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Home >> Infiniti >> 2018 >> QX80 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 2) >> Component/Circuit Diagnosis >> Electrically-Controlled Cooling Fan Coupling >> Component Function Check
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Component Function Check

  1. CHECK COOLING FAN FUNCTION 

    SYMBOL WITH CONSULT

    1. Start the engine.
    2. Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode with CONSULT.
    3. Check that cooling fan speed varies according to the percentage.
      NOTE: Speed changes gradually as the percentage changes.

    SYMBOL WITHOUT CONSULT

    1. Start the engine and warm up the engine until engine coolant temperature reaches at least 98 deg. C (209 deg. F).
    2. Check that cooling fan speed increase.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Proceed to Diagnosis Procedure .

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