Mazda MX-5 Miata / Grand Touring. Manual - part 114

1. Follow "BEFORE SERVICE PRECAUTION" before performing any work operations to prevent fuel

from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION [LF] .)

2. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [LF] .)

3. Disconnect the negative battery cable.

4. Disconnect the quick release connector (in the engine compartment). (See QUICK RELEASE

CONNECTOR (FUEL SYSTEM) REMOVAL/INSTALLATION [LF] .)

5. Turn the lever of the SST parallel to the hose as shown in Fig. 8 .

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

Fig. 8: Inserting SST Quick Release Connector Into Fuel Pipe Until Click Is Heard
Courtesy of MAZDA MOTORS CORP.

engine stopped.

2008 Mazda MX-5 Miata Grand Touring

2008 ENGINE Fuel System - MX-5 Miata

7. Verify that the quick release connector is firmly connected by pulling it by hand.

8. Start the fuel pump using the following procedure:

Using M-MDS or equivalent

1. Connect the negative battery cable.

2. Connect the M-MDS or equivalent to the DLC-2.

Fig. 9: Locating DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.

3. Start the fuel pump using the "FP" simulation function.

Not using M-MDS or equivalent

1. Short the check connector terminal F/P to ground using a jumper wire.

2008 Mazda MX-5 Miata Grand Touring

2008 ENGINE Fuel System - MX-5 Miata

Fig. 10: Checking Connector Terminal F/P To Ground Using Jumper Wire
Courtesy of MAZDA MOTORS CORP.

2008 Mazda MX-5 Miata Grand Touring

2008 ENGINE Fuel System - MX-5 Miata

Fig. 11: Identifying F/P Connector Terminal
Courtesy of MAZDA MOTORS CORP.

2. Turn the ignition switch to the ON position to operate the fuel pump.

9. Operate the fuel pump for 10 s .

10. Measure the fuel line pressure.



If not within the specification, inspect the following:

If it less than the specification:



Fuel pump unit



Fuel line leakage

If it exceeds the specification:



Fuel line clogging

Fuel pressure (Reference)

350-410 kPa {3.57-4.18 kgf/cm

, 50.8-59.4 psi}

2008 Mazda MX-5 Miata Grand Touring

2008 ENGINE Fuel System - MX-5 Miata