Fuel Pressure: Testing and Inspection

2AZ-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 / 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) Check for fuel leaks.

(1) There is no fuel leakage after performing maintenance anywhere on the fuel system. 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 Fuel System: Precaution.

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

(d) Disconnect the fuel main tube Removal.

(e) Install SST (pressure gauge) as shown in the illustration.





SST : 09268-31013

95336-08070

90467-13001

09268-41500

SST : 09268-45014

09268-41200

09268-41220

09268-41250

(f) Wipe up any gasoline.

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

(h) Start the engine.

(i) Measure the fuel pressure at idle.

Fuel pressure:

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

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

(j) After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST and the fuel tube connector to prevent fuel from spilling.

(k) Reconnect the fuel main tube Installation.

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