Sfi System Fuel Injector Circuit

Engine. Camry. Acv40 Gsv40
2Az-Fe Engine Control System. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT ECM (#10, #20, #30, #40 VOLTAGE)

INSPECT FUEL INJECTOR (RESISTANCE)

CHECK HARNESS AND CONNECTOR

INSPECT IGNITION RELAY NO. 2

CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND)

INSPECT FUSE (INJ FUSE)

INSPECT IGNITION SWITCH

CHECK HARNESS AND CONNECTOR (INJECTOR - ECM)

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

INSPECT FUEL INJECTOR (FUEL INJECTION VOLUME)

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


Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit


INSPECTION PROCEDURE

1.INSPECT ECM (#10, #20, #30, #40 VOLTAGE)


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the C24 ECM connector.

  1. Turn the ignition switch to the ON position.

  1. Measure the voltage between the terminals of the ECM connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    #10 (C24-108) - Body ground
    		9 to 14 V
    #20 (C24-107) - Body ground
    #30 (C24-106) - Body ground
    #40 (C24-105) - Body ground

  1. Reconnect the ECM connector.



OK
Go to step 9
NG


2.INSPECT FUEL INJECTOR (RESISTANCE)

  1. Inspect the fuel injector (CAMRY_ACV40 RM000000YCT003X_01_0001.html).



NG
REPLACE FUEL INJECTOR
OK


3.CHECK HARNESS AND CONNECTOR


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the C7 to C10 injector connectors.

  1. Turn the ignition switch to the ON position.

  1. Measure the voltage.

    Standard voltage:
    Cylinder
    		Tester Connection
    		Specified Condition
    No. 1
    		C7-1 - Body ground
    		11 to 14 V
    No. 2
    		C9-1 - Body ground
    No. 3
    		C8-1 - Body ground
    No. 4
    		C10-1 - Body ground
    Result:
    Result
    		Proceed to
    NG (RHD)
    		A
    NG (LHD)
    		B
    OK
    		C

  1. Reconnect the injector connectors.



B
Go to step 6

C
Go to step 8
A


4.INSPECT IGNITION RELAY NO. 2


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Remove the IG2 relay from the engine room R/B.

  1. Measure the resistance between the terminals.

    Standard resistance:
    Tester Connection
    		Specified Condition
    3 - 5
    		10 kΩ or higher
    Below 1 Ω
    (Apply battery voltage between terminals 1 and 2)

  1. Reinstall the IG2 relay.



NG
REPLACE IGNITION RELAY NO. 2
OK


5.CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND)


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Remove the IG2 relay from the engine room R/B.

  1. Measure the resistance between the terminals.

    Standard resistance:
    Tester Connection
    		Specified Condition
    IG2 relay terminal 2 - Body ground
    		Below 1 Ω

  1. Reinstall the IG2 relay.



OK
Go to step 7
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.INSPECT FUSE (INJ FUSE)


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Remove the INJ fuse from the instrument panel J/B.

  1. Measure the fuse resistance.

    Standard resistance:
    Below 1 Ω

  1. Reinstall the fuse.



NG
REPLACE FUSE (INJ FUSE)
OK


7.INSPECT IGNITION SWITCH


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the E23 ignition switch connector.

  1. Measure the resistance between the terminals.

    Standard resistance:
    Tester Connection
    		Ignition Switch Position
    		Specified Condition
    All Terminals
    		LOCK
    		10 kΩ or higher
    2 - 4
    		ACC
    		Below 1 Ω
    1 - 2 - 4, 5 - 6
    		ON
    1 - 3 - 4, 5 - 6 - 7
    		START

  1. Reconnect the ignition switch connector.



NG
REPLACE IGNITION SWITCH
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - FUEL INJECTOR)

8.CHECK HARNESS AND CONNECTOR (INJECTOR - ECM)


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the C7 to C10 injector connectors.

  1. Disconnect the C24 ECM connector.

  1. Measure the resistance between the injector and the ECM connector terminals.

    Standard resistance:
    Cylinder
    		Tester Connection
    		Specified Condition
    No. 1
    		C7-2 or #10 (C24-108) - Body ground
    		10 kΩ or higher
    C7-2 - #10 (C24-108)
    		Below 1 Ω
    No. 2
    		C9-2 or #20 (C24-107) - Body ground
    		10 kΩ or higher
    C9-2 - #20 (C24-107)
    		Below 1 Ω
    No. 3
    		C8-2 or #30 (C24-106) - Body ground
    		10 kΩ or higher
    C8-2 - #30 (C24-106)
    		Below 1 Ω
    No. 4
    		C10-2 or #40 (C24-105) - Body ground
    		10 kΩ or higher
    C10-2 - #40 (C24-105)
    		Below 1 Ω

  1. Reconnect the injector connectors.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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


    Camry. Acv40 Gsv40.2Az-Fe Engine Control System.Sfi System.Sfi System Fuel Injector Circuit

  1. Disconnect the C24 ECM connector.

  1. Measure the resistance.

    Standard resistance:
    Tester Connection
    		Specified Condition
    E01 (C24-45) - Body ground
    		Below 1 Ω
    E02 (C24-44) - Body ground
    		Below 1 Ω

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


10.INSPECT FUEL INJECTOR (FUEL INJECTION VOLUME)

  1. Inspect the fuel injector (CAMRY_ACV40 RM000000YCT003X_01_0001.html).



NG
REPLACE FUEL INJECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE