Fuel System

2AR-FE FUEL: FUEL SYSTEM: ON-VEHICLE INSPECTION

1. CHECK 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 / Active Test / Control the Fuel Pump / Speed.

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

(b) Inspect for fuel leak.

(1) Check that there are no fuel leaks anywhere on the system after performing maintenance. 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) Using a voltmeter, measure the battery voltage.

Standard voltage:

11 to 14 V

(b) Discharge the fuel system pressure Service Precautions.

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

(d) Remove the No. 1 fuel pipe clamp from the fuel tube connector.





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

CAUTION:
* Always read the precautions Service Precautions before disconnecting the fuel tube connector (quick type).
* The fuel pipe line may spray fuel as a result of retained pressure that remains in it. Do not allow fuel to be sprayed in the engine compartment.
(f) Install SST (pressure gauge) and the fuel tube connector using SST as shown in the illustration.





SST : 09268-31012

09268-41500

90467-13001

95336-08070

SST : 09268-45014

09268-41200

09268-41220

09268-41250

(g) Wipe up any gasoline.

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

(i) Connect the Techstream to the DLC3.

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

NOTICE:
Do not start the engine.

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

(l) Measure the fuel pressure.

Standard fuel pressure:

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

If the pressure is high, replace the fuel pressure regulator.

If the pressure is low, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.

(m) Disconnect the Techstream from the DLC3.

(n) Start the engine.

(o) Measure the fuel pressure at idle.

Standard fuel pressure:

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

(p) Stop the engine.

(q) 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 more

If the pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.

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

(s) Reconnect the fuel main tube (fuel tube connector).

CAUTION:
Always read the precautions Service Precautions before connecting the fuel tube connector (quick type).

(t) Install the No. 1 fuel pipe clamp to the fuel tube connector.

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