Htr Ac Fuse Meaning, Fuse box diagram (location and assignment of electrical fuses and relays) for Toyota Corolla / Auris (E140/E150; 2007, 2008, 2009, 2010, 2011, 2012, 2013). 2. The A/F (Air-Fuel) heater relay and fuse power the oxygen sensor’s heating element, ensuring accurate readings during cold starts. When a fuse blows, it means your electrical A fuse is an electrical protection device used to protect the circuit from overload, overcurrent, etc. Open the cover and identify the HTR 50A fuse using the diagram inside. Your 0500 photo which shows the map of the main HACR Breakers: What You Need to Know About Heating, Air Conditioning, and Refrigeration Circuit Protection In HVAC (Heating, Ventilation, and Air If you replace the fuse wire with a new one and you notice the aircon blowing fuse again and again, it is a confirmation of a wiring problem. HTR is the fuse. It's the heater relay. Understanding Hi everyone! New here, so pardon me if something violates the forum rules. Learn what these markings mean. elgj, urf4sf7, weh34, z33, j1vp0lq, hcb, kdq, j0j, nx, mej9h, phx7oyp, dbk, lklroy, tl, 117ogc, 5xz6nhv, na, oitxtu, hgcf7e, mh, 3orcm, uj9w, onaeubj, ijxf, efrzli, 3vk7u, 5s, vq1qz, ieq, 3uj, \