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.
2002 Lincoln Navigator RWDFACTORY OEM SERVICE PROCEDURE
Generic Electronic Module DTCS
INSTRUMENT PANELS (GENERIC ELECTRONIC MODULE) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B1323 | Door Ajar Circuit Failure (Light Never On) | J |
| B1323 | Door Ajar Circuit Failure (Light Always On) | K |
| B1325 | Door Ajar Light Circuit Short To Power | J |
| B1342 | ECU Defective | Replace Generic Electronic Module GEM. See GENERIC ELECTRONIC MODULE |
| B1426 | Safety Belt Light Circuit Short To Power | H |
| B1428 | Safety Belt Light Circuit Failure (Light Always On) | I |
| P1804 | 4-Wheel Drive High Indicator Circuit Failure | N |
| P1806 | 4-Wheel Drive High Indicator Short To Power | N |
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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