P2006

2AR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2004,P2006: Intake Manifold Runner Control Stuck Open (Bank 1)


DESCRIPTION

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

When the TCV 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.





HINT
After confirming DTCs P2004 and/or P2006, use the Techstream to confirm the Intake Air Control Position while performing Control the IAC Duty Ratio of the Active Test.

Reference (Normal condition):





Reference (Normal condition):





MONITOR DESCRIPTION

When the ECM has requested a TCV close operation but the actual TCV opening angle is 17° or more for 10 seconds, DTC P2004 is output. When the ECM has requested a TCV open operation but the actual TCV opening angle is less than 35° for 10 seconds, DTC P2006 is output.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All:





P2004:





P2006:





TYPICAL MALFUNCTION THRESHOLDS

P2004:





P2006:





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the ignition switch to ON [A].

3. Turn the Techstream on.

4. Clear the DTCs.

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

HINT
- Check DTC P2004 at a coolant temperature of 30°C or less.
- Check DTC P2006 at a coolant temperature of 80°C or higher.

6. Turn the ignition switch off.

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

8. Enter the following menus: Powertrain / Engine and ECT / Utility / All readiness.

9. Input the DTC: P2004 or P2006.

10. Check the DTC judgment result [C].





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

11. If the test result is UNKNOWN, enter the following menus: Powertrain / Engine and ECT / Trouble Code / Pending.

12. Read Pending DTCs.

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

13. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

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 the Techstream. 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)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

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

(e) Read DTCs.

Result





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

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

2. INSPECT INTAKE MANIFOLD (DC MOTOR FOR TCV OPERATION)

(a) Inspect the intake manifold Intake System.

NG -- REPLACE INTAKE MANIFOLD Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (ECM - DC MOTOR FOR TCV)





(a) Disconnect the ECM connector.

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

(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 connector.

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

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

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear DTCs.

(e) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(f) Read DTCs.

Result





B -- SYSTEM OK

A -- REPLACE ECM Removal