Sfi System Fuel Injector Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
3Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK INJECTOR ASSEMBLY (POWER SOURCE)

INSPECT FUEL INJECTOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

INSPECT INTEGRATION RELAY (IG2)

SFI SYSTEM - Fuel Injector Circuit


DESCRIPTION

The fuel injectors are located on the intake manifold. They inject fuel into the cylinders based on the signals from the ECM.

WIRING DIAGRAM

Refer to DTC P0300 (Click here).

INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK INJECTOR ASSEMBLY (POWER SOURCE)
Land Cruiser. Urj200, 202 Grj200 Vdj200.3Ur-Fe Engine Control.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the fuel injector connector.

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

    Standard Voltage:
    Cylinder
    		Tester Connection
    		Switch Condition
    		Specified Condition
    No. 1
    		a5-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 2
    		a1-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 3
    		a6-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 4
    		a2-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 5
    		a7-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 6
    		a3-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 7
    		a8-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    No. 8
    		a4-2 - Body ground
    		Engine switch on (IG)
    		11 to 14 V


NG
Go to step 4
OK


2.INSPECT FUEL INJECTOR ASSEMBLY

  1. Inspect the fuel injector (Click here).



NG
REPLACE FUEL INJECTOR ASSEMBLY (Click here)
OK


3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

  1. Disconnect the fuel injector connector.

  1. Disconnect the C45 ECM connector.

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

    Standard Resistance:

    Cylinder
    		Tester Connection
    		Condition
    		Specified Condition
    No. 1
    		a5-1 - Body ground
    		Always
    		10 kΩ or higher
    a5-1 - C45-86 (#10)
    		Always
    		Below 1 Ω
    No. 2
    		a1-1 - Body ground
    		Always
    		10 kΩ or higher
    a1-1 - C45-109 (#20)
    		Always
    		Below 1 Ω
    No. 3
    		a6-1 - Body ground
    		Always
    		10 kΩ or higher
    a6-1 - C45-85 (#30)
    		Always
    		Below 1 Ω
    No. 4
    		a2-1 - Body ground
    		Always
    		10 kΩ or higher
    a2-1 - C45-108 (#40)
    		Always
    		Below 1 Ω
    No. 5
    		a7-1 - Body ground
    		Always
    		10 kΩ or higher
    a7-1 - C45-84 (#50)
    		Always
    		Below 1 Ω
    No. 6
    		a3-1 - Body ground
    		Always
    		10 kΩ or higher
    a3-1 - C45-107 (#60)
    		Always
    		Below 1 Ω
    No. 7
    		a8-1 - Body ground
    		Always
    		10 kΩ or higher
    a8-1 - C45-83 (#70)
    		Always
    		Below 1 Ω
    No. 8
    		a4-1 - Body ground
    		Always
    		10 kΩ or higher
    a4-1 - C45-106 (#80)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)

4.INSPECT INTEGRATION RELAY (IG2)

  1. Inspect the integration relay (IG2) (Click here).



NG
REPLACE INTEGRATION RELAY
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY)