FUEL LINE PRESSURE INSPECTION [SKYACTIV-G 2.5T]

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Special Service Tool (SST)

49 N013 1A0D   Fuel pressure gauge set

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Warning

•  Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the “Fuel Line Safety Procedure” to prevent the fuel from spraying.

?  Fuel may cause irritation if it comes in contact with skin and eyes.

?  If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.

•  A person charged with static electricity could cause a fire or explosion, resulting in death or serious injury. Before performing work on the fuel system, discharge static electricity by touching the vehicle body.

Caution

•  Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting using cloth or soft brush, and make sure that it is free of foreign material.

1.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.5T].)

2.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

3.  Disconnect the quick release connector as shown in the figure. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

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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 quick release connector is firmly connected by pulling it by hand.

7.  Start the fuel pump using the following procedure.

Using M-MDS

1.  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Connect the M-MDS to the DLC-2.

3.  Using the simulation function “FP”, start the fuel pump. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)

Without using M-MDS

1.  Remove the fuel pump relay.

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Caution

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

2.  Using a jumper wire, short fuel pump relay terminals C and D in the relay and fuse block.

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3.  Connect the negative battery terminal and operate the fuel pump. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

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 line for restriction or leakage

If it exceeds the specification:

?  Fuel line restriction

10.  Stop the fuel pump using the following procedure.

Using M-MDS

1.  Using the simulation function “FP”, stop the fuel pump. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)

Without using M-MDS

1.  Disconnect the negative battery terminal to stop the fuel pump. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

11.  Measure the fuel hold pressure after 5 min.

•  If not within the specification, inspect the following:

?  Fuel line leakage

12.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.5T].)

13.  Disconnect the SST.

14.  Connect the quick release connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

15.  Complete the “AFTER SERVICE PRECAUTION”. (See AFTER SERVICE PRECAUTION [SKYACTIV-G 2.5T].)