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Home >> Nissan-Datsun >> 2006 >> Murano SE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1217 To P2A03 >> DTC P1217 Engine Over Temperature >> Diagnostic Procedure >> Notes

Diagnostic Procedure: Notes

  1. INSPECTION START 

    Do you have CONSULT-II? 

    Yes or No 

    Yes: GO TO 2.

    No: GO TO  4.

  2. CHECK COOLING FAN LOW SPEED OPERATION 

    WITH CONSULT-II 

    1. Start engine and let it idle.
    2. Select "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-II and touch "LOW" on the CONSULT-II screen.
    3. Make sure that cooling fans-1 and -2 operate at low speed.

      OK or NG 

    OK: GO TO 3.

    NG: Check cooling fan low speed control circuit. (Go to "PROCEDURE A ".)

    Fig 1: CONSULT-II Display - Active Test
    G04216372Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK COOLING FAN HIGH SPEED OPERATION 

    WITH CONSULT-II 

    1. Touch "HIGH" on the CONSULT-II screen.
    2. Make sure that cooling fans-1 and -2 operate at higher speed than low speed.

    OK or NG 

    OK: GO TO  6.

    NG: Check cooling fan high speed control circuit. (Go to "PROCEDURE B ".)

    Fig 2: CONSULT-II Display - Active Test
    G04216373Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK COOLING FAN LOW SPEED OPERATION 

    Without CONSULT-II

    1. Start engine and let it idle.
    2. Turn air conditioner switch ON.
    3. Turn blower fan switch ON.
    4. Make sure that cooling fans-1 and -2 operate at low speed.

    OK or NG 

    OK: GO TO 5.

    NG: Check cooling fan low speed control circuit. (Go to "PROCEDURE A ".)

    Fig 3: Checking Cooling Fan Low Speed Operation
    G04216374Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK COOLING FAN HIGH SPEED OPERATION 

    Without CONSULT-II 

    1. Turn ignition switch OFF.
    2. Turn air conditioner switch and blower fan switch OFF.
    3. Disconnect engine coolant temperature sensor harness connector.
    4. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
    5. Restart engine and make sure that cooling fans-1 and -2 operate at higher speed than low speed.

    OK or NG 

    OK: GO TO 6.

    NG: Check cooling fan high speed control circuit. (Go to "PROCEDURE B ".)

    Fig 4: Checking Cooling Fan Low Speed Operation
    G04216375Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK COOLING SYSTEM FOR LEAK 

    Refer to "LEAK CHECK ".

    OK or NG 

    OK: GO TO 7.

    NG: Check the following for leak. Refer to "LEAK CHECK ".

    • Hose
    • Radiator
    • Water pump
  7. CHECK RADIATOR CAP 

    Refer to "CHECKING RADIATOR CAP ".

    OK or NG 

    OK: GO TO 8.

    NG: Replace radiator cap.

  8. CHECK COMPONENT PARTS 

    Check the following.

    Thermostat. Refer to "WATER INLET AND THERMOSTAT ASSEMBLY ".

    Engine coolant temperature sensor. Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 9.

    NG: Replace malfunctioning component.

  9. CHECK MAIN 12 CAUSES 

    If the cause cannot be isolated, go to "MAIN 12 CAUSES OF OVERHEATING ".

    : INSPECTION END 

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