To locate it, you'll need to:
1. Remove the inner door panel: This involves removing screws around the door panel edges and possibly some plastic clips. Consult a repair manual specific to your 1999 Chrysler LHS for precise instructions. Be careful not to damage the panel or wiring during removal.
2. Access the door latch mechanism: Once the inner door panel is removed, you'll see the door latch mechanism. It's a fairly complex assembly.
3. Identify the sensor: The sensor is often a small, usually plastic switch directly on or very near the latch mechanism. It might be a microswitch (a small switch that activates with slight pressure) and will likely have two wires connected to it. It's usually triggered when the door is latched or unlatched, indicating whether the door is open or closed. It might be a more integrated part of the mechanism and not easily identified as a separate switch.
4. Check for wiring: Trace the wires from the suspected sensor to the car's main wiring harness. A broken wire could also cause a false "door ajar" warning.
Without a repair manual: Finding the exact location without a repair manual is difficult. A visual inspection after removing the door panel is your best bet. Look for a small switch that moves when you operate the door latch.
Important Note: If you're not comfortable working on car electrical systems, it's best to take your car to a qualified mechanic. Incorrectly diagnosing or repairing the sensor could lead to further problems. A repair manual or online diagrams specifically for your year and model will be extremely helpful.
