FUEL LINE PRESSURE INSPECTION[L3]

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Warning

•  Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause death or serious injuries and damage. To prevent this, always carry out the following procedure with the engine stopped.

1.  Perform the "Fuel Line Safety Procedure" referring to the BEFORE SERVICE PRECAUTION. (See BEFORE SERVICE PRECAUTION[L3].)

2.  Disconnect the negative battery cable.

3.  Disconnect the quick release connector of the engine compartment side. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION[L3].)

4.  Turn the lever of the SST parallel to the hose as shown in the figure.

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5.  Insert the SST quick release connector into the fuel pipe until a click is heard.

6.  Verify that the installation is secure by pulling the quick release connector.

7.  Start the fuel pump using the following procedure.

Using M-MDS

1.  Connect the negative battery cable.

2.  Connect the M-MDS to the DLC-2.

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3.  Using the simulation function “FP”, start the fuel pump.

Without using M-MDS

1.  Remove the fuel pump relay.

Caution

•  Short the specified terminals because shorting the wrong terminal of the main fuse block may cause malfunctions.

2.  Using a jumper wire, short fuel pump relay terminals A and E in the main fuse block.

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3.  Connect the negative battery cable and operate the fuel pump.

8.  Operate the fuel pump for 10 s.

9.  Measure the fuel line pressure.

•  If not within the specification, inspect the following:

If it less than the specification:

―  Fuel pump unit

―  Fuel leakage

If it exceeds the specification:

―  Pressure regulator clogging

10.  Stop the fuel pump using the following procedure:

Using M-MDS

1.  Stop the fuel pump using the FP simulation function.

Without using M-MDS

1.  Disconnect the negative battery cable to stop the fuel pump.

11.  Measure the fuel hold pressure after 5 min.

•  If not within the specification, inspect the following:

―  Fuel line for clogging or leakage

12.  Disconnect the SST.

13.  Connect the quick release connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION[L3].)

14.  Inspect all parts by performing the AFTER SERVICE PRECAUTION. (See AFTER SERVICE PRECAUTION[L3].)