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Home >> Infiniti >> 2011 >> M37 x >> Repair and Diagnosis >> External Pages >> Different car >> Section 298 (Engine Control System - DTCS P1225 Through P2A03) >> DTC P1423, P1424: Cold Start Control >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  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. PERFORM DTC CONFIRMATION PROCEDURE

    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 that "COOLAN TEMP/S".
      • If it is between 5°C (41°F) and 40°C (104°F) go to the following steps.
      • If it is below 5°C (41°F) warm engine up to more than 5°C (41°F) and retry from step  1.
      • If it is above 40°C (104°F) cool engine down to less than 40°C (104°F) and retry from step  1.
    5. Start engine and let it idle for 5 minutes.
    6. 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

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