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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 To P0153 >> DTC P0125: ECT Sensor >> DTC Logic >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. PRECONDITIONING
    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.

    : GO TO 2.

  2. CHECK ENGINE COOLANT TEMPERATURE SENSOR FUNCTION

    WITH CONSULT

    1. Turn ignition switch ON.
    2. Select "DATA MONITOR" mode with CONSULT.
    3. Check that "COOLAN TEMP/S" is above 10°C (50°F).

    WITH GST

    Follow the procedure "With CONSULT" above.

    Is the temperature above 10°C (50°F)? 

    YES: INSPECTION END

    NO: GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE

    WITH CONSULT

    1. Start engine and run it for 65 minutes at idle speed.

      If "COOLAN TEMP/S" increases to more than 10°C (50°F) within 65 minutes, stop engine because the test result will be OK. 

      CAUTION: Never overheat engine.
    2. Check 1st trip DTC.

    WITH GST

    Follow the procedure "With CONSULT" above.

    Is 1st trip DTC detected? 

    YES: "DIAGNOSIS PROCEDURE "

    NO: INSPECTION END