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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (3 Of 4) >> DTC/Circuit Diagnosis >> P2101 Electric Throttle Control Function >> DTC Description
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DTC Description

DTC DETECTION LOGIC 

DTC CONSULT screen terms(Trouble diagnosis content) DTC detection condition
P2101 00 ETC FNCTN/CIRC-B1(Throttle actuator "A" control motor circuit range/performance) Diagnosis condition Engine running at idle
Signal (terminal) -
Threshold Electric throttle control function does not operate properly
Diagnosis delay time -

POSSIBLE CAUSE 

FAIL-SAFE 

Engine operating condition in fail-safe mode
Fail safe mode Vehicle behavior
Device fix mode
  • This mode fixes the EVT control solenoid valve in the reference position.
  • The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).
Others ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.

DTC CONFIRMATION PROCEDURE 

  1. CHECK DTC PRIORITY 

    If DTC P2101 is displayed with DTC P2100 or P2119, first perform the trouble diagnosis for DTC P2100 or P2119.

    Is applicable DTC detected?

    >>

    Perform diagnosis of applicable.

    >>

    GO TO 2.

  2. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    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 more than 11 V at idle.

    >>

    GO TO 3.

  3. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 2 seconds.
    2. Start engine and let it idle for 5 seconds.
    3. Check DTC.

    Is DTC detected?

    >>

    Proceed to Diagnosis Procedure .

    >>

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

    >>

    Confirmation after repair: INSPECTION END