Sfi System Fuel Injector Circuit

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Gr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE)

INSPECT FUEL INJECTOR ASSEMBLY

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IGNITION SWITCH ASSEMBLY)

INSPECT IGNITION SWITCH ASSEMBLY

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


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Gr-Fe Engine Control.Sfi System.Sfi System Fuel Injector Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE)


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Gr-Fe Engine Control.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the fuel injector assembly connectors.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C136-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C142-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C135-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C141-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C134-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    C140-2 - Body ground
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Fuel Injector Assembly)


NG
Go to step 5
OK


2.INSPECT FUEL INJECTOR ASSEMBLY

  1. Inspect the fuel injector assembly (HILUX_TGN26 RM0000015R300CX.html).



NG
REPLACE FUEL INJECTOR ASSEMBLY (HILUX_TGN26 RM0000014ER00BX.html)
OK


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

  1. Disconnect the ECM connector.

  1. Disconnect the fuel injector assembly connectors.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C136-1 - C131-2 (#10)
    		Always
    		Below 1 Ω
    C142-1 - C131-3 (#20)
    		Always
    		Below 1 Ω
    C135-1 - C131-4 (#30)
    		Always
    		Below 1 Ω
    C141-1 - C131-5 (#40)
    		Always
    		Below 1 Ω
    C134-1 - C131-6 (#50)
    		Always
    		Below 1 Ω
    C140-1 - C131-7 (#60)
    		Always
    		Below 1 Ω
    C136-1 or C131-2 (#10) - Body ground
    		Always
    		10 kΩ or higher
    C142-1 or C131-3 (#20) - Body ground
    		Always
    		10 kΩ or higher
    C135-1 or C131-4 (#30) - Body ground
    		Always
    		10 kΩ or higher
    C141-1 or C131-5 (#40) - Body ground
    		Always
    		10 kΩ or higher
    C134-1 or C131-6 (#50) - Body ground
    		Always
    		10 kΩ or higher
    C140-1 or C131-7 (#60) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C129-7 (E01) - Body ground
    		Always
    		Below 1 Ω
    C129-6 (E02) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM000000VW202KX.html)

5.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IGNITION SWITCH ASSEMBLY)

  1. Disconnect the fuel injector assembly connectors.

  1. Disconnect the ignition switch assembly connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C136-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C142-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C135-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C141-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C134-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C140-2 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    C136-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher
    C142-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher
    C135-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher
    C141-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher
    C134-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher
    C140-2 or G9-6 (IG2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT IGNITION SWITCH ASSEMBLY

  1. Inspect the ignition switch assembly (HILUX_TGN26 RM00000135X01OX.html).



NG
REPLACE IGNITION SWITCH ASSEMBLY (HILUX_TGN26 RM00000135Z01OX.html)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH ASSEMBLY - BATTERY)