Symptom Chart

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2015 Land Rover Range Rover, and 2014 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM	POSSIBLE CAUSES	ACTION
No refrigerant in air conditioning system (no pressure registered on gauges)	Refrigerant leak	GO to PINPOINT TEST A .
Air conditioning compressor clutch not engaging	Air conditioning compressor clutch circuit short circuit to ground, short circuit to power, open circuit, high resistance Refrigerant undercharged	Using the manufacturer approved diagnostic system, check the automatic temperature control module for related DTCs and refer to the relevant DTC index GO to PINPOINT TEST B . Retest, if fault persists GO to PINPOINT TEST H .
Air conditioning inoperative (no change in pressure when setting the air conditioning to on)	Climate control system fault Air conditioning compressor internal failure	Using the manufacturer approved diagnostic system, check the automatic temperature control module for related DTCs and refer to the relevant DTC index GO to PINPOINT TEST C .
Air conditioning operates briefly and then switches off	Electric cooling fan inoperative Air conditioning condenser airflow obstructed Refrigerant overcharged	Check the operation of the electric cooling fan Check the air conditioning condenser for external obstructions Using the manufacturer approved equipment, recover the refrigerant. Evacuate and recharge the air conditioning system with the correct quantity of refrigerant and oil
High and low pressure system pressures unstable	Refrigerant contaminated Air conditioning compressor internal failure	GO to PINPOINT TEST D .
High and low pressure system pressures normal and insufficient cooling	Excessive volume of oil in the refrigerant or refrigerant contaminated	Using the manufacturer approved equipment, recover the refrigerant. Evacuate and recharge the air conditioning system with the correct quantity of refrigerant and oil
High and low pressure system pressures too high	Electric cooling fan inoperative Air conditioning condenser airflow obstructed Thermostatic expansion valve internal failure Refrigerant overcharged Air conditioning compressor internal failure	GO to PINPOINT TEST E .
High and low pressure system pressures too low	Refrigerant undercharged Low pressure pipe damaged/restricted	GO to PINPOINT TEST B .
Low pressure system pressure too high and high pressure system pressure too low	Air conditioning compressor electronic control valve circuit short circuit to ground, short circuit to power, open circuit, high resistance Air conditioning compressor electronic control valve internal failure	GO to PINPOINT TEST F .
Low pressure system pressure too low and high pressure system pressure too high and frost present on the low pressure liquid pipe to the condenser	Low pressure liquid pipe restricted Receiver drier restricted	Check the low pressure liquid pipe for damage and restrictions. Install a new pipe as necessary Install a new receiver drier as necessary
Noise from air conditioning system	Air conditioning compressor pulley bearing Air conditioning compressor pulley foul condition Air conditioning compressor clutch operation excessively noisy Air conditioning compressor internal failure Thermostatic expansion valve internal failure Refrigerant undercharged Refrigerant overcharged Air conditioning pipe(s) fouling body	GO to PINPOINT TEST G .