
Begin by locating the main engine compartment power assembly near the battery. Inspect each terminal for corrosion and verify that relays controlling headlights, ignition, and cooling fans are seated securely.
Inside the passenger cabin, the central control panel manages circuits for climate, audio, and dashboard indicators. Use a multimeter to confirm voltage and ensure continuity before replacing any connectors.
Document the position and amperage of each component before removal. Follow the manufacturer’s specifications for all relays and terminals to prevent overloading circuits.
After maintenance, test all systems including lights, power windows, and infotainment modules. Keep a record of any adjustments for future troubleshooting and reference.
LX Sedan Electrical Panel Guide

Locate the main engine compartment power assembly near the battery and check each relay controlling ignition, headlights, and cooling fans. Inspect terminals for corrosion or loose connections and tighten or clean as needed. Follow these steps for accurate identification:
- Open the protective cover and note all labeled slots.
- Use a multimeter to measure voltage at each terminal.
- Check relays by swapping with a functioning identical component.
- Record amperage ratings to avoid installing mismatched replacements.
Interior Circuit Panel

The passenger cabin central panel manages circuits for:
- Climate control and ventilation modules
- Audio and infotainment systems
- Dashboard indicators and warning lights
- Power windows and door locks
Verify each slot with a test light before replacing any component. Document all changes to maintain accurate reference for future troubleshooting or maintenance tasks.
Locate Engine Compartment Power Box and Relays

Position yourself at the front of the vehicle and identify the main power assembly near the battery. Check each relay controlling ignition, headlights, and cooling fans for secure seating and clear labeling. Clean terminals with a contact cleaner to prevent voltage drops and ensure reliable operation.
Inspect smaller auxiliary modules that handle windshield wipers, horn, and fog lamps. Test each circuit with a multimeter or test light before replacing any component, and record the amperage rating of each slot to maintain proper electrical balance across the system.