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Climate Control System - Diagnostic Procedures

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NOTE: All air conditioning (A/C) related tests should be run in an ambient temperature of at least 10°C (50°F).
  1. Verify the customer concern by operating the system.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
  3. Listen for any unusual noises during climate control system operation.
  4. Inspect the air conditioning (A/C) system with an ultraviolet (UV) lamp for traces of UV sensitive leak trace dye.
    Visual Inspection Chart

    Mechanical Electrical
    • Coolant level
    • Refrigerant (UV lamp)
    • Drive belt
    • Control flap(s)
    • Duct(s)
    • Register(s)
    • Cabin air filter
    • Hose(s)
    • Dual coolant flow valve
    • Auxiliary coolant flow pump
    • Water pump
    • Fuse(s)
    • Circuit
    • Blower motors
    • Electrical connector(s)
    • Compressor
    • Cooling fan
    • Actuators
    • Climate control assembly
    • Dual coolant flow valve
    • Auxiliary coolant flow pump
  5. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  6. If the cause is not visually evident, verify the symptom and refer to the Jaguar Approved Diagnostic System.