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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0217: Coolant OVERTEMPERATURE Enrichment Protection >> DTC Confirmation Test
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DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Xterra and 2002 Nissan Frontier. 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. 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. 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 or radiator air passage. 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 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, adjust ignition timing and recheck.
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