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Home >> Infiniti >> 2017 >> QX50 RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC / Circuit Diagnosis >> DTC P1217: Engine Over Temperature >> Component Function Check >> Diagnostic Test
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Diagnostic Test

  1. PERFORM COMPONENT FUNCTION CHECK-I

    WARNING:

    Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pressure fluid escaping from the radiator.

    Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up pressure to escape. Then turn the cap all the way off.

    Check the coolant level in the reservoir tank and radiator.

    G04074236Courtesy of NISSAN NORTH AMERICA, INC.

    Allow engine to cool before checking coolant level. 

    Is the coolant level in the reservoir tank and/or radiator below the proper range?

    YES 

    Go to DIAGNOSIS PROCEDURE .

    NO 

    GO TO STEP 2  .

  2. PERFORM COMPONENT FUNCTION CHECK-II

    Confirm whether customer filled the coolant or not.

    Did customer fill the coolant?

    YES 

    Go to DIAGNOSIS PROCEDURE .

    NO 

    GO TO STEP 3  .

  3. PERFORM COMPONENT FUNCTION CHECK-III

    G-20With CONSULT 

    1. Turn ignition switch ON.
    2. Perform "FAN DUTY CONTROL" in "ACTIVE TEST" mode with CONSULT.
    3. Make sure that cooling fan speed varies according to the percentage.

    G-21Without CONSULT 

    Perform IPDM E/R auto active test and check cooling fan motors operation, refer to DIAGNOSIS DESCRIPTION .

    Is the inspection result normal?

    YES 

    INSPECTION END

    NO 

    Go to DIAGNOSIS PROCEDURE .