Sfi System - Fuel Injector Circuit

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1GR-FE ENGINE CONTROL

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE)

INSPECT FUEL INJECTOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

SFI SYSTEM - Fuel Injector Circuit

DESCRIPTION

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


WIRING DIAGRAM

Sfi System - Fuel Injector Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

  • NOTICE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE)
Sfi System - Fuel Injector Circuit. 1GR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the fuel injector assembly connector.

Turn the ignition switch to ON.

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

  • Standard Voltage:
  • CylinderTester ConnectionSwitch ConditionSpecified Condition
    No. 1C5-1 - Body groundIgnition switch ON11 to 14 V
    No. 2C16-1 - Body groundIgnition switch ON11 to 14 V
    No. 3C7-1 - Body groundIgnition switch ON11 to 14 V
    No. 4C14-1 - Body groundIgnition switch ON11 to 14 V
    No. 5C9-1 - Body groundIgnition switch ON11 to 14 V
    No. 6C12-1 - Body groundIgnition switch ON11 to 14 V
Text in Illustration
*aFront view of wire harness connector
(to Fuel Injector Assembly)

Turn the ignition switch off.

NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IG2) - FUEL INJECTOR ASSEMBLY)
OK
2.INSPECT FUEL INJECTOR ASSEMBLY

Inspect the fuel injector assembly ().

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

Disconnect the fuel injector assembly connector.

Disconnect the ECM connector.

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

  • Standard Resistance:
  • for LHD
    CylinderTester ConnectionConditionSpecified Condition
    No. 1C5-2 - Body groundAlways10 kΩ or higher
    C5-2 - C45-86 (#10)AlwaysBelow 1 Ω
    No. 2C16-2 - Body groundAlways10 kΩ or higher
    C16-2 - C45-109 (#20)AlwaysBelow 1 Ω
    No. 3C7-2 - Body groundAlways10 kΩ or higher
    C7-2 - C45-85 (#30)AlwaysBelow 1 Ω
    No. 4C14-2 - Body groundAlways10 kΩ or higher
    C14-2 - C45-108 (#40) AlwaysBelow 1 Ω
    No. 5C9-2 - Body groundAlways10 kΩ or higher
    C9-2 - C45-84 (#50)AlwaysBelow 1 Ω
    No. 6C12-2 - Body groundAlways10 kΩ or higher
    C12-2 - C45-107 (#60)AlwaysBelow 1 Ω
  • for RHD
    CylinderTester ConnectionConditionSpecified Condition
    No. 1C5-2 - Body groundAlways10 kΩ or higher
    C5-2 - C46-86 (#10)AlwaysBelow 1 Ω
    No. 2C16-2 - Body groundAlways10 kΩ or higher
    C16-2 - C46-109 (#20)AlwaysBelow 1 Ω
    No. 3C7-2 - Body groundAlways10 kΩ or higher
    C7-2 - C46-85 (#30)AlwaysBelow 1 Ω
    No. 4C14-2 - Body groundAlways10 kΩ or higher
    C14-2 - C46-108 (#40) AlwaysBelow 1 Ω
    No. 5C9-2 - Body groundAlways10 kΩ or higher
    C9-2 - C46-84 (#50)AlwaysBelow 1 Ω
    No. 6C12-2 - Body groundAlways10 kΩ or higher
    C12-2 - C46-107 (#60)AlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM ()