Fuel Delivery and Air Induction: Testing and Inspection
1GR-FE FUEL: FUEL SYSTEM: ON-VEHICLE INSPECTION
ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION AND FUEL LEAK
(a) When using the Techstream
(1) Turn the ignition switch OFF.
(2) Connect Techstream to the DLC3.
(3) Turn the ignition switch to ON.
NOTE: Do not start the engine.
(4) Turn the tester ON.
(5) Enter the following menus:
Select: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump Speed.
(b) When not using the Techstream
(1) Remove the circuit opening relay.
(2) Using a service wire, connect terminals FP and +B of the relay block.
NOTE: Pay due attention to the terminal connecting position to avoid a malfunction.
(3) Turn the ignition switch to ON, and check that the fuel pump operates.
NOTE: Do not start the engine.
(c) Check that there are no fuel leaks after doing maintenance to the fuel system.
2. CHECK FUEL PRESSURE
(a) Prepare for inspection.
(1) Prepare a new fuel tube, and take out the fuel tube connector from the tube.
HINT: Part No. 23801-31070
(b) Prevent gasoline from spilling out Service Precautions.
(c) Disconnect the EFI fuel pipe clamp Service Precautions.
(d) Disconnect the fuel pipe No. 1 from the fuel main tube.
(e) Install SST (pressure gauge) as shown in the illustration by using the SSTs and a fuel tube connector.
SST: 09268-31012
90467-13001
95336-08070
SST: 09268-45014
09268-41200
09268-41220
09268-41250
90467-13001
(f) Wipe off any splattered gasoline.
(g) Start the engine.
(h) Measure the fuel pressure at idle.
Fuel pressure:
281 to 287 kPa (2.87 to 2.93 kgf/cm2, 40.8 to 41.7 psi)
(i) Stop the engine.
(j) Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure:
147 kPa (1.5 kgf/cm2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
(k) After checking the fuel pressure, disconnect the negative (-) terminal cable from the battery carefully, remove the SST and fuel tube connector to prevent gasoline from the splashing.
(l) Reconnect the fuel tube to the fuel main tube.
(m) Install the EFI fuel pipe clamp.
(n) Check for fuel leak.