Using WDS Or Equivalent

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Connect the WDS or equivalent to the DLC-2.
Remove the fuel filler cap.
Turn the ignition switch to the ON position.
Verify that the fuel pump can be heard operating when FP is changed from off to on position using simulation function FP.

Fig 1: Locating Data Link Connector
Courtesy of MAZDA MOTORS CORP.
- If it cannot be verified, inspect for a voltage of 3.76-5.28 V on the fuel pump wiring harness-side connector terminal B.
- If it is within the specification, inspect the following.
  - Fuel pump continuity inspection
  - Wiring harness between fuel pump terminal D and GND
    
    Fig 2: Identifying Fuel Pump Unit Connector Terminals
    Courtesy of MAZDA MOTORS CORP.
- If not within the specification, inspect the following.
  - Fuel pump relay
  - Wiring harnesses, connectors between fuel pump relay, fuel pump resistor, and fuel pump
  - Wiring harnesses, connectors between main relay, fuel pump relay, and PCM
Voltage

3.76-5.28 V