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Home >> Nissan-Datsun >> 2003 >> Frontier Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0217: Coolant OVERTEMPERATURE Enrichment Protection >> DTC Confirmation Test
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DTC Confirmation Test

CAUTION: If DTC is valid, replace coolant and engine oil. Ensure coolant is the proper mixture ratio. Fill system to proper level at a speed of 2 liters per minute. Ensure system is filled properly.
NOTE: Use the following test to check overall function of coolant overtemperature enrichment protection. During this test, DTC may not be confirmed.
  1. Allow engine to cool. Check coolant level in radiator and reservoir tank. If coolant level is okay, go to next step. If coolant level is low, go to DIAGNOSTIC PROCEDURE  .
  2. Check coolant mixture ratio. If coolant mixture ratio is 45-55 percent, go to next step. If coolant mixture ratio is not 45-55 percent, change coolant, then go to step  4 .
  3. If coolant was filled by customer, go to DIAGNOSTIC PROCEDURE  . If coolant was not filled by customer, go to next step.
  4. Start engine and let it idle. Ensure A/C is turned off and A/C is not operating. If A/C is operating, repair A/C circuit as necessary. See appropriate article in AIR CONDITIONING & HEATING. Go to next step.
    5. NOTE: Be careful not to overheat engine.
  5. Start engine. Ensure cooling fan operates. If cooling fan operates, go to next step. If cooling fan does not operate, go to DIAGNOSTIC PROCEDURE  . After repair, go to next step.
  6. Check for blocked coolant passages. Check for blocked radiator air passage (debris, body or bumper damage, improperly installed body masks or fog lights, etc.). If problem is found, repair as necessary, then go to next step. If problem is not found, go to next step.
  7. Remove ECT sensor, and place in heated water. For location, see Figure or Figure . Measure resistance between sensor terminals, with water at specified temperatures. See ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE  table under DIAGNOSTIC PROCEDURE under DTC P0117: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW INPUT OR DTC P0118: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH INPUT  . If resistance is as specified, go to next step. If resistance is not as specified, replace ECT sensor.
  8. Check ignition timing. See ON-VEHICLE ADJUSTMENTS article. Ignition timing should be 18-22 degrees BTDC at idle (2.4L models) or 8-12 degrees BTDC at idle (3.3L models). If ignition timing is okay, system is okay at this time. If ignition timing is not okay, adjust ignition timing and recheck.
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