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Home >> Jaguar >> 2011 >> XK 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Climate Control System - General Information -- XK/X150) >> Climate Control System - General Information >> Diagnosis And Testing >> Pinpoint Tests >> Pinpoint Test D: Low And High Pressure System Pressures Unstable Tests

Pinpoint Test D: Low And High Pressure System Pressures Unstable Tests

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  1. D1: LOW AND HIGH PRESSURE SYSTEM PRESSURES UNSTABLE TEST 1 
    1. Start the engine
    2. Set the air conditioning to on
    3. Check the pressure gauge readings
    4. Set the air conditioning to off
    5. Check the pressure gauge readings

    Do the pressure gauge readings equalise immediately when the air conditioning is set to off?

    • Yes  : Air conditioning compressor internal failure. Install a new air conditioning compressor
    • No  : Air or moisture present in the air conditioning system. Using the manufacturer approved equipment, recover the refrigerant. Install a new receiver drier. Evacuate and recharge the air conditioning system with the correct quantity of refrigerant and oil
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