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DTC Logic

DTC DETECTION LOGIC

DTC DETECTING CONDITION AND POSSIBLE CAUSES

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2004 Tumble control valve stuck The target angle of tumble control valve controlled by ECM and the input signal from tumble control valve position sensor is not in the normal range.
  • Harness or connectors

    (Tumble control valve motor circuit is open or shorted.)

    (Tumble control valve position sensor circuit is open or shorted.)

    (Accelerator pedal position sensor 2 circuit is shorted.)

    [Crankshaft position sensor (POS) circuit is shorted.]

    (EVAP control system pressure sensor circuit is shorted.)

    (Refrigerant pressure sensor circuit is shorted.)

  • Tumble control valve actuator

    (Tumble control valve motor)

    (Tumble control valve position sensor)

  • Accelerator pedal position sensor

    (APP sensor 2)

  • Crankshaft position sensor (POS)
  • EVAP control system pressure sensor
  • Refrigerant pressure sensor

DTC CONFIRMATION PROCEDURE

  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always perform the following 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  .
    • Always perform the test at a temperature above 0°C (32°F) 

    Go to 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE

    With CONSULT-III 

    1. Turn ignition switch ON.
    2. Select "DATA MONITOR" mode with CONSULT-III.
    3. Check that "COOLAN TEMP/S" indicates between 5°C (41°F) to 56°C (133°F). If not, cool engine down or warm engine up until "COOLAN TEMP/S" indicates between 5°C (41°F) to 56°C (133°F). Then go to the following steps.
    4. Fully release accelerator pedal and wait at least 5 seconds.
    5. Depress accelerator pedal and wait at least 5 seconds.
    6. Check 1st trip DTC.

    With GST 

    Following the procedure "With CONSULT-III" above.

    Is 1st trip DTC detected? 

    YES: Go to "DIAGNOSIS PROCEDURE ".

    NO: INSPECTION END

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