SFI SYSTEM, Diagnostic DTC:P0660

DTC Code DTC Name
P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)

DESCRIPTION

This circuit opens and closes the intake air control valve assembly in response to changes in the engine load in order to increase the intake efficiency using the acoustic control induction system.

When the engine speed is between 0 and 4450 rpm and the throttle valve opening angle is 60°C or more, the ECM supplies current to the actuator (on status), to close the intake air control valve assembly. Under other conditions, the VSV is usually off and the intake air control valve is open.

A01CD0BE14
DTC No. DTC Detection Condition Trouble Area
P0660

The following conditions are met simultaneously for 0.5 seconds or more (2 trip detection logic):


  1. Voltage of terminal acoustic control induction system of the ECM is low when the actuator is off

  2. The engine has been started

  • Open or short in intake air control valve circuit

  • Intake air surge tank assembly (intake air control valve assembly)

  • ECM

WIRING DIAGRAM

A01CAQJE02

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG) and turn the intelligent tester on.

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

    4. Check if operating noise can be heard when operating the intake control valve using the intelligent tester.

      OK
      Operating noise can be heard.

    NG

    CHECK INTAKE AIR SURGE TANK ASSEMBLY (INTAKE AIR CONTROL VALVE ASSEMBLY OPERATION) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

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


    1. A01CF12E05

      Disconnect the intake air control valve assembly connector.

    2. Apply battery voltage between the terminals of the intake air control valve assembly connector.

    3. Check the intake air control valve assembly operation.

      OK
      Operating noise can be heard.

    4. Reconnect the intake air control valve assembly connector.


    NG

    REPLACE INTAKE AIR SURGE TANK ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY VOLTAGE)


    1. A01CFG6E01

      Disconnect the intake air control valve assembly connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D37-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V

    4. Reconnect the intake air control valve assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI MAIN RELAY - INTAKE AIR CONTROL VALVE ASSEMBLY)

    OK

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


    1. Disconnect the intake air control valve assembly connector.

      A01CBEUE03

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      D37-1 (ACIS) - D1-107 (ACIS) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D37-1 (ACIS) or D1-107 (ACIS) - D1-1 (E1) Always 10 kΩ or higher

    4. Reconnect the intake air control valve assembly connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM)

    OK

    REPLACE ECM Click here