Fuel Delivery and Air Induction: Testing and Inspection

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

ON-VEHICLE INSPECTION

1. CHECK FUEL PUMP OPERATION
(a) Connect an intelligent tester or Techstream to the DLC3.
(b) Turn the ignition switch to ON.
NOTE: Do not start the engine.

(c) Turn the tester ON.
(d) Select the following menu items:
1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / FUEL PUMP/SPD / ON
2. Techstream - Select: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump Speed / ON

(e) Touch the fuel hose in the engine compartment to check the fuel flow, and you will be able to hear the sound of the fuel pump.
(f) Stop the fuel pump.
If there is no fuel flow, the fuel pump may not be operating. Check the fuel pump circuit Fuel Pump.
2. CHECK FUEL PRESSURE
(a) Using a voltmeter, measure the battery voltage.
Standard voltage:
11 to 14 V
(b) Discharge the fuel system pressure Removal.
(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: 09268-31011
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 Vehicle Damage Warnings.