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.
2006 Ford Freestar BaseFACTORY OEM SERVICE PROCEDURE
Driver Seat Module (DSM)
DRIVER SEAT MODULE (DSM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1342 | ECU Is Faulted | DSM | INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| B1530 | Memory Set Switch Circuit Short to Ground | DSM | GO to PINPOINT TEST I . |
| B1534 | Memory 1 Switch Circuit Short to Ground | DSM | GO to PINPOINT TEST I . |
| B1538 | Memory 2 Switch Circuit Short to Ground | DSM | GO to PINPOINT TEST I . |
| B1663 | Seat Driver Front Up/Down Motor Stalled | DSM | If the motor does not operate, GO to PINPOINT TEST H . If motor operates, GO to PINPOINT TEST I . |
| B1664 | Seat Driver Rear Up/Down Motor Stalled | DSM | If the motor does not operate, GO to PINPOINT TEST N . If motor operates, GO to PINPOINT TEST I . |
| B1665 | Seat Driver Forward/Backward Motor Stalled | DSM | If the motor does not operate, GO to PINPOINT TEST H . If motor operates, GO to PINPOINT TEST I . |
| B1667 | Mirror Driver Up/Down Motor Stalled | DSM | REFER to REAR VIEW MIRRORS . |
| B1668 | Mirror Driver Right/Left Motor Stalled | DSM | REFER to REAR VIEW MIRRORS . |
| B1669 | Mirror Passenger Up/Down Motor Stalled | DSM | REFER to REAR VIEW MIRRORS . |
| B1670 | Mirror Passenger Right/Left Motor Stalled | DSM | REFER to REAR VIEW MIRRORS . |
| B1676 | Battery Voltage Out of Range | DSM | REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| B1711 | Seat Driver Front Up Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1715 | Seat Driver Front Down Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1719 | Seat Driver Forward Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1723 | Seat Driver Rearward Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1727 | Seat Driver Rear Up Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1731 | Seat Driver Rear Down Switch Circuit Short to Battery | DSM | GO to PINPOINT TEST H . |
| B1735 | Mirror Driver Vertical Switch Circuit Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B1739 | Mirror Driver Horizontal Switch Circuit Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B1743 | Mirror Passenger Vertical Switch Circuit Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B1747 | Mirror Passenger Horizontal Switch Circuit Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B1950 | Seat Rear Up/Down Feedback Potentiometer Circuit Failure | DSM | GO to PINPOINT TEST I . |
| B1952 | Seat Rear Up/Down Feedback Potentiometer Circuit Short to Battery | DSM | GO to PINPOINT TEST I . |
| B1954 | Seat Front Up/Down Feedback Potentiometer Circuit Failure | DSM | GO to PINPOINT TEST I . |
| B1956 | Seat Front Up/Down Feedback Potentiometer Circuit Short to Battery | DSM | GO to PINPOINT TEST I . |
| B1962 | Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Failure | DSM | GO to PINPOINT TEST I . |
| B1964 | Seat Horizontal Forward/Rearward Feedback Potentiometer Circuit Short to Battery | DSM | GO to PINPOINT TEST I . |
| B1987 | Pedal Forward/Rearward Motor Stalled | DSM | REFER to BRAKE SYSTEM-GENERAL INFORMATION . |
| B1988 | Pedal Position Forward Switch Circuit Short to Ground | DSM | REFER to BRAKE SYSTEM-GENERAL INFORMATION . |
| B1989 | Pedal Position Rearward Switch Circuit Short to Ground | DSM | REFER to BRAKE SYSTEM-GENERAL INFORMATION . |
| B1990 | Pedal Forward/Rearward Feedback Potentiometer Circuit Failure | DSM | REFER to BRAKE SYSTEM-GENERAL INFORMATION . |
| B1991 | Pedal Forward/Rearward Feedback Potentiometer Circuit Short to Battery | DSM | REFER to BRAKE SYSTEM-GENERAL INFORMATION . |
| B2312 | Mirror Passenger Horizontal Feedback Potentiometer Circuit Failure | DSM | REFER to REAR VIEW MIRRORS . |
| B2314 | Mirror Passenger Horizontal Feedback Potentiometer Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B2316 | Mirror Passenger Vertical Feedback Potentiometer Circuit Failure | DSM | REFER to REAR VIEW MIRRORS . |
| B2318 | Mirror Passenger Vertical Feedback Potentiometer Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B2320 | Mirror Driver Horizontal Feedback Potentiometer Circuit Failure | DSM | REFER to REAR VIEW MIRRORS . |
| B2322 | Mirror Driver Horizontal Feedback Potentiometer Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B2324 | Mirror Driver Vertical Feedback Potentiometer Circuit Failure | DSM | REFER to REAR VIEW MIRRORS . |
| B2326 | Mirror Driver Vertical Feedback Potentiometer Short to Battery | DSM | REFER to REAR VIEW MIRRORS . |
| B2477 | Module Configuration Failure | DSM | INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U1950 | UBP Communication Bus Fault | DSM | CHECK circuit 2077 (PK/LB) for an open connection between DSM C341c-2 and DLC C251-3 and for a short to ground or voltage. REPAIR as needed. If okay, CHECK the UBP bus for communication. REFER to MODULE COMMUNICATIONS NETWORK . If the DSM and UBP bus communication is OK, CONFIGURE the DSM and RETEST. REFER to MODULE CONFIGURATION . If the DSM will not configure correctly or the DTC returns, INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2306 | UBP Invalid Data | DSM | CHECK circuit 2077 (PK/LB) for poor connection between DSM C341c-1 and DLC C251-3 and for a short to ground or voltage. REPAIR as needed. If okay, CHECK the UBP bus for communication. REFER to MODULE COMMUNICATIONS NETWORK . If the DSM and UBP bus communication is OK, CONFIGURE the DSM and RETEST. REFER to MODULE CONFIGURATION . If the DSM will not configure correctly or the DTC returns, INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . |
| U2470 | Unexpected PRNDL State | DSM | CHECK the PRNDL for PARK position. If okay, CHECK the DSM transmission switch input status PID value for PARK/NEUTRAL. If the PID value is incorrect, CHECK circuit 1434 (LB/PK) for a fault between DSM C341d-17 and SJB C2280d-19. CHECK for SJB DTC B2066 or B2067. If present, REFER to AUTOMATIC TRANSAXLE/TRANSMISSION . CLEAR the DTC. REPEAT the selt-test. If PID value is correct, CHECK the DSM configuration and CONFIGURE, if necessary and RETEST. REFER to MODULE CONFIGURATION . If configured correctly and the DTC remains, INSTALL a new DSM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTC. REPEAT the selt-test. |
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.
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