On-Vehicle Inspection [08/2015 - ]: Procedure

CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
  NOTE:
  Do not start the engine.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Pump Speed Control.
5. Check the fuel pump operation.
  1. Check for pressure in the fuel inlet tube from the fuel line. Check that the sound of fuel flowing in the fuel tank can be heard.
    If there is no sound, check the integration relay, fuel pump, ECM and wiring connector.
6. Inspect for fuel leaks (Refer to PROCEDURE - Step 7 ).

CHECK FUEL PRESSURE

Check the battery voltage (Refer to PROCEDURE - Step 1 [08/2015 - 08/2019] , or refer to PROCEDURE - Step 1 [08/2019 - ] ).
Discharge the fuel system pressure (Refer to PRECAUTION [08/2015 - ] ).
Disconnect the cable from the negative (-) battery terminal.
NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [08/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - 08/2022] , or refer to INITIALIZATION [08/2022 - ] ).

Disconnect the No. 1 fuel pipe sub-assembly (Refer to PRECAUTION [08/2015 - ] ).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Install SST (pressure gauge) as shown in the illustration.

SST: 09268-45101
1. 09268-41250
2. 09268-41260
3. 09268-41280
4. 09268-41500
5. 09268-41700
6. 95336-08070

TEXT IN ILLUSTRATION

*1	SST (Hose Band)
*2	SST (T-joint)
*3	SST (Gauge)
*4	SST (Hose Joint)
*5	SST (Hose)
*6	SST (Fuel Tube Connector)
*7	Fuel Tube Sub-assembly
*8	Fuel Pipe

Wipe off any gasoline.
Reconnect the cable to the negative (-) battery terminal.
NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [08/2015 - 08/2019] , or refer to INITIALIZATION [08/2019 - 08/2022] , or refer to INITIALIZATION [08/2022 - ] ).
Operate the fuel pump.
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
  NOTE:
  Do not start the engine.
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Pump Speed Control / ON.
Measure the fuel pressure.
Standard fuel pressure

321 to 327 kPa (3.27 to 3.33 kgf/cm² , 46.5 to 47.4 psi)

If the pressure is higher than the specification, replace the fuel pressure regulator.

If the pressure is below the specification, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.
Start the engine.
Measure the fuel pressure.
Standard fuel pressure

321 to 327 kPa (3.27 to 3.33 kgf/cm² , 46.5 to 47.4 psi)

If the pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
Stop the engine.
Check that the fuel pressure remains as specified for 5 minutes after the engine stops.
Standard fuel pressure

147 kPa (1.5 kgf/cm² , 21 psi) or higher

If the pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
Disconnect the cable from the negative (-) battery terminal and carefully remove SST and the fuel tube connector to prevent gasoline from spraying.
Connect the No. 1 fuel pipe sub-assembly (Refer to PRECAUTION [08/2015 - ] ).
Inspect for fuel leaks (Refer to PROCEDURE - Step 7 ).