P0661

2UR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0661,P0662: Intake Manifold Tuning Valve Control Circuit Low
P0662 - Intake Manifold Tuning Valve Control Circuit High

DESCRIPTION

Based on the engine speed and throttle opening angle information from the ECM, the acoustic control induction system controls the intake air control valve actuator. In order to change the effective length of the intake manifold, the air control valve actuator opens and closes the intake manifold's ACIS valve via the link. As a result, the low-to-medium speed range torque and high rpm range performance are improved.









WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Read freeze frame data using the Techstream. Freeze frame data records the engine condition 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. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG) and turn the Techstream ON.

(c) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.

(d) Check the operation of the intake air control valve actuator using the Techstream.

- Check acoustic control induction system (ACIS)

* Perform the Active Test, and check that the actuator link moves.

OK:

Actuator link moves to left and right

- Check intake air control valve actuator

* Disconnect the actuator link.

* Perform the Active Test, and check that the actuator shaft moves.

OK:

Actuator shaft moves to left and right

Result





C -- REPLACE INTAKE MANIFOLD Removal

B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.

2. INSPECT INTAKE AIR CONTROL VALVE ACTUATOR





(a) Disconnect the E46 intake air control valve actuator circuit.

(b) When battery voltage is alternately applied to terminal 1 and 2 of the intake air control valve actuator, check that the actuator shaft moves.

OK:

Actuator shaft moves to left and right

NG -- REPLACE INTAKE AIR CONTROL VALVE ACTUATOR Removal
OK -- Continue to next step.

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

(a) Disconnect the E46 intake air control valve actuator connector.





(b) Disconnect the E4 ECM connector.

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

Standard resistance (Check for open):





Standard resistance (Check for short):





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Removal