Fuel Pump Operation Inspection

Remove the fuel-filler cap.
Start the fuel pump using the following procedure:
Using WDS or equivalent
1. Connect the WDS or equivalent to the DLC-2.
  
  Fig 1: Identifying DLC-2 Connector
  Courtesy of MAZDA MOTORS CORP.
2. Start the fuel pump using the "FP" simulation function.
Not using WDS or equivalent
1. Disconnect the negative battery cable.
2. Remove the fuel pump relay.
  CAUTION:
  - Be careful to short the specified terminal as shorting the wrong terminal of the main fuse block may cause a malfunction.
  Fig 2: Identifying Fuel Pump Relay
  Courtesy of MAZDA MOTORS CORP.
3. Using a jumper wire, short fuel pump relay terminals C and D and connect the negative battery cable to start the fuel pump.
  
  Fig 3: Jumping Fuel Pump Relay Terminals C And D
  Courtesy of MAZDA MOTORS CORP.
Verify that operation sound is heard from the fuel pump.
- If the operation sound cannot be verified, measure the voltage at fuel pump wiring harness-side connector terminal A.
  - If as specified, inspect the following:
    - Fuel pump continuity
  - If not within the specification, inspect the following:
    - Fuel pump relay
    - Wiring harnesses and connectors between main relay-fuel pump relay-fuel pump
Standard
1. B+ (Ignition switch at ON)
Fig 4: Identifying Fuel Pump Unit Harness Connector Terminals
Courtesy of MAZDA MOTORS CORP.