On-Vehicle Inspection

1. Connect the TOYOTA hand-held tester to the DLC3.
2. Turn the ignition switch ON and TOYOTA hand-held tester main switch ON.
   NOTE: Do not start the engine.
3. Select the active test mode on the TOYOTA hand-held tester.
4. Please refer to the TOYOTA hand-held tester operators manual for further details.
   Fig 1: Connecting TOYOTA Hand Held Tester To DLC 3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. If you have no TOYOTA hand-held tester, connect the positive (+) lead from the battery to terminal 4 of the connector, and the negative (-) lead to terminal 5.
   Fig 2: Connecting Positive (+) Lead From Battery To Terminal 4 Of Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Check that there is pressure in the fuel inlet pipe from the fuel line.

   HINT:

   If there is fuel pressure, you will hear the sound if fuel following. If there is no pressure, check these parts, Fusible link, Fuses, EFI Main relay, Fuel pump, ECM, and Witting connector.

7. Turn the ignition switch to LOCK.
8. Disconnect the TOYOTA hand-held tester from the DLC3.

Fig 3: Checking Pressure In Fuel Inlet Pipe From Fuel Line

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the battery positive voltage is above 12 V.
   Fig 4: Checking Battery Positive Voltage Is Above 12 V

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the negative (-) terminal cable from the battery.
3. Purchase the new fuel tube and take out the fuel tub connector from its pipe.

   Part No.:

   • 1ZZ-FE: 23901-22100
   • 2ZZ-GE: 23271-88600
4. Remove the fuel pipe clamp.
   Fig 5: Disconnecting Negative (-) Terminal Cable From Battery

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Disconnect the fuel tube (fuel tube connector) from the fuel pipe.
   CAUTION:

   • Perform disconnecting operations of the fuel tube connector (quick type) after observing the precautions.
   • As there is retained pressure in the fuel pipe line, prevent if from splashing inside the engine comportment.
   Fig 6: Disconnecting Fuel Tube (Fuel Tube Connector) From Fuel Pipe

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Install SST (pressure gauge) as shown in the illustration by using SST and fuel tube connector.
   • SST 09268-41047 (95336-08070), 09268-45014 (09268-41200, 09268-41220, 09268-41250)
7. Wipe off any splattered gasoline.
8. Reconnect the negative (-) terminal cable to the battery.
   Fig 7: Install SST Pressure Gauge

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Connect the TOYOTA hand-held tester to the DLC3.

   If you have no TOYOTA hand-held tester, connect the positive (+) lead from the battery to terminal 4 of the connector, and the negative (-) lead to terminal 5.

10. Measure the fuel pressure.
    • Fuel pressure: 301 - 347 kPa (3.1 - 3.5 kgf/cm ²  , 44 - 50 psi) 

    If pressure is high, replace the fuel pressure regulator.

    If pressure is low, check the Fuel hoses and connections, Fuel pump, Fuel filter, and Fuel pressure regulator.

    Fig 8: Connecting Positive (+) Lead From Battery To Terminal 4 Of Connector

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
11. Disconnect the TOYOTA hand-held tester from the DLC3.
12. Start the engine.
13. Measure the fuel pressure at idle.
    • Fuel Pressure: 301 - 347 kPa (3.1 - 3.5 kgf/cm ²  , 44 - 50 psi) 
14. Stop the engine.
15. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
    • Fuel Pressure: 147 kPa (1.5 kgf/cm ²  , 21 psi) or more 

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

16. After checking fuel pressure, disconnect the negative (- terminal cable from the battery and carefully, remove the SST and fuel tube connector to prevent gasoline from splashing.
    • SST 09268-41047 (95336-08070), 09268-45014 (09268-41200, 09268-41220, 09268-41250)
17. Reconnect the fuel tube (fuel tube connector).
    CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.
    Fig 9: Reconnecting Fuel Tube (Fuel Tube Connector)

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
18. Install the fuel pipe clamp.
19. Reconnect the negative (-) terminal cable to the battery.
    Fig 10: Installing Fuel Pipe Clamp

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
20. Check for fuel leakage.

Using an ohmmeter, measure the resistance between terminals 4 and 5.

• Resistance: 0.2 - 3.0 Ω at 20°C (68°F) 

If the resistance is not as specified, replace the fuel pump.

Fig 11: Measuring Resistance Between Terminals 4 & 5 Using An Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Connect the positive (+) lead from the battery to terminal 4 of the connector and the negative (-) terminal 5. Check that the pump operates.

Fig 12: Connecting Positive (+) Lead From Battery To Terminal 4 Of Connector & Negative (-) Terminal 5

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If operation is not as specified, replace the fuel pump or lead wire.