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.
2003 Mercury MarauderFACTORY OEM SERVICE PROCEDURE
Power Windows DTCS
POWER WINDOWS DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1342 | ECU is Defective | LCM | INSTALL a new LCM. GO to MULTIFUNCTION ELECTRONIC MODULE . |
| B1343 | Heated Back Light Input Circuit Failure | LCM | Go To PINPOINT TEST E . |
| B1344 | Heated Back Light Input Circuit Open | LCM | Go To PINPOINT TEST E . |
| B1345 | Heated Back Light Input Circuit Short to Ground | LCM | Go To PINPOINT TEST E . |
| B1555 | Ignition RUN/START Circuit Failure | LCM | GO to STEERING COLUMN SWITCHES . |
| B1557 | Ignition RUN/START Circuit Short to Battery | LCM | GO to STEERING COLUMN SWITCHES . |
Factory Service Tools
Use the Manual With the Right Hardware
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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.