Versions with petrol engines
Checking the pressure in the fuel system
Attention.
- Fuel vapors are dangerous. They are extremely flammable, causing serious injury and damage. Keep fuel away from sparks and open flames.
- Leaks in fuel lines in a pressurized system are dangerous. Fuel can ignite and cause equipment damage, serious injury, or even death. Fuel can also come into contact with human skin and eyes. To prevent this, it is essential to perform a pressure relief procedure in the fuel system.
- A person carrying a static charge can cause a fire or explosion, which could result in death or serious injury. Before working on the fuel system, you must discharge static electricity by touching the vehicle body.
- Disconnecting/connecting quick-release connectors without first cleaning their outside may cause damage to the fuel lines and quick-release connectors. Be sure to clean the quick-release connector area with a cloth or soft brush before disconnecting/connecting. Make sure there is no foreign material near the quick-release connector.
1. Perform the fuel system pressure relief procedure (see the relevant section above).
2. Disconnect the negative battery terminal.
3. Disconnect the quick release connector as shown in the figure.
4. Turn the fuel pressure gauge lever parallel to the hose as shown in the figure.
5. Insert the fuel pressure gauge quick-release connector into the fuel line until it clicks into place.
6. Make sure the quick release connector is securely connected by pulling it with your hand.
7. Start the fuel pump:
Using the M-MDS diagnostic tool
- Connect the negative battery terminal.
- Connect the M-MDS device to the DLC-2 diagnostic connector.
- Using the "FP" simulation function, turn on the fuel pump.
Without using the M-MDS diagnostic tool
- Remove the fuel pump relay.
Relay and fuse box
Caution: It is necessary to short-circuit the required terminals, since short-circuiting the wrong terminals of the relay and fuse box may cause malfunctions.
Using a jumper, short-circuit terminals C and D of the fuel pump relay in the relay and fuse box.
Connect the negative battery terminal and start the fuel pump.
8. Start the fuel pump for 10 seconds.
9. Measure the pressure in the fuel system. If the measured value does not correspond to the norm (405-485 kPa (4.13-4.94 kg/cm²)), check the following:
If the pressure value is less than normal:
- Fuel pump module.
- Fuel lines for pinching or leaks.
If the pressure value is higher than normal:
- Check fuel lines for pinching.
10. Stop the fuel pump:
Using the M-MDS diagnostic tool
- Using the "FP" simulation function, stop the fuel pump.
Without using the M-MDS diagnostic tool
- Disconnect the negative battery terminal to stop the fuel pump.
11. Measure the residual fuel pressure in the fuel system five minutes after stopping. If the measured value does not correspond to the norm (230 kPa (2.35 kg/cm²)), check the fuel lines for leaks.
12. Perform the fuel system pressure relief procedure (see the relevant section above).
13. Disconnect the fuel pressure gauge.
14. Connect the fuel line quick connector.
15. Perform operations after servicing the power supply system (see the relevant section below).
Fuel draining procedure
Attention.
- Fuel vapors are dangerous. They are extremely flammable, causing serious injury and damage. Keep fuel away from sparks and open flames.
- Leaks in fuel lines in a pressurized system are dangerous. Fuel can ignite and cause equipment damage, serious injury, or even death. Fuel can also come into contact with human skin and eyes. To prevent this, it is essential to perform a pressure relief procedure in the fuel system.
- A person carrying a static charge can cause a fire or explosion, which could result in death or serious injury. Before working on the fuel system, you must discharge static electricity by touching the vehicle body.
- Disconnecting/connecting quick-release connectors without first cleaning their outside may cause damage to the fuel lines and quick-release connectors. Be sure to clean the quick-release connector area with a cloth or soft brush before disconnecting/connecting. Make sure there is no foreign material near the quick-release connector.
1. Perform the fuel system pressure relief procedure (see the relevant section above).
2. Disconnect the negative battery terminal.
3. Disconnect the quick release connector as shown in the figure.
4. Connect a long hose to the disconnected quick-release connector and drain the fuel into a suitable container.
5. Drain the fuel from the tank:
Using the M-MDS diagnostic tool
- Connect the negative battery terminal.
- Connect the M-MDS device to the DLC-2 diagnostic connector.
- Using the "FP" simulation function, turn on the fuel pump.
Without using the M-MDS diagnostic tool
- Remove the fuel pump relay.
Relay and fuse box
Caution: It is necessary to short-circuit the required terminals, since short-circuiting the wrong terminals of the relay and fuse box may cause malfunctions.
Using a jumper, short-circuit terminals C and D of the fuel pump relay in the relay and fuse box.
Connect the negative battery terminal and start the fuel pump.
Caution: The fuel pump may be damaged if it is operated without fuel in the tank. It is necessary to monitor the amount of fuel flowing through the hose in order to stop the fuel pump in time when the fuel in the tank runs out.
6. Stop the fuel pump:
Using the M-MDS diagnostic tool
- Using the "FP" simulation function, stop the fuel pump.
- Disconnect the negative battery terminal.
Without using the M-MDS diagnostic tool
- Remove the jumper to stop the fuel pump.
- Disconnect the negative battery terminal.
Versions with diesel engines
Fuel Hose Installation Procedure
1. When connecting fuel hoses and fuel lines, make sure that they are not deformed or damaged.
2. When installing the fuel hose, determine the main and return sides and install it in a certain position.
Fuel draining procedure
Attention.
- Leaks in fuel lines in a pressurized system are dangerous. Fuel can ignite and cause equipment damage, serious injury, or even death. Fuel can also come into contact with human skin and eyes. To prevent this, it is essential to perform a pressure relief procedure in the fuel system.
- A person carrying a static charge can cause a fire or explosion, which could result in death or serious injury. Before working on the fuel system, you must discharge static electricity by touching the vehicle body.
1. Perform the procedure for preparing for servicing the power supply system.
2. Place a container to collect diesel fuel under the connecting hose of the filling pipe.
3. Disconnect the connecting hose from the filler pipe side and drain the fuel.
4. 4WD versions: Remove the additional fuel gauge module and drain the fuel.