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Home >> Nissan-Datsun >> 2004 >> Sentra Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - QG18DE >> DTC P1217: Engine Over Temperature >> Overall Function Check
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Overall Function Check

Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be confirmed.

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.

With CONSULT-II 

  1. Check the coolant level in the reservoir tank and radiator.

    Allow engine to cool before checking coolant level. 

    If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to DIAGNOSTIC PROCEDURE .

  2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to DIAGNOSTIC PROCEDURE .
  3. Turn ignition switch ON.
    Fig 1: Identifying Coolant Level In Reservoir Tank
    G00773076Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Perform "COOLING FAN" in "ACTIVE TEST" mode with CONSULT-II.
  5. If the results are NG, go to DIAGNOSTIC PROCEDURE .
    Fig 2: Displaying ACTIVE TEST Mode
    G00773077Courtesy of NISSAN MOTOR CO., U.S.A.

With GST 

  1. Check the coolant level in the reservoir tank and radiator.

    Allow engine to cool before checking coolant level. 

    If the coolant level in the reservoir tank and/or radiator is below the proper range, skip the following steps and go to DIAGNOSTIC PROCEDURE .

  2. Confirm whether customer filled the coolant or not. If customer filled the coolant, skip the following steps and go to DIAGNOSTIC PROCEDURE .
  3. Start engine.
    Fig 3: Identifying Cooling Fan
    G00773078Courtesy of NISSAN MOTOR CO., U.S.A.

    Be careful not to overheat engine. 

  4. Set temperature control lever to full cold position.
  5. Turn air conditioner switch ON.
  6. Turn blower fan switch ON.
  7. Run engine at idle for a few minutes with air conditioner operating.

    Be careful not to overheat engine. 

  8. Make sure that cooling fan operates at low speed.

    If NG, go to DIAGNOSTIC PROCEDURE .

    If OK, go to the following step.

  9. Turn ignition switch OFF.
  10. Turn air conditioner switch and blower fan switch OFF.
  11. Disconnect engine coolant temperature sensor harness connector.
  12. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
  13. Restart engine and make sure that cooling fan operates at higher speed than low speed.

    Be careful not to overheat engine. 

  14. If NG, go to DIAGNOSTIC PROCEDURE .
    Fig 4: Connecting 150Ω Resistor To Engine Coolant Temperature Sensor Harness Connector
    G00773079Courtesy of NISSAN MOTOR CO., U.S.A.
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