P0662

1UR-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 speed range performance are improved.









WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Read freeze frame data using the 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.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

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

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

Check the 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 the 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 Components

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

2. INSPECT INTAKE AIR CONTROL VALVE ACTUATOR

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





(b) When battery voltage is alternately applied to terminals 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 Components
OK -- Continue to next step.

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

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

(b) Disconnect the 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):





(d) Reconnect the intake air control valve actuator connector and ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Components