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.
2004 Ford Freestar BaseFACTORY OEM SERVICE PROCEDURE
Smart Junction Box (SJB) DTCS
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1533 | Memory 1 Switch Circuit Short to Battery | SJB | Go To PINPOINT TEST I: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY - DOES NOT OPERATE USING THE MEMORY SET SWITCH . |
| B1534 | Memory 1 Switch Circuit Short to Ground | SJB | Go To PINPOINT TEST I: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY - DOES NOT OPERATE USING THE MEMORY SET SWITCH . |
| B1537 | Memory 2 Switch Circuit Short to Battery | SJB | Go To PINPOINT TEST I: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY - DOES NOT OPERATE USING THE MEMORY SET SWITCH . |
| B1538 | Memory 2 Switch Circuit Short to Ground | SJB | Go To PINPOINT TEST L: DTC B2729 - CUSHION OVER-TEMP DETECTED/DTC B2730 - BACK OVER-TEMP DETECTED/DTC B2731 - DIFFERENTIAL TEMPERATURE FAULT - PASSENGER SEAT . |
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.