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Home >> Infiniti >> 2011 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 Through P1220 >> DTC P050E: Cold Start Control >> DTC Logic >> DTC Confirmation Procedure

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.

      TESTING CONDITION: 

      Before performing the following procedure, confirm that battery voltage is 11 V or more at idle. 

      GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE-I

    WITH CONSULT-III

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Select "DATA MONITOR" mode with CONSULT-III.
    4. Check the indication of "COOLAN TEMP/S".

      WITH GST

      Follow the procedure "With CONSULT-III" above.

      Is the value of "COOLAN TEMP/S" between 5°C (41°F) and 36°C (97°F)? 

      YES: GO TO 3.

      NO-1 [If it is below 5°C (41°F)]: Warm up the engine until the value of "COOLAN TEMP/S" reaches 5°C (41°F) or more. Retry from step  1.

      NO-2 [If it is above 36°C (97°F)]: Cool engine down to less than 36°C (97°F). Retry from step  1.

  3. PERFORM DTC CONFIRMATION PROCEDURE-II

    WITH CONSULT-III

    1. Set the select lever in N range.
    2. Start the engine and warm up in idle with the value of "COOLAN TEMP/S" between 5°C (41°F) and 40°C (104°F) for more than 15 seconds.
    3. Check 1st trip DTC.

      WITH GST

      Follow the procedure "With CONSULT-III" above.

      Is 1st trip DTC detected? 

      YES: Proceed to "DIAGNOSIS PROCEDURE ".

      NO: INSPECTION END