Without Using WDS Or Equivalent
- Practice the fuel pump operation inspection.
- Verify that there is an operation sound from the fuel pump speed control relay when the engine cranks.
- If the operation sound cannot be verified, inspect the following and repair or replace the malfunctioning part.
- Stuck fuel pump speed control relay
- Wiring harnesses, connectors between the fuel pump speed control relay and PCM terminal 4M
- Verify that the rotation sound of the fuel pump is higher (higher frequency) than when idling when idling while the engine cranking.
- If it cannot be verified, inspect the following inspections and repair or replace the malfunctioning part.
Courtesy of MAZDA MOTORS CORP.
- Stuck fuel pump speed control relay
- Fuel pump resistor
- Wiring harnesses open circuit between fuel pump speed control relay and fuel pump
- Wiring harnesses, connectors between fuel pump speed control relay and PCM