Fuel Delivery and Air Induction: Testing and Inspection

ON-VEHICLE INSPECTION

1. CHECK FUEL PUMP OPERATION AND FUEL LEAK

a. Connect the intelligent tester or Techstream to the DLC3.
b. Turn the ignition switch ON and intelligent tester or Techstream main switch ON.

NOTE: Do not start the engine.

c. Intelligent tester: Enter the given menus: DIAGNOSIS /ENHANCED OBD II / ACTIVE TEST / FUEL PUMP /SPD.
d. Techstream: Enter the given menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
e. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.




f. Check that the pulsation damper screw rises up when the fuel pump operates.
If the operation is not as specified, check the given parts:
- Fusible link
- Fuses
- Circuit opening relay
- Fuel pump
- ECM
- Wiring connections

g. Turn the ignition switch OFF.
h. Disconnect the intelligent tester or Techstream from the DLC3.

2. CHECK FUEL PRESSURE
a. Check that the battery voltage is 11 to 14 V.
b. Discharge fuel system pressure.
c. Disconnect the negative (-) terminal cable from the battery.

NOTE:
- Some systems need to be initialized after the cable is reconnected.
- After the ignition switch is turned OFF, the navigation system requires approximately 90 seconds to record various types of memory and settings. As a result, after turning the ignition switch OFF, wait 90 seconds or more before disconnecting the cable from the negative (-) battery terminal.

d. Remove the front fuel pipe from the LH delivery pipe.




e. Install the front fuel pipe and SST (pressure gauge) to the delivery pipe with the 3 gaskets and another SST (adapter).

SST 09268-45014 (09268-41200, 09268-41190, 90405-06167, 09268-41210, 90467-11009)

f. Wipe off any splattered gasoline.
g. Reconnect the cable to the negative (-) battery terminal.
h. Connect the intelligent tester or Techstream to the DLC3 (refer to the "CHECK FUEL PUMP OPERATION AND FUEL LEAK" procedure).

i. Measure the fuel pressure.

Fuel pressure: 265 to 304 kPa (2.7 to 3.1 kgf/sq.cm, 38 to 44 psi)

If the pressure is high, replace the fuel pressure regulator. If the pressure is low, check the given parts:
- Fuel hoses and connections
- Fuel pump
- Fuel filter
- Fuel pressure regulator

j. Disconnect the intelligent tester or Techstream from the DLC3.
k. Start the engine.
l. Measure the fuel pressure at idle.

Fuel pressure: 265 to 304 kPa (2.7 to 3.1 kgf/sq.cm, 38 to 44 psi)

m. Stop the engine.
n. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.

Fuel pressure: 147 kPa (1.5 kgf/sq.cm, 21 psi) or more If the pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.

o. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent gasoline from splashing.
p. Reinstall the front fuel pipe to the LH delivery pipe.
q. Reconnect the negative (-) terminal cable to the battery.
r. Check for fuel leaks (refer to the "CHECK FUEL PUMP OPERATION AND FUEL LEAK" procedure).