Fuel Pump Control Circuit [08/2013 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.
5. Check whether operating sounds can be heard while operating the fuel pump using the Techstream.

   OK

   Operating sounds can be heard from fuel pump.

   RESULT
   
   

   Result	Proceed to
   NG	A
   OK	B

B → See step   13 

A: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the fuel pump ECU connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   N12-6 (+B) - Body Ground	Engine switch on (IG)	11 to 14 V

NG → See step   9 

OK: Go to next step 

1. Disconnect the fuel pump ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N12-3 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the fuel pump connector.
2. Disconnect the fuel pump ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N1-4 (B2) - N12-1 (FP)	Always	Below 1 Ω
   N1-5 (E2) - N12-2 (FP-)	Always	Below 1 Ω
   N1-4 (B2) or N12-1 (FP) - Body ground	Always	10 kΩ or higher
   N1-5 (E2) or N12-2 (FP-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Inspect the fuel pump. Refer to INSPECTION [08/2013 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump. Refer to INITIALIZATION [08/2013 - ] .

NG → See step   21 

OK: Go to next step 

1. Disconnect the fuel pump ECU connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N12-5 (FPC) - A38-52 (FPC)	Always	Below 1 Ω
   N12-5 (FPC) or A38-52 (FPC) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the fuel pump ECU. Refer to REMOVAL [08/2013 - ] .

NEXT: Go to next step 

1. Check the fuel pump operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   19 

OK → END 

1. Inspect the EFI NO. 2 relay. Refer to ON-VEHICLE INSPECTION [08/2013 - ] - Step 3 .

NG → REPLACE EFI NO. 2 RELAY 

OK: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the EFI NO. 2 relay from the engine room relay block.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   EFI NO. 2 relay (1) - Body ground	Engine switch on (IG)	11 to 14 V
   EFI NO. 2 relay (5) - Body ground	Always	11 to 14 V

NG → See step   12 

OK: Go to next step 

1. Remove the EFI NO. 2 relay from the engine room relay block.
2. Disconnect the fuel pump ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   EFI NO. 2 relay (3) - N12-6 (+B)	Always	Below 1 Ω
   EFI NO. 2 relay (3) or N12-6 (+B) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PUMP RELAY - BODY GROUND) 

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the cable from the positive (+) battery terminal.
3. Remove the EFI NO. 2 relay from the engine room relay block.
4. Remove the integration relay from the engine room relay block.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   EFI NO. 2 relay (1) - 1B-4	Always	Below 1 Ω
   EFI NO. 2 relay (5) - Battery positive (+) terminal	Always	Below 1 Ω
   EFI NO. 2 relay (2) - Body ground	Always	Below 1 Ω
   EFI NO. 2 relay (1) or 1B-4 - Body ground	Always	10 kΩ or higher
   EFI NO. 2 relay (5) or Battery positive (+) terminal - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   20 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the fuel tank assembly. Refer to REMOVAL [08/2013 - ] .
2. Remove the fuel pump from the fuel tank assembly.
3. Clean the fuel pump to completely remove any remaining fuel.
4. Connect the fuel pump connector.
   WARNING:

   Confirm that no fuel remains inside or on the outside of the fuel pump.

5. Connect the Techstream to the DLC3.
6. Turn the engine switch on (IG).
7. Turn the Techstream on.
8. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump Duty.
9. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Techstream Operation	Specified Condition
   1 - 2	FPC Duty: 25%	3.2 to 4.05 V
   	FPC Duty: 80%	8.8 to 12.5 V

10. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
11. Operate the fuel pump using the active test function and measure the voltage according to the value(s) in the table below.

    Standard Voltage

    Tester Connection	Techstream Operation	Specified Condition
    1 - 2	ON (FPC Duty: 90%)	9.0 to 14.0 V

    HINT: 

    • Be sure to measure the voltage with all of the connectors connected.
    • Before performing this inspection, check that the battery voltage is between 11 and 14 V (not depleted).

NG → See step   16 

OK: Go to next step 

1. Disconnect the fuel pump ECU connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N12-5 (FPC) - A38-52 (FPC)	Always	Below 1 Ω
   N12-5 (FPC) or A38-52 (FPC) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the fuel pump. Refer to REMOVAL [08/2013 - ] .

   HINT: 

   Perform "Inspection After Repair" after replacing the fuel pump. Refer to INITIALIZATION [08/2013 - ] .

NEXT → See step   17 

1. Replace the fuel pump ECU. Refer to REMOVAL [08/2013 - ] .

NEXT: Go to next step 

1. Check the fuel pump operation.

   OK

   Malfunction has been repaired successfully.

NG → See step   18 

OK → END