Fuel System

1GR-FE FUEL: FUEL SYSTEM: ON-VEHICLE INSPECTION

1. CHECK FOR FUEL PUMP OPERATION AND FUEL LEAKS

(a) Connect the Techstream to the DLC3.

(1) Turn the ignition switch to ON.

NOTICE:
Do not start the engine.

(2) Turn the Techstream on.

(3) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

(b) Check 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.

(c) Inspect for fuel leaks Installation.

(1) Check that there are no fuel leaks after performing maintenance anywhere on the system.

If there are fuel leaks, repair or replace parts as necessary.

2. CHECK FUEL PRESSURE

(a) Check the battery voltage Testing and Inspection.

(b) Discharge the fuel system pressure Service Precautions.

(c) Disconnect the cable from the negative (-) battery terminal.

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

(d) Remove the fuel pipe clamp from the fuel tube connector.





(e) Disconnect the No. 1 fuel pipe sub-assembly Service Precautions.

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





SST : 09268-31013

09268-41120

09268-41500

90467-13001

95336-08070

SST : 09268-45014

09268-41200

09268-41220

Text in Illustration





(g) Wipe off any gasoline.

(h) Reconnect the cable to the negative (-) battery terminal.

NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected Repair Instruction - Initialization.

(i) Operate the fuel pump.

(1) Connect the Techstream to the DLC3.

(2) Turn the ignition switch to ON.

NOTICE:
Do not start the engine.

(3) Turn the Techstream on.

(4) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

(j) 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 lower than the specification, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.

(k) Start the engine.

(l) 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.

(m) Stop the engine.

(n) Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.

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.

(o) Disconnect the cable from the negative (-) battery terminal and carefully remove SST and the fuel tube connector to prevent gasoline from spraying.

(p) Connect the No. 1 fuel pipe sub-assembly Service Precautions.

(q) Check for fuel leaks.

(1) Check that there are no fuel leaks after performing maintenance anywhere on the system.

If there are fuel leaks, repair or replace parts as necessary.