Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (OPERATE VSV FOR ACIS)

INSPECT VACUUM SWITCHING VALVE (FOR ACIS)

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE VOLTAGE)

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM)

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


DESCRIPTION

This circuit opens and closes the Intake Air Control Valve (IACV) in response to the engine load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)


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 acoustic control induction system terminal of the ECM is low when the actuator is off.
  2. The engine has been started.
  1. Open or short in intake air control valve circuit
  2. Intake air surge tank assembly (intake air control valve assembly)
  3. ECM

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.
1.PERFORM ACTIVE TEST USING GTS (OPERATE VSV FOR ACIS)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)

  1. Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).

  1. Connect the GTS to the DLC3.

  1. Start the engine.

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

  1. Operate the VSV for ACIS.

  1. Check the VSV air flow when switching the VSV.

    OK:
    Test Condition
    		Specified Condition
    VSV is ON
    		Air from port E flows out through port F
    VSV is OFF
    		Air from port E flows out through air filter
    Text in Illustration
    *a
    		VSV is ON
    *b
    		VSV is OFF
    *c
    		Air


NG
Go to step 2
OK

CHECK FOR INTERMITTENT PROBLEMS (Click here)

2.INSPECT VACUUM SWITCHING VALVE (FOR ACIS)

  1. Inspect the vacuum switching valve (for ACIS) (Click here).



NG
REPLACE VACUUM SWITCHING VALVE (FOR ACIS) (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE VOLTAGE)


    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System. Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)

  1. Disconnect the intake air control valve assembly connector.

  1. Turn the engine switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C129-1 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Intake Air Control Valve Assembly)

  1. Reconnect the intake air control valve assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI MAIN RELAY - VACUUM SWITCHING VALVE)
OK


4.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM)

  1. Disconnect the intake air control valve assembly connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    C129-2 - C46-62 (ACIS)
    		Always
    		Below 1 Ω
    C129-2 or C46-62 (ACIS) - Body ground
    		Always
    		10 kΩ or higher

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C129-2 - C45-62 (ACIS)
    		Always
    		Below 1 Ω
    C129-2 or C45-62 (ACIS) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the intake air control valve assembly connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (VACUUM SWITCHING VALVE - ECM)
OK

REPLACE ECM (Click here)