Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2009CUTAWAY E250, 4R70WREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXLIGHTING DTCSINTERIOR LIGHTINGSMART JUNCTION BOX (SJB) DTC CHART
2009 Ford Cutaway E250, 4R70W
Smart Junction Box (SJB) DTC Chart
2009 Ford Cutaway E250, 4R70WSECTION Smart Junction Box (SJB) DTC Chart
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| 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 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 . TEST the system for normal operation. |
| B1320 | Driver Door Ajar Circuit Open | Go To PINPOINT TEST D . |
| B1328 | Passenger Door Ajar Circuit Open | Go To PINPOINT TEST D . |
| B1336 | Door Ajar RR Circuit Open | Go To PINPOINT TEST D . |
| B1572 | Door Ajar LR Circuit Open | Go To PINPOINT TEST D . |
| B1688 | Lamp Dome Input Circuit Short to Ground | Go To PINPOINT TEST D . |
| B2A35 | Interior Lighting Output Circuit Open | If the interior courtesy lamps are inoperative, Go To PINPOINT TEST C
. If the interior courtesy lamps stay on continuously, Go To PINPOINT TEST D . |
| B2A36 | Interior Lighting Output Circuit Short to Ground | Go To PINPOINT TEST C . |
| All other DTCs | - | REFER to the Diagnostic Trouble Code (DTC) Chart in MULTIFUNCTION ELECTRONIC MODULES article. |
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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.