp Sensor Input Circuit Short to Ground | GO to PINPOINT TEST F . |
| B1797 | Lamp Headlamp Low-Beam Circuit Short to Ground | GO to PINPOINT TEST B . |
| B2008 | Wipers On Signal Circuit Short to Ground | GO to PINPOINT TEST G . |
| B2030 | Front Fog Lamp Relay Ckt Failure | GO to PINPOINT TEST Q . |
| B2048 | Left Rear Turn Lamp Circuit Short to Ground | For Explorer or Explorer Sport Trac, GO to PINPOINT TEST I
. For Mountaineer, GO to PINPOINT TEST M . |
| B2049 | Left Rear Turn Lamp Circuit Open | For Explorer or Explorer Sport Trac, if the lamp is inoperative, GO to PINPOINT TEST I
. For Explorer or Explorer Sport Trac, if the lamp is always on, GO to PINPOINT TEST J . For Mountaineer, GO to PINPOINT TEST M . |
| B2050 | Right Rear Turn Lamp Circuit Short to Ground | For Explorer or Explorer Sport Trac, GO to PINPOINT TEST I
. For Mountaineer, GO to PINPOINT TEST M . |
| B2051 | Right Rear Turn Lamp Circuit Open | For Explorer or Explorer Sport Trac, if the lamp is inoperative, GO to PINPOINT TEST I
. For Explorer or Explorer Sport Trac, if the lamp is always on, GO to PINPOINT TEST J . For Mountaineer, GO to PINPOINT TEST M . |
| B2070 | Trailer Tow Relay Coil(s) Circuit Failure | A continuous DTC that sets when the SJB
detects a short to ground from the LH/RH trailer stop/turn lamp voltage supply circuit. The self-test must be run after the repair in order for the SJB
to enable the output for the LH/RH trailer stop/turn lamp voltage supply. A trailer equipped with too many LH/RH stop/turn bulbs may also set the DTC. If the LH/RH trailer stoplamp is inoperative, GO to PINPOINT TEST Z . |
| B2071 | Hazard Switch Signal Short to Ground | GO to PINPOINT TEST N . |
| B2254 | Front Fog Lamp Switch Failure | GO to PINPOINT TEST S . |
| B2281 | Right Turn Switch Short to Ground | GO to PINPOINT TEST L . |
| B2282 | Left Turn Switch Short to Ground | GO to PINPOINT TEST L . |
| B2382 | Backup Light Relay Circuit - Open | CLEAR the DTC. REPEAT the on-demand self-test. If DTC B2382 is retrieved again, INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| B2407 | Backup Light Relay Circuit - High | CLEAR the DTC. REPEAT the on-demand self-test. If DTC B2407 is retrieved again, INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| B2501 | LF Lamp Low Beam Circuit Failure | If the low beam is inoperative, GO to PINPOINT TEST B
. If the low beam is always on, GO to PINPOINT TEST D . |
| B2503 | RF Lamp Low Beam Circuit Failure | If the low beam is inoperative, GO to PINPOINT TEST B
. If the low beam is always on, GO to PINPOINT TEST D . |
| B2505 | LF Lamp High Beam Circuit Failure | If the high beam is inoperative, GO to PINPOINT TEST C
. If the high beam is always on, GO to PINPOINT TEST D . |
| B2507 | RF Lamp High Beam Circuit Failure | If the high beam is inoperative, GO to PINPOINT TEST C
. If the high beam is always on, GO to PINPOINT TEST D . |
| B2512 | Front Fog Lamp Relay Ckt Short to Battery | If the fog lamps are inoperative, GO to PINPOINT TEST Q
. If the fog lamps are always on, GO to PINPOINT TEST S . |
| C1446 | Brake Switch Circuit Failure | GO to PINPOINT TEST J . |
| C1788 | Stoplamp Relay Output Circuit Short to Ground | GO to PINPOINT TEST I . |
| C1961 | Park Lamp Relay Coil Circuit Failure | INSTALL a new SJB . REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. |
| All other DTCs | - | REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES . |