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 INDEXHANDLES, LOCKS, LATCHES & ENTRY SYSTEMS DTCSSMART JUNCTION BOX (SJB) DTC CHART
2009 Lincoln Navigator L RWD
Smart Junction Box (SJB) DTC Chart
2009 Lincoln Navigator L RWDSECTION Smart Junction Box (SJB) DTC Chart
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1138 | Memory Full | The Smart Junction Box (SJB) has 4 Integrated Keyhead Transmitters (IKTs) stored in memory and cannot program any more IKTs into the SJB memory. PROGRAM all of the customers IKTs (up to 4). REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . |
| B1139 | Invalid Transmitter Identification Code | Go To PINPOINT TEST J . |
| B1624 | Lamp Keypad Output Open Circuit | Go To PINPOINT TEST I . |
| B1626 | Lamp Keypad Output Short Circuit To Ground | Go To PINPOINT TEST I . |
| B2276 | Less Than 2 Transmitters Programmed | PROGRAM all of the customers IKTs . REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) . TEST the system for normal operation. |
| B2425 | Remote Keyless Entry Out of Synchronization | Go To PINPOINT TEST J . |
| B2666 | Liftgate Release Switch Circuit Failure | Go To PINPOINT TEST G . |
| B2667 | Lift glass Release Switch Circuit Failure | Go To PINPOINT TEST F . |
| B273A | Liftgate Release Output Circuit Shorted to Ground | Go To PINPOINT TEST G . |
| B273B | Liftgate Release Output Circuit Open or Shorted to Battery Voltage | Go To PINPOINT TEST G . |
| B2A25 | Trim Panel Lock Switch Circuit Failure | Go To PINPOINT TEST E . |
| B2A26 | Keypad Switch Circuit Failure | Go To PINPOINT TEST H . |
| All other DTCs | - | REFER to the Diagnostic Trouble Code (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.