This manual covers the Electrical Wiring Diagrams (EWD) for the Toyota Highlander, produced between the 2013 and 2017 model years, specifically for chassis codes ASU50 and GSU55. The Toyota Highlander is a mid-size crossover SUV renowned for its reliability, family-friendly features, and comfortable ride, consistently earning high marks from consumer organizations. This generation of the Highlander, which bridges the end of the second generation and the beginning of the third, offers robust performance with available 3.5L V6 or 2.7L 4-cylinder engines, paired with a 6-speed automatic transmission, and is offered in both Front-Wheel Drive and All-Wheel Drive configurations. Its strong safety ratings and comprehensive suite of active and passive safety systems underscore Toyota's commitment to occupant protection.

This Electrical Wiring Diagram manual is an essential resource for owners, independent repair shops, and automotive technicians. It provides comprehensive schematics for the vehicle's complete electrical system, including power distribution, engine and transmission controls, chassis electronics, body systems, HVAC, lighting, audio, and safety features such as ABS, VSC, and airbags. The manual facilitates accurate diagnosis and repair by offering detailed circuit diagrams, component locations, connector pinouts, troubleshooting flowcharts, and diagnostic trouble code references. Its digital format ensures clarity and ease of use for effectively maintaining and repairing the electrical components of your Toyota Highlander.