Fuel Leakage Inspection

Using M-MDS 

1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Using the simulation function "FP", start the fuel pump. (See ON-BOARD DIAGNOSTIC TEST .)
4. Verify that there is no fuel leakage from the pressurized parts.

   Standard 

   There shall be no leakage after 5 min. 

   Fig 1: DLC-2 Location

   Courtesy of MAZDA MOTORS CORP.
5. In the case of fuel leakage, replace the following components and then do the recheck by the fuel leakage checking procedure.

• If there is leakage, replace the fuel hoses and clips.
• If there is damage on the seal on the fuel pipe side, replace the fuel pipe.

Without using M-MDS 

1. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.5] .)
2. Remove the fuel pump relay.
   CAUTION:

   • Short the specified terminals because shorting the wrong terminal of the main fuse block may cause malfunctions.
   Fig 2: Fuel Pump Relay

   Courtesy of MAZDA MOTORS CORP.
3. Using a jumper wire, short fuel pump relay terminals C and D in the main fuse block.
4. Connect the negative battery cable and operate the fuel pump. (See BATTERY REMOVAL/INSTALLATION [MZR 2.5] .)
5. Verify that there is no fuel leakage from the pressurized parts.
   Fig 3: Shorting Fuel Pump Relay Terminals C And D In Main Fuse Block Using Jumper Wire

   Courtesy of MAZDA MOTORS CORP.

   Standard 

   There shall be no leakage after 5 min. 

6. In the case of fuel leakage, replace the following components and then do the recheck by the fuel leakage checking procedure.

• If there is leakage, replace the fuel hoses and clips.
• If there is damage on the seal on the fuel pipe side, replace the fuel pipe.