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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 290 (ANTI-THEFT SYSTEM - PERIMETER)DIAGNOSIS AND TESTINGANTI-THEFT - PERIMETERLIGHTING CONTROL MODULE (LCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX
2010 Mercury Mariner Hybrid, AWD
Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index
2010 Mercury Mariner Hybrid, AWDSECTION Lighting Control Module (LCM) Diagnostic Trouble Code (DTC) Index
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
LIGHTING CONTROL MODULE (LCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Action |
|---|---|---|---|
| B1334 | Luggage Compartment Lid Ajar Circuit Short To Ground | LCM | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS . |
| B1342 | ECU is Defective | LCM | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new LCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test. |
| B1352 | Ignition Key-in Circuit Failure | LCM | REFER to STEERING COLUMN SWITCHES . |
| B1359 | Ignition RUN/ACCY Circuit Failure | LCM | REFER to STEERING COLUMN SWITCHES . |
| B1520 | Hood Switch Circuit Open | LCM | GO to PINPOINT TEST A . |
| B1555 | Ignition RUN/START Circuit Failure | LCM | REFER to STEERING COLUMN SWITCHES . |
| B1578 | Parking Lamp Input Short to Ground | LCM | REFER to EXTERIOR LIGHTING . |
| B1676 | Battery Voltage Out Of Range | LCM | REFER to CHARGING SYSTEM - GENERAL INFORMATION . |
| B2100 | Driver Door Key Cylinder Switch Failure | LCM | GO to PINPOINT TEST B . |
| B2108 | Luggage Compartment Anti-Theft Alarm Inhibit Switch Failure | LCM | GO to PINPOINT TEST D . |
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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.