Pinpoint Test E: Low And High Pressure System Pressures Too High Tests
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
- E1: LOW AND HIGH PRESSURE SYSTEM PRESSURES TOO HIGH TEST 1
- Start the engine
- Set the air conditioning to on
- Check the operation of the electric cooling fan
Is the electric cooling fan operating?
- Yes : GO to E2.
- No : Check for foreign objects jamming the electric cooling fan. Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the electric cooling fan circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- E2: LOW AND HIGH PRESSURE SYSTEM PRESSURES TOO HIGH TEST 2
- Stop the engine
- Check the air conditioning condenser for external obstructions
Are any external obstructions present?
- Yes : Repair as necessary
- No : GO to E3.
- E3: LOW AND HIGH PRESSURE SYSTEM PRESSURES TOO HIGH TEST 3
- Start the engine
- Set the air conditioning to on
- Check the pressure gauge readings
- Set the air conditioning to off
- Check the pressure gauge readings
Do the pressure gauge readings equalize immediately when the air conditioning is set to off?
- Yes : Air conditioning compressor internal failure. Install a new air conditioning compressor
- No : GO to E4.
- E4: LOW AND HIGH PRESSURE SYSTEM PRESSURES TOO HIGH TEST 4
- Stop the engine
- Using the manufacturer approved equipment, recover the refrigerant
- Compare the weight of recovered refrigerant to that specified for the vehicle
Was the weight of the recovered refrigerant greater than specified for the air conditioning system?
- Yes : Using the manufacturer approved equipment, evacuate and recharge the air conditioning system with the correct quantity of refrigerant and oil
- No : Thermostatic expansion valve internal failure. Install a new thermostatic expansion valve