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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Cooling - INGENIUM I4 2.0L Petrol -- XF/(X260)) >> Engine Cooling - INGENIUM I4 2.0L Petrol (G2006213) >> Diagnosis And Testing >> Engine Cooling >> Pinpoint Tests >> Pinpoint Test B: The Engine Overheats

Pinpoint Test B: The Engine Overheats

WARNING: This page is about a different variant/trim than selected.
  1. B1: CHECK COOLANT 
    WARNING: The cooling system is pressurized! Make sure the reservoir cap is never released until the system has cooled. Failure to follow these instructions may result in personal injury.
    1. Check the coolant level and condition.

    Does the system contain sufficient coolant of the correct specification?

    Yes 

    GO to  B2.

    No 

    Top-up and fill the cooling system to the correct level with the correct specification fluid as necessary. Check for coolant loss. GO to PINPOINT TEST A .

  2. B2: CHECK COOLANT EXPANSION TANK PRESSURE CAP 
    1. Check the coolant expansion tank pressure cap for damage/correct operation. REFER to the coolant expansion tank pressure cap pressure test in this article.

    Is the coolant expansion tank pressure cap operating correctly?

    Yes 

    GO to  B3.

    No 

    INSTALL a new coolant expansion tank pressure cap. TEST the system for correct operation.

  3. B3: CHECK THERMOSTAT 
    1. Check the thermostat for correct operation. REFER to the thermostat component test in this article.

    Is the thermostat operating correctly?

    Yes 

    GO to PINPOINT TEST C .

    No 

    INSTALL a new thermostat. TEST the system for correct operation.

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