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 MANUALSLINCOLN2009NAVIGATOR L RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXSEATING SYSTEMS DTCS (A000346331)DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DTC CHART
2009 Lincoln Navigator L RWD
Dual Climate Controlled Seat Module (DCSM) DTC Chart
2009 Lincoln Navigator L RWDSECTION Dual Climate Controlled Seat Module (DCSM) DTC Chart
DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Retrieved | Action |
|---|---|---|---|
| B103B | Thermoelectric Driver Overcurrent Low | On-Demand and Continuous | Go To PINPOINT TEST AB . |
| B103C | Thermoelectric Driver Open Load | On-Demand and Continuous | Go To PINPOINT TEST AC . |
| B103D | Blower Driver Overtemperature | On-Demand and Continuous | Go To PINPOINT TEST AD . |
| B1111 | Driver Thermoelectric Device Control Overtemperature Fault | On-Demand and Continuous | Go To PINPOINT TEST AB . |
| B1113 | Passenger Thermoelectric Device Control Overtemperature Fault | On-Demand and Continuous | Go To PINPOINT TEST AE . |
| B111B | Passenger Thermoelectric Driver Overcurrent Low | On-Demand and Continuous | Go To PINPOINT TEST AE . |
| B111C | Passenger Thermoelectric Driver Open Load | On-Demand and Continuous | Go To PINPOINT TEST AF . |
| B111D | Passenger Blower Driver Overtemperature | On-Demand and Continuous | Go To PINPOINT TEST AG . |
| B1342 | ECU is Faulted | On-Demand and Continuous | INSTALL a new Dual Climate Controlled Seat Module (DCSM). REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . |
| B19A1 | Passenger Seat Cushion Blower Speed Short to Battery | On-Demand and Continuous | Go To PINPOINT TEST AH . |
| B19A2 | Passenger Seat Back Blower Speed Short to Battery | On-Demand and Continuous | Go To PINPOINT TEST AI . |
| B19A3 | Driver Seat Cushion Blower Speed Short to Battery | On-Demand and Continuous | Go To PINPOINT TEST AJ . |
| B19A4 | Driver Seat Back Blower Speed Short to Battery | On-Demand and Continuous | Go To PINPOINT TEST AK . |
| B19A5 | Passenger Seat Cushion Blower Speed Short to Ground | On-Demand and Continuous | Go To PINPOINT TEST AL . |
| B19A6 | Passenger Seat Back Blower Speed Short to Ground | On-Demand and Continuous | Go To PINPOINT TEST AM . |
| B19A7 | Driver Seat Cushion Blower Speed Short to Ground | On-Demand and Continuous | Go To PINPOINT TEST AN . |
| B19A8 | Driver Seat Back Blower Speed Short to Ground | On-Demand and Continuous | Go To PINPOINT TEST AO . |
| B2477 | Module Configuration Failure | On-Demand and Continuous |
NOTE:
This DTC indicates Programmable Module Installation (PMI) has not been done to a newly installed module or configuration data has been lost.
CARRY OUT PMI on the DCSM . REFER to MODULE CONFIGURATION . REPEAT the self-test. If PMI is successful, the DTC will not be present. |
| B2486 | Climate Control Seat Module Voltage Out of Range | On-Demand and Continuous | Go To PINPOINT TEST AP . |
| B2729 | Cushion Over-Temp Detected (Driver) | On-Demand and Continuous | Go To PINPOINT TEST AQ . |
| B272A | Passenger Cushion Over-Temp Detected | On-Demand and Continuous | Go To PINPOINT TEST AR . |
| B272B | Passenger Back Over-Temp Detected | On-Demand and Continuous | Go To PINPOINT TEST AS . |
| B272C | Driver Differential Temperature Fault | On-Demand and Continuous | Go To PINPOINT TEST AT . |
| B272D | Passenger Differential Temperature Fault | On-Demand and Continuous | Go To PINPOINT TEST AU . |
| B272E | Driver Ignition Run/Blower Circuit Short to Ground (this DTC sets for an open or short to voltage) | On-Demand and Continuous | Go To PINPOINT TEST AV . |
| B272F | Passenger Ignition Run/Blower Circuit Short to Ground (this DTC sets for an open or short to voltage) | On-Demand and Continuous | Go To PINPOINT TEST AW . |
| B2730 | Back Over-Temp Detected (Driver) | On-Demand and Continuous | Go To PINPOINT TEST AX . |
| U2050 | No Application Present | Continuous | INSTALL a new DCSM . REFER to DUAL CLIMATE CONTROLLED SEAT MODULE (DCSM) . REPEAT the self-test. |
| All Other DTCs | - | On-Demand and Continuous | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES . |
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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.