On-Vehicle Inspection

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

1. CHECK FOR FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK

(a) Check fuel pump operation.

(1) Connect the Techstream to the DLC3.

(2) Turn the ignition switch to ON and turn the Techstream on.

NOTICE:
Do not start the engine.

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

(4) Check for pressure in the fuel inlet tube from the fuel line. Check that the sound of fuel flowing from the fuel tank can be heard. If no sound can be heard, check the integration relay, fuel pump, ECM and wiring connectors.

(b) Inspect for fuel leaks.

(1) Check that there are no fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.

(c) Turn the ignition switch off.

(d) Disconnect the Techstream from the DLC3.

2. CHECK FUEL PRESSURE

(a) Discharge the fuel system pressure Fuel System: Precaution.

(b) Check the battery voltage.

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

Standard Voltage:





(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.

(d) Disconnect the fuel hose from the fuel main tube.

(e) Install SST (pressure gauge) using other SST and a fuel tube connector as shown in the illustration.





Text in Illustration





SST : 09268-31013

09268-41500

90467-13001

95336-08070

SST : 09268-45014

09268-41200

09268-41220

09268-41250

(f) Wipe up any gasoline.

(g) Connect the cable to the negative (-) battery terminal.

Torque : 5.4 Nm (55 kgf-cm, 48 in-lbf)

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

(h) Connect the Techstream to the DLC3 (See step 1 in check fuel pump operation).

(i) Measure the fuel pressure.

Standard fuel pressure:

304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)

* If the fuel pressure is greater than the standard value, replace the fuel pressure regulator.

* If the fuel pressure is less than the standard value, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.

(j) Disconnect the Techstream from the DLC3.

(k) Start the engine.

(l) Measure the fuel pressure at idle.

Standard fuel pressure:

304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)

(m) Stop the engine.

(n) 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 more

If the fuel pressure is not as specified, check the fuel pump or fuel injector.

(o) After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent gasoline from spraying.

(p) Connect the fuel tube to the main fuel tube.

(q) Inspect for fuel leaks (Step 1).

(1) Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.