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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0217: Coolant OVERTEMPERATURE Enrichment Protection (2.5L) >> DTC Confirmation Test (Using Generic Scan Tool)
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DTC Confirmation Test (Using Generic Scan Tool)

WARNING: This page is about a different car, the 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
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. Turn A/C switch to OFF position. Ensure A/C system is not operating. If A/C is operating, repair A/C circuit. See appropriate article in AIR CONDITIONING & HEATING. If A/C system is not operating, go to next step.
  5. Turn ignition off. Disconnect ECT sensor harness connector. See Figure. Connect a 150 ohm resistor between ECT sensor harness connector terminals. Start engine. If cooling fans operate, go to next step. If cooling fans do not operate, go to DIAGNOSTIC PROCEDURE .
  6. Check for blocked coolant or radiator air passage. If problem is found, repair as necessary. If problem is not found, go to next step.
  7. Remove ECT sensor, and place in heated water. For location, see Figure. Measure resistance between sensor terminals, with water at specified temperatures. See ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE  table under DIAGNOSTIC PROCEDURE under DTC P0117 OR DTC P0118: ENGINE COOLANT TEMPERATURE SENSOR. 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 10-20 degrees BTDC at idle. If ignition timing is okay, system is okay at this time. If ignition timing is not okay, perform BASIC INSPECTION. See ON-VEHICLE ADJUSTMENTS article.
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