Technician Handbook Air Conditioning for Collision Repair Basic AC System Checks (Continued) Engine Coolant Is the engine coolant temperature normal? Temperature • An overheated engine will not achieve full cooling performance. • This could happen if the cooling system wasn’t filled properly or if air flow is restricted to the Radiator. Temperature Is the temperature Control turned all the way down? Control • The Temperature Control should be set to its lowest setting (not MAX A/C) to prevent adding any heat to the air flow. SERVICE TIP During inspection, take note of the position and location of the Temperature Sensor or Temperature Sensing Bulb before disassembly.
It is essential to reinstall them correctly. Collision Repair & Refinish Training 25