Fuel Siphoning Procedure Using Fuel Pump

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.

Complete the "BEFORE SERVICE PRECAUTION". (Refer to BEFORE SERVICE PRECAUTION .)
Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Disconnect the quick release connector shown in the figure. (Refer to QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION .)

Fig 1: Identifying Quick Release Connector
Courtesy of MAZDA
Connect a long hose to the disconnected quick release connector and drain the fuel into a container used for collecting gasoline.
Drain the fuel from the fuel tank using the following procedure:
Using M-MDS
- Connect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
- Connect the M-MDS to the DLC-2.
- Using the simulation function "FP", start the fuel pump. (Refer to ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)] .)
  - If the fuel pump cannot be operated, remove the fuel using the procedure in the reference. (Refer to FUEL SIPHONING PROCEDURE NOT USING FUEL PUMP .)
- Remove the fuel pump relay.
  
  Fig 2: Identifying Fuel Pump Relay
  Courtesy of MAZDA
  CAUTION:
  - Short the specified terminals because shorting the wrong terminal of the relay and fuse block may cause malfunctions.
- Using a jumper wire, short fuel pump relay terminals C and D in the relay and fuse block.
  
  Fig 3: Shorting Fuel Pump Relay Terminals Using Jumper Wire
  Courtesy of MAZDA
- Connect the negative battery terminal and operate the fuel pump. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  - If the fuel pump cannot be operated, remove the fuel using the procedure in the reference. (Refer to FUEL SIPHONING PROCEDURE NOT USING FUEL PUMP .)
  CAUTION:
  - The fuel pump could be damaged if it is operated 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.
Stop the fuel pump using the following procedure.
Using M-MDS
- Using the simulation function "FP", stop the fuel pump. (Refer to ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)] .)
- Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Without using M-MDS
- Remove the jumper wire to stop the fuel pump.
- Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)