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Home >> Nissan-Datsun >> 2012 >> 370Z Base, 2D Convertible, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1087 Through P2A03 >> DTC P1217: Engine Over Temperature >> Diagnosis Procedure

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. Make sure 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. Make sure that cooling fan operates.

      Is the inspection result normal? 

      YES: GO TO 2.

      NO: Go to "DIAGNOSIS PROCEDURE ".

  2. CHECK COOLING SYSTEM FOR LEAK-I

    Check cooling system for leak. Refer to INSPECTION .

    Is leakage detected? 

    YES: GO TO 3.

    NO: GO TO  4.

  3. CHECK COOLING SYSTEM FOR LEAK-II

    Check the following for leak.

    • Hose
    • Radiator
    • Water pump

    Repair or replace malfunctioning part.

  4. CHECK RADIATOR CAP

    Check radiator cap. Refer to RESERVOIR TANK CAP: INSPECTION .

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace radiator cap.

  5. CHECK THERMOSTAT

    Check thermostat. Refer to INSPECTION .

    Is the inspection result normal? 

    YES: GO TO 6.

    NO: Replace thermostat

  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.

  7. CHECK MAIN 12 CAUSES

    If the cause cannot be isolated, check the following.

    Engine Step Inspection item Equipment Standard Refer to
    OFF 1
    • Blocked radiator
    • Blocked condenser
    • Blocked radiator grille
    • Blocked bumper
    • Visual
    		 No blocking -
    2
    • Coolant mixture
    • Coolant tester
    		 "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
    		 107 kPa (1.1 kg/cm2 , 16 psi) (Limit) RESERVOIR TANK CAP: INSPECTION
    ON(2) 5
    • Coolant leaks
    • Visual
    		 No leaks 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 leak
    • 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 (55 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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