Mazda CX-9 Grand Touring. Manual - part 416

 

  Index      Mazda     Mazda CX-9 Grand Touring - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  414  415  416  417   ..

 

 

Mazda CX-9 Grand Touring. Manual - part 416

 

 

If there is airflow, place the fuel tank upside down.  

14. Apply a pressure of 3 kPa {23 mmHg, 0.9 inHg} to port B and wait for a while. 

2WD  

Fig. 23: Identifying Fuel Pump Unit & Plug (2WD) 
Courtesy of MAZDA MOTORS CORP. 

AWD  

15. With the pressure still applied, verify that there is no airflow from port A. 

If there is airflow, replace the fuel tank.  

16. Complete the "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION [MZI-

3.7].) 

Fig. 24: Identifying Fuel Pump Unit & Plug (4WD) 
Courtesy of MAZDA MOTORS CORP. 

NONRETURN VALVE INSPECTION [MZI-3.7] 

WARNING:

Fuel is very flammable liquid. If fuel spills or leaks from the 
pressurized fuel system, it will cause serious injury or death and 

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Fuel System (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:00:01 AM

Page 20 

© 2005 Mitchell Repair Information Company, LLC. 

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

from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION [MZI-3.7].)  

2. Disconnect the negative battery cable.  

3. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION [MZI-3.7].)  

4. Siphon the fuel from the fuel tank. 

5. Verify that the nonreturn valve is closed. 

If malfunction, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZI-
3.7]
.)  

6. Verify that the nonreturn valve is not stuck open and does not open even when pulled up by a finger. 

If malfunction, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZI-
3.7]
.) 

Fig. 25: Identifying Nonreturn Valve 
Courtesy of MAZDA MOTORS CORP. 

FUEL PUMP UNIT REMOVAL/INSTALLATION [MZI-3.7] 

facility breakage. Fuel can also irritate skin and eyes. To prevent 
this, always complete the "Fuel Line Safety Procedure", while 
referring to the "BEFORE SERVICE PRECAUTION".  

NOTE:

Nonreturn valve is integrated in the fuel tank.  

The nonreturn valve is normally closed by the spring force. 

Verify the nonreturn valve operation using a mirror.  

WARNING:

Fuel line spills and leakage are dangerous. Fuel can ignite and cause 
serious injuries or death and damage. Fuel can also irritate skin and 
eyes. To prevent this, always complete the "Fuel Line Safety 
Procedure".  

Fuel line spills and leakage are dangerous. Fuel can ignite and cause 
serious injuries or death and damage. Fuel can also irritate skin and 
eyes. To prevent this, before performing the fuel pump unit 

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Fuel System (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:00:01 AM

Page 21 

© 2005 Mitchell Repair Information Company, LLC. 

1. Level the vehicle.  

2. Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION [MZI-

3.7].)  

3. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)  

4. Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7] .)  

5. Remove the fuel line schrader valve cap.  

6. Connect a long hose to the disconnected schrader valve cap and drain the fuel into a container used for 

collecting gasoline.  

7. Start the fuel pump using the following procedure. 

Fig. 26: Identifying Schrader Valve Cap & Fuel Distributor 
Courtesy of MAZDA MOTORS CORP.

removal/installation, always complete the "Fuel Leak Inspection 
After Fuel Pump Unit Installation".  

A person charged with static electricity could cause a fire or 
explosion, resulting in death or serious injury. Before draining fuel, 
make sure to discharge static electricity by touching the vehicle 
body.  

CAUTION:

Because the fuel tank is constructed such that the fuel level is higher 
than the installation surface of the fuel pump, fuel leakage could 
occur. If the fuel gauge indicates a fuel level of 3/4 or more, perform 
the following Steps 3 - 8 to drain 10-15 L {2.7-3.9 US gal, 2.2-3.2 Imp 
gal} of fuel.  

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 a cloth or soft brush, 
and make sure that it is free of foreign material.  

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Fuel System (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:00:01 AM

Page 22 

© 2005 Mitchell Repair Information Company, LLC. 

Using M-MDS  

1. Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .) 

2. Connect the M-MDS to the DLC-2.  

3. Using the simulation function "FP", start the fuel pump. 

Fig. 27: Connecting M-MDS To DLC-2 
Courtesy of MAZDA MOTORS CORP. 

Without using M-MDS  

1. Remove the fuel pump relay. 

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

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

CAUTION:

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

CAUTION:

The fuel pump could be damaged if it is operated (fuel 
pump idling) while there is no fuel in the fuel tank. Verify 
the amount of fuel being discharged from the hose and 
stop operation of the fuel pump when essentially no fuel is 
being discharged. 

 

2008 Mazda CX-9 Grand Touring 

2008 ENGINE Fuel System (MZI-3.7) - Mazda CX-9

  

Microsoft 

 

Sunday, November 15, 2009 10:00:01 AM

Page 23 

© 2005 Mitchell Repair Information Company, LLC. 

 

 

 

 

 

 

 

Content   ..  414  415  416  417   ..