Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 3UR-FE ENGINE CONTROL

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 ().


INSPECTION PROCEDURE

  • NOTICE:
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK INJECTOR ASSEMBLY (POWER SOURCE)
Sfi System - Fuel Injector Circuit. 3UR-FE ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the fuel injector connector.

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

  • Standard Voltage:
  • CylinderTester ConnectionSwitch ConditionSpecified Condition
    No. 1a5-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 2a1-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 3a6-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 4a2-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 5a7-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 6a3-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 7a8-2 - Body groundEngine switch on (IG)11 to 14 V
    No. 8a4-2 - Body groundEngine switch on (IG)11 to 14 V
NG
Go to step 4
OK
2.INSPECT FUEL INJECTOR ASSEMBLY

Inspect the fuel injector ().

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

Disconnect the fuel injector connector.

Disconnect the C45 ECM connector.

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

  • Standard Resistance:
  • CylinderTester ConnectionConditionSpecified Condition
    No. 1a5-1 - Body groundAlways10 kΩ or higher
    a5-1 - C45-86 (#10)AlwaysBelow 1 Ω
    No. 2a1-1 - Body groundAlways10 kΩ or higher
    a1-1 - C45-109 (#20)AlwaysBelow 1 Ω
    No. 3a6-1 - Body groundAlways10 kΩ or higher
    a6-1 - C45-85 (#30)AlwaysBelow 1 Ω
    No. 4a2-1 - Body groundAlways10 kΩ or higher
    a2-1 - C45-108 (#40)AlwaysBelow 1 Ω
    No. 5a7-1 - Body groundAlways10 kΩ or higher
    a7-1 - C45-84 (#50)AlwaysBelow 1 Ω
    No. 6a3-1 - Body groundAlways10 kΩ or higher
    a3-1 - C45-107 (#60)AlwaysBelow 1 Ω
    No. 7a8-1 - Body groundAlways10 kΩ or higher
    a8-1 - C45-83 (#70)AlwaysBelow 1 Ω
    No. 8a4-1 - Body groundAlways10 kΩ or higher
    a4-1 - C45-106 (#80)AlwaysBelow 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM ()
4.INSPECT INTEGRATION RELAY (IG2)

Inspect the integration relay (IG2) ().

NG
REPLACE INTEGRATION RELAY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY)
3UR-FE ENGINE CONTROL
Land Cruiser URJ200 URJ202 GRJ200 VDJ200
SFI SYSTEM