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Home >> Infiniti >> 2019 >> Q60 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (5 Of 13) >> DTC/Circuit Diagnosis >> DTC P0234: TC System >> DTC Description >> DTC Confirmation Procedure
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DTC Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC P0234 is displayed with DTC P0237 or P0238, first perform the trouble diagnosis for DTC P0237 or P0238.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Description .

    NO

    GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK 
    NOTE: Use component function check to check the overall function of turbocharger system circuit.
    1. Turn ignition switch ON and engine stopped.
    2. On the CONSULT screen, select "ENGINE">>"ACTIVE TEST">>"WASTEGATE ACTUATOR".
    3. Operate "Up" or "Down", set "W/G ACTUATOR POSITION B1" to 0.002 m, and make a quick short note of value "V1" of "W/G ACTUATOR POSI SEN B1".
    4. Operate "Up" or "Down", set "W/G ACTUATOR POSITION B1" to 0.006 m, and make a quick short note of value "V2" of "W/G ACTUATOR POSI SEN B1".

    Do the values of "V1" and "V2" change (visually, ACTUATOR SHAFT operates) and "V2" minus "V1" becomes equal to or more than 1.3 V?

    YES

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    YES

    Confirmation after repair: INSPECTION END

    NO

    Proceed to Diagnosis Procedure .

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