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Home >> Infiniti >> 2009 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 To P0308 >> DTC P0116: ECT Sensor >> DTC Confirmation Procedure
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DTC Confirmation Procedure

NOTE:
  • If DTC P0116 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117, P0118.  Refer to "DTC CONFIRMATION PROCEDURE ".
  • If DTC confirmation procedure has been previously conducted, always perform the following before conducting the next step.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION: 

Before performing the following procedure, do not fill with the fuel. 

  1. Start engine and warm it up to normal operating temperature.
  2. Rev engine up to 2, 000 RPM for more than 10 minutes.
  3. Move the vehicle to a cool place, then stop engine and turn ignition switch OFF.
  4. Check resistance between "fuel level sensor and fuel pump" terminals 3 and 4.
  5. Soak the vehicle until the resistance between "fuel level sensor and fuel pump" terminals 3 and 4 becomes 0.5 kΩ higher than the value measured before soaking.
    CAUTION: Never turn ignition switch ON during the soaking time.
    NOTE: Soak time changes depending on ambient air temperature. It may take several hours.
  6. Start engine and let it idle for 5 minutes.
  7. Check 1st trip DTC.
  8. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".
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