Fuel Pressure: Testing and Inspection
1UR-FE FUEL: FUEL SYSTEM: ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
NOTICE:
Do not start the engine.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
(e) 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.
(f) Inspect for fuel leaks Installation.
2. CHECK FUEL PRESSURE
(a) Check the battery voltage Service Precautions.
(b) Discharge the fuel system pressure Service Precautions.
(c) Disconnect the cable from the negative (-) battery terminal.
NOTICE:
* w/ Navigation System:
After the engine switch is turned off, the display and navigation module display (navigation system) records various types of memory and settings. As a result, after turning the engine switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.
Waiting Time before Disconnecting Cable from Negative (-) Battery Terminal:
* 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 fuel hose Service Precautions.
(f) Install SST (pressure gauge) as shown in the illustration.
SST : 09268-31012
90467-13001
95336-08070
09268-41500
09268-41120
SST : 09268-45014
09268-41200
09268-41220
Text in Illustration
(g) Wipe off any gasoline.
(h) Reconnect the cable to the negative (-) battery terminal.
(i) Operate the fuel pump.
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
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 below 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) After checking the fuel pressure, 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 fuel hose Service Precautions.
(q) Inspect for fuel leaks Installation.