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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 204 (Engine Controls - Self-Diagnostics - 1.8L - Ca) >> Diagnostic Tests >> DTC P0217: Coolant OVERTEMPERATURE Enrichment Protection, Or DTC P1217: Engine Overheat >> DTC Confirmation Test (Overall Function Check - DTC P0217)

DTC Confirmation Test (Overall Function Check - DTC P0217)

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Ensure vehicle does not overheat during confirmation test procedure.

Malfunction is detected when engine coolant temperature is excessively high under light engine load conditions. Possible causes are:

  1. Allow engine to cool. Check coolant level in reservoir tank and radiator. If coolant level is low, perform DIAGNOSTIC PROCEDURE  . If coolant level is okay, go to next step.
  2. Check coolant mixture ratio. If coolant mixture ratio is not 45-55 percent, change coolant and go to step  4 . If coolant mixture ratio is 45-55 percent, go to next step.
  3. Ask customer if they have filled cooling system. If cooling system has been filled, perform DIAGNOSTIC PROCEDURE  . If cooling system has not been filled, go to next step.
  4. Start engine. Ensure A/C is turned off and compressor is not operating. If compressor is operating, repair A/C system. See MANUAL or AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING. If compressor 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, perform DIAGNOSTIC PROCEDURE  .
  6. Start engine and warm to normal operating temperature. Ensure coolant is flowing through radiator. Check for blocked radiator or condenser fins. Check for damaged grille or improper air dam installation. If problem exists, repair as necessary and retest system. If problem does not exist, go to next step.
  7. Check operation of ECT sensor. See step  6 under DIAGNOSTIC PROCEDURE. If ECT sensor is not okay, repair as necessary and retest system. If ECT sensor is okay, check ignition timing. See ON-VEHICLE ADJUSTMENTS article. Adjust, if necessary.
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