Fuel System

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

1. CHECK FOR FUEL PUMP OPERATION AND FUEL LEAKS

(a) Check fuel pump operation.

(1) Connect Techstream to the DLC3.

(2) Turn the ignition switch on (IG) and turn the tester main switch on.

NOTICE:
Do not start the engine.

(3) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD.

(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) Check for fuel leaks.

(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.

(c) Turn the ignition switch off.

(d) Disconnect Techstream from the DLC3.

2. CHECK FUEL PRESSURE

(a) Discharge the fuel system pressure Service Precautions.

(b) Using a voltmeter, measure the battery voltage.

Standard voltage:

11 to 14 V

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

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

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





SST : 09268-31011

09268-41500

90467-13001

95336-08070

SST : 09268-45014

09268-41200

09268-41220

09268-41250

(f) Wipe up any spilled gasoline.

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

(h) Connect Techstream to the DLC3.

(i) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP / SPD.

(j) Measure the fuel pressure.

Fuel pressure:

304 to 343 kPa (3.1 to 3.5 kgf*cm2, 44.1 to 49.7 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.

(k) Disconnect Techstream from the DLC3.

(l) Start the engine.

(m) Measure the fuel pressure at idle.

Fuel pressure:

304 to 343 kPa (3.1 to 3.5 kgf*cm2, 44.1 to 49.7 psi)

(n) Stop the engine.

(o) Check that the fuel pressure remains as specified for 5 minutes after the engine stops.

Fuel pressure:

147 kPa (1.5 kgf*cm2, 21 psi) or more

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

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

(r) Reconnect the fuel tube to the main fuel tube (fuel tube connector).

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

(t) Check for fuel leaks.

(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.