Fuel Delivery and Air Induction: Testing and Inspection

2GR-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.

NOTICE:
Do not start the engine.

(3) Turn the Techstream main switch on.

(4) Select the following menu items: Power train / Engine and ECT / Active Test / Control the Fuel Pump Speed.

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

(b) Inspect for fuel leaks (*1).

(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) 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 : 09268-31012

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.

(h) Connect the Techstream to the DLC3.

(i) Select the following menu items: Power train / Engine and ECT / Active Test / Control the Fuel Pump Speed.

(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 the 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

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

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

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

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

(s) Inspect for fuel leaks (*1).