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Home >> Infiniti >> 2013 >> FX50 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1212 Through P2138 >> DTC P1217: Engine Over Temperature >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK COOLING FAN OPERATION 

    With CONSULT

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

    Without CONSULT

    1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to "DIAGNOSIS DESCRIPTION ".
    2. Check that cooling fan operates.

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Go to "DIAGNOSIS PROCEDURE ".

  2. CHECK COOLING SYSTEM FOR LEAKAGE-I 

    Check cooling system for leakage. Refer to "INSPECTION ".

    Is leakage detected? 

    YES: GO TO 3.

    NO: GO TO  4.

  3. CHECK COOLING SYSTEM FOR LEAKAGE-II 

    Check the following for leakage.

    • Hose
    • Radiator
    • Water pump

      : Repair or replace malfunctioning part.

  4. CHECK RADIATOR CAP 

    Check radiator cap. Refer to "RADIATOR CAP: INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace radiator cap. Refer to "EXPLODED VIEW ".

  5. CHECK THERMOSTAT 

    Check thermostat. Refer to "INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Replace thermostat. Refer to "EXPLODED VIEW ".

  6. CHECK ENGINE COOLANT TEMPERATURE SENSOR 

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace engine coolant temperature sensor. Refer to "EXPLODED VIEW ".

  7. CHECK MAIN 12 CAUSES 

    If the cause cannot be isolated, check the following.

    Engine Step Inspection item Equipment Standard Reference
    OFF 1
    • Blocked radiator
    • Blocked condenser
    • Blocked radiator grille
    • Blocked bumper
    • Visual
    		 No blocking -
    2
    • Coolant mixture
    • Coolant tester
    		 Refer to "FOR NORTH AMERICA: ANTI-FREEZE COOLANT MIXTURE RATIO ".
    3
    • Coolant level
    • Visual
    		 Coolant up to MAX level in reservoir tank and radiator filler neck "INSPECTION "
    4
    • Radiator cap
    • Pressure tester
    		 Refer to "RADIATOR CAP: INSPECTION ".
    ON(2) 5
    • Coolant leakage
    • Visual
    		 No leakage "INSPECTION "
    ON(2) 6
    • Thermostat
    • Touch the upper and lower radiator hoses
    		 Both hoses should be hot "INSPECTION "
    ON(1) 7
    • Cooling fan
    • CONSULT
    		 Operating "COMPONENT FUNCTION CHECK "
    OFF 8
    • Combustion gas leakage
    • Color checker chemical tester 4 Gas analyzer
    		 Negative -
    ON(3) 9
    • Coolant temperature gauge
    • Visual
    		 Gauge less than 3/4 when driving -
    • Coolant overflow to reservoir tank
    • Visual
    		 No overflow during driving and idling "INSPECTION "
    OFF(4) 10
    • Coolant return from reservoir tank to radiator
    • Visual
    		 Should be initial level in reservoir tank "INSPECTION "
    OFF 11
    • Cylinder head
    • Straight gauge feeler gauge
    		 0.1 mm (0.004 in) Maximum distortion (warping) "INSPECTION "
    12
    • Cylinder block and pistons
    • Visual
    		 No scuffing on cylinder walls or piston "INSPECTION "
    (1) Turn the ignition switch ON.
    (2) Engine running at 3, 000 RPM for 10 minutes.
    (3) Drive at 90 km/h (56 MPH) for 30 minutes and then let idle for 10 minutes.
    (4) After 60 minutes of cool down time.

    For more information, refer to "TROUBLESHOOTING CHART ".

    : INSPECTION END

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