Sfi System (W/ Secondary Air Injection System) Fuel Injector Circuit

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
2Tr-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 - ECM)

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - IGNITION SWITCH)

INSPECT IGNITION SWITCH ASSEMBLY

SFI SYSTEM (w/ Secondary Air Injection System) - Fuel Injector Circuit


DESCRIPTION

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

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection 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 Ggn25.2Tr-Fe Engine Control.Sfi System (W/ Secondary Air Injection System).Sfi System (W/ Secondary Air Injection System) Fuel Injector Circuit

  1. Disconnect the fuel injector connector.

  1. Turn the ignition switch to ON.

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

    Standard Voltage:
    Cylinder
    		Tester Connection
    		Switch Condition
    		Specified Condition
    No. 1
    		C65-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    No. 2
    		C2-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    No. 3
    		C66-1 - Body ground
    		Ignition switch ON
    		11 to 14 V
    No. 4
    		C4-1 - 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 4
OK


2.INSPECT FUEL INJECTOR ASSEMBLY

  1. Inspect the fuel injector assembly (HILUX_TGN26 RM000000WQQ076X.html).



NG
REPLACE FUEL INJECTOR ASSEMBLY (HILUX_TGN26 RM000000YLB010X.html)
OK


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

  1. Disconnect the fuel injector connector.

  1. Disconnect the 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
    		C65-2 - Body ground
    		Always
    		10 kΩ or higher
    C65-2 - C76-6 (#10)
    		Always
    		Below 1 Ω
    No. 2
    		C2-2 - Body ground
    		Always
    		10 kΩ or higher
    C2-2 - C76-5 (#20)
    		Always
    		Below 1 Ω
    No. 3
    		C66-2 - Body ground
    		Always
    		10 kΩ or higher
    C66-2 - C76-2 (#30)
    		Always
    		Below 1 Ω
    No. 4
    		C4-2 - Body ground
    		Always
    		10 kΩ or higher
    C4-2 - C76-1 (#40)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM000000VW2023X.html)

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

  1. Disconnect the fuel injector connector.

  1. Disconnect the ignition switch connector.

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

    Standard Resistance:

    Cylinder
    		Tester Connection
    		Condition
    		Specified Condition
    No. 1
    		C65-1 - Body ground
    		Always
    		10 kΩ or higher
    C65-1 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    No. 2
    		C2-1 - Body ground
    		Always
    		10 kΩ or higher
    C2-1 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    No. 3
    		C66-1 - Body ground
    		Always
    		10 kΩ or higher
    C66-1 - G9-6 (IG2)
    		Always
    		Below 1 Ω
    No. 4
    		C4-1 - Body ground
    		Always
    		10 kΩ or higher
    C4-1 - G9-6 (IG2)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT IGNITION SWITCH ASSEMBLY

  1. Inspect the ignition switch assembly (HILUX_TGN26 RM00000135X01BX_01_0001.html).



NG
REPLACE IGNITION SWITCH ASSEMBLY (HILUX_TGN26 RM00000135Z01BX.html)
OK

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