Sfi System Acis Control Circuit

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 VACUUM SWITCHING VALVE FOR ACIS)

CHECK VACUUM HOSES (VACUUM SWITCHING VALVE (FOR ACIS) - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD)

INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE)

INSPECT VACUUM SWITCHING VALVE ASSEMBLY (FOR ACIS)

CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACIS) - ECM AND NO. 1 INTEGRATION RELAY)

SFI SYSTEM - ACIS Control Circuit


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.Sfi System Acis Control Circuit


WIRING DIAGRAM

Refer to DTC P0660 (Click here).

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING GTS (OPERATE VACUUM SWITCHING VALVE FOR ACIS)
Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System.Sfi System Acis Control Circuit

  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 vacuum switching valve for ACIS.

  1. Check the vacuum switching valve air flow when switching the vacuum switching valve.

    OK:
    Test Condition
    		Specified Condition
    Vacuum switching valve is ON
    		Air from port E flows out through port F
    Vacuum switching valve 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 4
OK


2.CHECK VACUUM HOSES (VACUUM SWITCHING VALVE (FOR ACIS) - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD)


NG
REPAIR OR REPLACE VACUUM HOSES
OK


3.INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE)

  1. Inspect the intake air control valve (Click here).



NG
REPLACE INTAKE MANIFOLD (Click here)
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

4.INSPECT VACUUM SWITCHING VALVE ASSEMBLY (FOR ACIS)

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



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


5.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE (FOR ACIS) - ECM AND NO. 1 INTEGRATION RELAY)

  1. Disconnect the vacuum switching valve (for ACIS) connector.

  1. Disconnect the ECM connector.

  1. Remove the No. 1 integration relay from the engine room relay block.

  1. Disconnect the No. 1 integration relay 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
    C129-1 - 1B-4
    		Always
    		Below 1 Ω
    C129-2 or C46-62 (ACIS) - Body ground
    		Always
    		10 kΩ or higher
    C129-1 or 1B-4 - Body ground
    		Always
    		10 kΩ or higher

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C129-2 - C45-62 (ACIS)
    		Always
    		Below 1 Ω
    C129-1 - 1B-4
    		Always
    		Below 1 Ω
    C129-2 or C45-62 (ACIS) - Body ground
    		Always
    		10 kΩ or higher
    C129-1 or 1B-4 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)