Inspection and Verification
Note. All Air Conditioning (A/C) related tests should be run in an ambient temperature of at least 10°C (50°F).
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of damage and system integrity. Visual Inspection Mechanical Electrical Coolant level Refrigerant leaks (UV lamp) Drive belt Compressor Cooling fan Control flap(s) Duct(s) Register(s) Cabin air filter Hose(s) Coolant pump Fuse(s) Circuit Blower motor Electrical connector(s) Compressor Cooling fan Actuators Climate control assembly
- Listen for any unusual noises during climate control system operation.
- Inspect the refrigerant system with an ultraviolet (UV) lamp for traces of UV sensitive leak trace dye.
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to the manufacturer approved diagnostic system.