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Home >> Infiniti >> 2024 >> Q50 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 7) >> Engine (ECM) >> P052D Intake Valve Timing Control >> Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING 

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

    SYMBOL With CONSULT

    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.
    4. Turn ignition switch ON.
    5. On the CONSULT screen, select "ENGINE" >> "DATA MONITOR" >> "COOLANT TEMP/S".
    6. Check "COOLANT TEMP/S" indication value.

    SYMBOL With GST Follow the procedure "With CONSULT " above. Is the value of "COOLANT TEMP/S"-5°C (23°F) and 45°C (113°F)?

    YES>>

    GO TO 2.

    NO-1 [if it is below -5°C (23°F)]>>

    Warm up the engine until the value of "COOLANT TEMP/S" indicates -5°C (23°F) and 45°C (113°F). And then GO TO 2.

    NO-2 [if it is above 45°C (113°F)]>>

    Cool the engine down to the value of "COOLANT TEMP/S" indicates -5°C (23°F) and 45°C (113°F). And then GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch OFF and wait at 10 seconds.
    2. Turn ignition switch ON.
    3. Set the selector lever in N range.
    4. Start the engine and let it idle for 20 seconds or more.
    5. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES>>

    Refer to DTC Diagnosis Procedure .

    NO>>

    INSPECTION END