SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P2004 and P2006

DTC Code DTC Name
P2004 Intake Manifold Runner Control Stuck Open (Bank 1)
P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)

DESCRIPTION

The Tumble Control Valve (TCV) is built into the intake manifold. The intake air control valve actuator (for tumble control valve) is composed of a position sensor and a DC motor. The DC motor opens and closes the tumble control valve in response to signals from the ECM. The position sensor detects the opening angle of the tumble control valve.

When the tumble control valve is closed, the intake air tumble flow intensifies and negative pressure is generated between the tumble control valve and intake valve which atomizes the fuel. Combustion is enhanced and exhaust gas emissions are reduced at low temperatures.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2004

Intake Manifold Runner Control Stuck Open (Bank 1)

The tumble control valve opening angle is 17 deg. or more after requesting the tumble control valve to fully close (2 trip detection logic).

  • Open or short in intake air control valve actuator (for tumble control valve) circuit

  • Intake air control valve actuator (for tumble control valve)

  • Intake manifold

  • ECM

Comes on

DTC stored

P2006

Intake Manifold Runner Control Stuck Closed (Bank 1)

The tumble control valve opening angle is less than 35 deg. after requesting the tumble control valve to fully open (2 trip detection logic).

  • Open or short in intake air control valve actuator (for tumble control valve) circuit

  • Intake air control valve actuator (for tumble control valve)

  • Intake manifold

  • ECM

Comes on

DTC stored
Tip:

When P2004 and/or P2006 is output, use the GTS to confirm Intake Air Control Position while performing Control the IAC Duty Ratio of the Active Test.

Table 1. Reference (Normal Condition: When Engine Warmed Up)

Control the IAC Duty Ratio Operation

Intake Air Control Position

100%

Approximately 70 deg.

0%

Approximately 70 deg.

-100%

Approximately 2 deg.

MONITOR DESCRIPTION

When the ECM has requested a tumble control valve close operation but the actual tumble control valve opening angle is 17 deg. or more for 10 seconds, DTC P2004 is stored. When the ECM has requested a tumble control valve open operation but the actual tumble control valve opening angle is less than 35 deg. for 10 seconds, DTC P2006 is stored.

MONITOR STRATEGY

Required Sensors/Components (Main)

Tumble control valve

Required Sensors/Components (Related)

Intake air temperature sensor

Engine coolant temperature sensor

Frequency of Operation

Once per driving cycle

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

None

Engine coolant temperature

-10°C (14°F) or higher

Intake air temperature

-10°C (14°F) or higher

Ignition switch

ON

Battery voltage

8 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Table 2. P2004

Control valve angle when commanded closed

17 deg. or more
Table 3. P2006

Control valve angle when commanded open

Less than 35 deg.

CONFIRMATION DRIVING PATTERN

A198851E01

  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the ignition switch off and wait for at least 30 seconds.

  6. Turn the ignition switch to ON and turn the GTS on [A].

  7. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp.

    Tip:

    • Check for DTC P2004 at an engine coolant temperature of 30°C (86°F) or less.

    • Check for DTC P2006 at an engine coolant temperature of 80°C (176°F) or higher.

  8. Turn the ignition switch off.

  9. Turn the ignition switch to ON, wait approximately 10 seconds, and then turn the ignition switch off. Repeat this procedure 3 times [B].

  10. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].

  11. Read the pending DTCs.

    Tip:

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  12. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  13. Input the DTC: P2004 or P2006.

  14. Check the DTC judgment result.

    GTS Display

    Description

    NORMAL

    • DTC judgment completed

    • System normal

    ABNORMAL

    • DTC judgment completed

    • System abnormal

    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

WIRING DIAGRAM

A255379E04

CAUTION / NOTICE / HINT

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2004 OR P2006)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    5. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Result

    Proceed to

    DTC P2004 or P2006 is output

    A

    DTC P2004 or P2006 and other DTCs are output

    B
    Tip:

    If any DTCs other than P2004 or P2006 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART

    Click hereClick here

    A

  2. INSPECT INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE)

    1. Inspect the intake air control valve actuator (for tumble control valve).

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE)

    Click here

    OK

  3. INSPECT INTAKE MANIFOLD (TUMBLE CONTROL VALVE OPERATION)

    1. Inspect the intake manifold for the tumble control valve operation.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE INTAKE MANIFOLD

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ACTUATOR - ECM)

    1. Disconnect the ECM connector.

    2. Disconnect the intake air control valve actuator connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      X2-4 (M-) - B77-21 (IA1-)

      Always

      Below 1 Ω

      X2-5 (M+) - B77-22 (IA1+)

      Always

      Below 1 Ω

      X2-4 (M-) or B77-21 (IA1-) - Body ground

      Always

      10 kΩ or higher

      X2-5 (M+) or B77-22 (IA1+) - body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2004 OR P2006)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off and wait for at least 30 seconds.

    6. Turn the ignition switch to ON.

    7. Turn the GTS on.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    10. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Result

    Proceed to

    DTC P2004 or P2006 is output

    A

    DTC is not output

    B
    A

    REPLACE ECM

    Click here

    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here