Fuel Delivery and Air Induction: Service Precautions

4GR-FSE FUEL: FUEL SYSTEM: PRECAUTION

NOTICE:
Before working on the fuel system, disconnect the cable from the negative (-) battery terminal.

CAUTION:
* Do not smoke or be near an open flame when working on the fuel system.
* Keep gasoline away from rubber or leather parts.
* Do not allow fuel to spray when removing the pipe between the high pressure side fuel pump and the fuel injector. The fuel in the pipe is highly pressurized.
1. PRECAUTION (w/ Navigation System for HDD)

NOTICE:
After the engine switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.

2. DISCHARGE FUEL SYSTEM PRESSURE

CAUTION:
* Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
* Even after discharging the fuel pressure, place a piece of cloth or equivalent over fittings as you separate them to reduce the risk of fuel spray on yourself or in the engine compartment.
(a) Disconnect the cable from the negative (-) battery terminal.

(b) Remove rear seat cushion assembly LH.

(c) Remove the No. 2 rear floor service hole cover.

(d) Disconnect the fuel pump connector.





(e) Connect the cable to the negative (-) battery terminal.

(f) Start the engine. After the engine has stopped on its own, turn the engine switch off.

HINT
Some DTCs may be stored. Clear the DTCs before proceeding to the next step.

(g) Crank the engine again, then check that the engine does not start.

(h) Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.

(i) Connect the fuel pump connector.

3. FUEL SYSTEM

(a) When disconnecting a fuel pressure line, a large amount of gasoline will spill out. Perform the following procedure:

(1) Discharge fuel system pressure.

(2) Put a container under the connection.

(3) Disconnect the fuel pump tube.

(4) Drain the fuel remaining inside the fuel pump tube into the container.

(5) Cover the disconnected fuel pump tube with a plastic bag to prevent damage and contamination.





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(b) Perform the following procedure when disconnecting a fuel tube connector (quick type A).

(1) Remove the fuel pipe clamp.





(2) Check for foreign matter on the pipe and around the connector before disconnecting them. Clean them if necessary.

(3) If the connector and pipe are stuck, pinch the connector, and push and pull the pipe to disconnect them.





NOTICE:
Do not use any tools in this procedure.

(4) Check for foreign matter on the seal surface of the disconnected pipe. Clean it if necessary.

(5) Cover the disconnected pipe and connector with a plastic bag to prevent damage and contamination.





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(c) Perform the following procedure when connecting a fuel tube connector (quick type A).

(1) Check that there is no damage or foreign matter on the part of the pipe that contacts the connector.





(2) Align the axis of the connector with the axis of the pipe. Push the pipe into the connector until the connector makes a "click" sound. If the connection is too tight, apply a light coat of new engine oil to the tip of the pipe.

(3) After connecting the pipe and connector, try to pull them apart to confirm that they are securely connected.





(d) Perform the following procedure when disconnecting a fuel tube connector (quick type B).





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(1) Check that there is no damage or foreign matter on the part of the pipe that contacts the connector.

(2) Detach the 2 claws of the connector retainer. Push down on the connector and disconnect it from the pipe.

HINT
Be sure to disconnect it by hand.

(3) If the connector and pipe are stuck, pinch the fuel pipe by hand and push or pull the connector to disconnect it.





(4) Check for foreign matter on the seal surface of the disconnected pipe. Clean it if necessary.

(5) Cover the disconnected pipe and connector with a plastic bag to prevent damage and contamination.





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4. INSPECT FOR FUEL LEAK

(a) Check that there are no fuel leaks anywhere on the fuel system after performing maintenance Fuel System.