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Home >> Nissan-Datsun >> 2009 >> Maxima S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0451 To P1217 >> P1217 Engine Over Temperature >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK COOLING FAN OPERATION

    With CONSULT-III 

    1. Turn ignition switch ON.
    2. Perform "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-III.
    3. Check that cooling fans-1 and -2 operate at each speed (LOW/MID/HI).

    Without CONSULT-III 

    1. Perform IPDM E/R auto active test and check cooling fan motors operation, refer to "DIAGNOSIS DESCRIPTION ".
    2. Check that cooling fans-1 and -2 operate at each speed (Low/Middle/High).

    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 "SYSTEM 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 "SYSTEM INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace radiator cap.

  5. CHECK THERMOSTAT

    Check thermostat. Refer to "REMOVAL AND INSTALLATION ".

    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.

    STANDARD REFERENCE CHART

    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
    3
    • Coolant level
    • Visual
    		 Coolant up to MAX level in reservoir tank and radiator filler neck "SYSTEM INSPECTION "
    4
    • Radiator cap
    • Pressure tester
    		 "SYSTEM INSPECTION "
    ON(1) 5
    • Coolant leakage
    • Visual
    		 No leakage "SYSTEM INSPECTION "
    ON(1) 6
    • Thermostat
    • Touch the upper and lower radiator hoses
    		 Both hoses should be hot "REMOVAL AND INSTALLATION "
    ON(2) 7
    • Cooling fan
    • CONSULT-III
    		 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 "SYSTEM INSPECTION "
    OFF(4)4 10
    • Coolant return from reservoir tank to radiator
    • Visual
    		 Should be initial level in reservoir tank "SYSTEM INSPECTION "
    OFF 11
    • Cylinder head
    • Straight gauge feeler gauge
    		 0.1 mm (0.004 in) Maximum distortion (warping) "INSPECTION AFTER DISASSEMBLY "
    12
    • Cylinder block and pistons
    • Visual
    		 No scuffing on cylinder walls or piston "INSPECTION "
    (1) Engine running at 3, 000 RPM for 10 minutes.

    (2) Turn the ignition switch ON.

    (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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