P2004

4GR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2004, P2006: Intake Manifold Runner Control Stuck Open (Bank 1)
P2006 - Intake Manifold Runner Control Stuck Closed (Bank 1)

DESCRIPTION

The Swirl Control Valves (SCV) are built into the intake air surge tank assembly. The swirl control valves use a position sensor and a DC motor. A swirl control valve is located at one side of each pair of independent intake ports. Depending on signals from the ECM, the DC motor opens and closes the swirl control valves. The position sensor detects the opening angle of the swirl control valves. When the swirl control valves close, the velocity of the intake air flow that passes through the port on the other side of the independent intake port will become faster, enhancing lateral turbulent flow in the combustion chamber. As a result, when engine coolant temperature is low, atomization of fuel will be enhanced, stabilizing combustion in the cylinder. Also fuel consumption is decreased due to increased combustion efficiency when the engine is running at a low speed with a light load.





HINT
After confirming DTC P2004 or P2006, use Techstream to confirm the IAC Sensor Voltage (SCV position sensor output voltage) while performing Control the SCV Duty Ratio of the Active Test.

Reference (Normal condition):





MONITOR DESCRIPTION

When the ECM has requested a swirl control valve close operation but the swirl control valve's actual opening angle is 20° or more for 10 seconds, DTC P2004 is output. When the ECM has requested a swirl control valve open operation but the swirl control valve's actual opening angle is less than 35° for 10 seconds, DTC P2006 is output.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

P2004: Intake manifold runner control stuck open





P2006: Intake manifold runner control stuck closed





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the engine switch on (IG).

3. Turn the Techstream on.

4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.

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

6. Turn the engine switch on (IG) and turn the Techstream on [A].

7. Enter the following menus: Powertrain / Engine / Data List / All Data / Coolant Temp.

HINT
- Check DTC P2004 at a coolant temperature of 30°C (86°F) or less.
- Check DTC P2006 at a coolant temperature of 80°C (176°F) or higher.

8. Turn the engine switch off.

9. Turn the engine switch on (IG), wait approximately 10 seconds, and then turn the engine switch off. Repeat this procedure 3 times [B].

10. Enter the following menus: Powertrain / Engine / Trouble Codes.

11. Read the pending DTC [C].

HINT
- 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 / Utility / All Readiness.

13. Input the DTC: P2004 or P2006.

14. Check the DTC judgment result.





HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.

15. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Read freeze frame data using Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction Freeze Frame Data.

PROCEDURE

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

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Result:





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

B -- GO TO DTC CHART SFI System
A -- Continue to next step.

2. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (SWIRL CONTROL VALVE OPERATION)

(a) Inspect the intake air surge tank assembly Intake System.

NG -- REPLACE INTAKE AIR SURGE TANK ASSEMBLY Removal
OK -- Continue to next step.

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

(a) Disconnect the E6 ECM connector.

(b) Disconnect the E53 intake air control valve actuator.

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

Standard resistance (Check for open):





Standard resistance (Check for short):





(d) Reconnect the ECM connector.

(e) Reconnect the intake air control valve actuator.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

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

(a) Connect Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(e) Turn the engine switch off and wait for at least 30 seconds.

(f) Turn the engine switch on (IG).

(g) Turn the Techstream on.

(h) Drive the vehicle accordance with the driving pattern described in the Confirmation Driving Pattern.

(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(j) Read the pending DTCs.

Result:





B -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems

A -- REPLACE ECM Removal