СИСТЕМА SFI > Цепь управления топливным насосом

для подготовки Нажмите здесь


DESCRIPTION

Refer to DTC P0230 (see page Нажмите здесь).

WIRING DIAGRAM

Refer to DTC P0230 (see page Нажмите здесь).

INSPECTION PROCEDURE

1.CHECK FUEL PUMP OPERATION

  1. Check if there is pressure in the fuel inlet hose (see page Нажмите здесь).

    УКАЗАНИЕ:
    If there is fuel pressure, you will hear the sound of fuel flowing.



OK
Перейдите к шагу 10
NG


2.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE C/OPN RELAY)

  1. Connect an intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.

  1. Check whether operating sounds can be heard while operating the relay using the tester.

    OK:
    Operating sounds can be heard from relay.



OK
Перейдите к шагу 5
NG


3.INSPECT C/OPN RELAY
B016200

  1. Remove the C/OPN relay from the engine room No. 2 relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - 5
    		When no battery voltage applied to terminals 1 and 2
    		10 kΩ or higher
    3 - 5
    		When battery voltage applied to terminals 1 and 2
    		Below 1 Ω



NG
REPLACE C/OPN RELAY
OK


4.INSPECT ECM (FC VOLTAGE)
A124678E33

  1. Turn the engine switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A14-5 (FC) - E3-1 (E1)
    		Engine switch on (IG)
    		11 to 14 V



OK
REPLACE ECM (Нажмите здесь)
NG

CHECK AND REPAIR HARNESS AND CONNECTOR (ECM - C/OPN RELAY - EFI-B FUSE) 

5.INSPECT ECM POWER SOURCE CIRCUIT

  1. Inspect the ECM power source circuit (see page Нажмите здесь).



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.INSPECT F/PMP RELAY


    A095468E01

  1. Remove the F/PMP relay from the engine room No. 2 relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - 4
    		When no battery voltage is applied to terminals 1 and 2
    		Below 1 Ω
    3 - 4
    		When battery voltage is applied to terminals 1 and 2
    		10 kΩ or more



NG
REPLACE F/PMP RELAY
OK


7.INSPECT FUEL PUMP ASSEMBLY
A152299E02

  1. Inspect the fuel pump resistance.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      4 - 5
      		20°C (68°F)
      		0.2 to 3.0 Ω

  1. Inspect the fuel pump operation.

    1. Apply battery voltage to both terminals. Check that the pump operates.

      ПРИМЕЧАНИЕ:
      1. These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
      2. Keep the fuel pump as far away from the battery as possible.
      3. Always turn the voltage on and off on the battery side, not the fuel pump side.



NG
REPLACE FUEL PUMP ASSEMBLY (Нажмите здесь)
OK


8.CHECK HARNESS AND CONNECTOR (FUEL PUMP - F/PMP RELAY, FUEL PUMP - BODY GROUND)
A152300E01

  1. Check the harness and connector between the fuel pump and F/PMP relay.

    1. Disconnect the S11 fuel pump connector.

    2. Remove the F/PMP relay from the engine room No. 2 relay block.

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

      Standard Resistance (Check for open):
      Tester Connection
      		Condition
      		Specified Condition
      S11-4 - F/PMP relay (3)
      		Always
      		Below 1 Ω

      Standard Resistance (Check for short):
      Tester Connection
      		Condition
      		Specified Condition
      S11-4 or F/PMP relay (3) - Body ground
      		Always
      		10 kΩ or higher

  1. Check the harness and connector between the fuel pump and body ground.

    1. Disconnect the S11 fuel pump connector.

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

      Standard Resistance (Check for open):
      Tester Connection
      		Condition
      		Specified Condition
      S11-5 - Body ground
      		Always
      		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK HARNESS AND CONNECTOR (C/OPN RELAY - F/PMP RELAY)
A152301E01

  1. Remove the C/OPN relay and F/PMP relay from the engine room No. 2 relay block.

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

    Standard Resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    C/OPN relay (3) - F/PMP relay (4)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    C/OPN relay (3) or F/PMP relay (4) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE ENGINE ROOM NO. 2 RELAY BLOCK
OK

CHECK AND REPAIR HARNESS AND CONNECTOR (EFI MAIN1 RELAY - C/OPN RELAY) 

10.INSPECT F/PMP RELAY


    A095468E01

  1. Remove the F/PMP relay from the engine room No. 2 relay block.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3 - 4
    		When no battery voltage is applied to terminals 1 and 2
    		Below 1 Ω
    3 - 4
    		When battery voltage is applied to terminals 1 and 2
    		10 kΩ or more



NG
REPLACE F/PMP RELAY
OK


11.INSPECT FUEL PUMP RESISTOR (RESISTANCE)
A148914E01

  1. Inspect the fuel pump resistor resistance.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		0.941 to 0.999 Ω



NG
REPLACE FUEL PUMP RESISTOR (Нажмите здесь)
OK


12.CHECK HARNESS AND CONNECTOR (F/PMP RELAY - FUEL PUMP RESISTOR - FUEL PUMP)
A152306E01

  1. Check the harness and connector between the fuel pump relay and fuel pump resistor.

    1. Remove the F/PMP relay from the engine room No. 2 relay block.

    2. Disconnect the A16 fuel pump resistor connector.

    3. Check the resistance.

      Standard Resistance (Check for open):
      Tester Connection
      		Condition
      		Specified Condition
      F/PMP relay (4) - A16-1
      		Always
      		Below 1 Ω

      Standard Resistance (Check for short):
      Tester Connection
      		Condition
      		Specified Condition
      F/PMP relay (4) or A16-1 - Body ground
      		Always
      		10 kΩ or higher

  1. Check the harness and connector between the fuel pump resistor and fuel pump.

    1. Disconnect the A16 fuel pump resistor connector.

    2. Disconnect the S11 fuel pump connector.

    3. Check the resistance.

      Standard Resistance (Check for open):
      Tester Connection
      		Condition
      		Specified Condition
      A16-2 - S11-4
      		Always
      		Below 1 Ω

      Standard Resistance (Check for short):
      Tester Connection
      		Condition
      		Specified Condition
      A16-2 or S11-4 - Body ground
      		Always
      		10 kΩ or higher



NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR