Sfi System Vc Output Circuit

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
2Gr-Fe Engine Control System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM

CHECK MIL (THROTTLE POSITION SENSOR)

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK MIL (BATTERY CURRENT SENSOR)

CHECK MIL (VVT SENSOR FOR BANK 1 INTAKE SIDE)

CHECK MIL (VVT SENSOR FOR BANK 2 INTAKE SIDE)

CHECK MIL (VVT SENSOR FOR BANK 1 EXHAUST SIDE)

CHECK MIL (VVT SENSOR FOR BANK 2 EXHAUST SIDE)

CHECK WIRE HARNESS

SFI SYSTEM - VC Output Circuit


DESCRIPTION

The ECM constantly generates 5 V power from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.

Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Gr-Fe Engine Control System.Sfi System.Sfi System Vc Output Circuit

When the VC circuit is short-circuited, the microprocessor in the ECM and sensors that are supplied with power through the VC circuit are inactivated because the power is not supplied from the VC circuit. Under this condition, the system does not start up and the MIL does not illuminate even if the system malfunctions.
HINT:
Under normal conditions, the MIL is illuminated for several seconds when the ignition switch is first turned ON. The MIL goes off when the engine is started.

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Gr-Fe Engine Control System.Sfi System.Sfi System Vc Output Circuit


INSPECTION PROCEDURE

1.CHECK MIL

  1. Check that the Malfunction Indicator Lamp (MIL) lights up when turning the ignition switch ON.

    OK:
    MIL lights up.


OK
SYSTEM OK
NG


2.CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and tester on.

  1. Check the communication between the tester and ECM.

    Result:

    Result
    		Proceed to
    Communication is possible
    		A
    Communication is not possible
    		B


A
GO TO MIL CIRCUIT (RAV4_ACA30 RM000000WZ10THX.html)
B


3.CHECK MIL (THROTTLE POSITION SENSOR)

  1. Disconnect the throttle body connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the throttle body connector.



A
REPLACE THROTTLE BODY ASSEMBLY (RAV4_ACA30 RM0000017UC00VX.html)
B


4.CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

  1. Disconnect the accelerator pedal position sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the accelerator pedal position sensor connector.



A
REPLACE ACCELERATOR PEDAL POSITION SENSOR (RAV4_ACA30 RM0000017UK01SX.html)
B


5.CHECK MIL (BATTERY CURRENT SENSOR)

  1. Disconnect the battery current sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the battery current sensor connector.



A
REPLACE BATTERY CURRENT SENSOR
B


6.CHECK MIL (VVT SENSOR FOR BANK 1 INTAKE SIDE)

  1. Disconnect the VVT sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the VVT sensor connector.



A
REPLACE VVT SENSOR (FOR BANK 1 INTAKE SIDE) (RAV4_ACA30 RM000000XGY01TX.html)
B


7.CHECK MIL (VVT SENSOR FOR BANK 2 INTAKE SIDE)

  1. Disconnect the VVT sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the VVT sensor connector.



A
REPLACE VVT SENSOR (FOR BANK 2 INTAKE SIDE) (RAV4_ACA30 RM000000XGY01TX.html)
B


8.CHECK MIL (VVT SENSOR FOR BANK 1 EXHAUST SIDE)

  1. Disconnect the VVT sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the VVT sensor connector.



A
REPLACE VVT SENSOR (FOR BANK 1 EXHAUST SIDE) (RAV4_ACA30 RM000000XGY01TX.html)
B


9.CHECK MIL (VVT SENSOR FOR BANK 2 EXHAUST SIDE)

  1. Disconnect the VVT sensor connector.

  1. Turn the ignition switch to the ON position.

  1. Check the MIL.

    Result:

    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the VVT sensor connector.



A
REPLACE VVT SENSOR (FOR BANK 2 EXHAUST SIDE) (RAV4_ACA30 RM000000XGY01TX.html)
B


10.CHECK WIRE HARNESS

  1. Disconnect the throttle body connector.

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the battery current sensor connector.

  1. Disconnect the VVT sensor for bank 1 intake side connector.

  1. Disconnect the VVT sensor for bank 2 intake side connector.

  1. Disconnect the VVT sensor for bank 1 exhaust side connector.

  1. Disconnect the VVT sensor for bank 2 exhaust side connector.

  1. Disconnect the ECM connectors.

  1. Measure the resistance.

    Standard resistance:

    Tester Connection
    		Specified Condition
    B96-96 (VCTA) - Body ground
    		10 kΩ or higher
    A12-57 (VCPA) - Body ground
    		10 kΩ or higher
    A12-58 (VCP2) - Body ground
    		10 kΩ or higher
    B96-80 (VCIB) - Body ground
    		10 kΩ or higher
    B96-115 (VCV1) - Body ground
    		10 kΩ or higher
    B96-113 (VCV2) - Body ground
    		10 kΩ or higher
    B96-114 (VCE1) - Body ground
    		10 kΩ or higher
    B96-112 (VCE2) - Body ground
    		10 kΩ or higher

  1. Reconnect the throttle body connector.

  1. Reconnect the accelerator pedal position sensor connector.

  1. Reconnect the battery current sensor connector.

  1. Reconnect the VVT sensor connector.

  1. Reconnect the ECM connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (RAV4_ACA30 RM0000017UN01LX.html)