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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System - KA24DE >> DTC P0217: Coolant OVERTEMPERATURE Enrichment Protection >> Overall Function Check
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Overall Function Check

Use this procedure to check the overall function of the coolant over temperature enrichment protection 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 the 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.
  1. Check the coolant level and mixture ratio (using coolant tester) in the reservoir tank and radiator.

    Allow engine to cool before checking coolant level and mixture ratio. 

    • If the coolant level in the reservoir and/or radiator is below the proper range, go to "DIAGNOSTIC PROCEDURE .
    • If the coolant mixture ratio is out of the range of 45 to 55%, replace the coolant in the following procedure CHANGING ENGINE COOLANT .
    1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute like pouring coolant from a kettle. Be sure to use coolant with the proper mixture ratio. Refer to ANTI-FREEZE COOLANT MIXTURE RATIO .
    2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
    3. After checking or replacing coolant, go to step  3 below.
  2. Ask the customer if engine coolant has been added. If it has been added, go to "DIAGNOSTIC PROCEDURE . After repair, go to the next step.
  3. Start engine and let it idle.
  4. Make sure that A/C switch is "OFF" and air conditioner is not operating. If NG, check air conditioner circuit. Refer to TROUBLE DIAGNOSIS . After repair, go to the next step.
  5. Start engine and make sure that cooling fan operates.

    Be careful not to overheat engine. 

    If NG, check cooling fan. Refer to "COOLING FAN (CRANKSHAFT DRIVEN) . After repair, go to the next step.

  6. Check for blocked coolant passage.
    1. Warm up engine to normal operating temperature, then grasp radiator upper hose and lower hose and make sure that coolant flows.

      If NG, go to DIAGNOSTIC PROCEDURE . After repair, go to the next step.

      Be extremely careful not to touch any moving or adjacent parts. 

  7. Check for blocked radiator air passage.
    1. When aftermarket fog lamps have been installed, check for damaged fans and clogging in the condenser and radiator.
    2. Check the front end for clogging caused by insects or debris.
    3. Check for improper fitting of front-end cover, damaged radiator grille or bumper, damaged vehicle front.

      If NG, take appropriate action and then go to the next step.

  8. Check function of ECT sensor.

    Refer to COMPONENT INSPECTION .

    If NG, replace ECT sensor and go to the next step.

  9. Check ignition timing. Refer to Basic Inspection .

    Make sure that ignition timing is 20°+/-2° at idle.

    If NG, adjust ignition timing and then recheck.

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