LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2015 >> 5 Touring >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> Engine Control System Operation Inspection >> Fuel Pump Operation Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pump Operation Inspection

  1. Remove the fuel-filler cap.
  2. Switch the ignition to ON.
  3. Turn the fuel pump relay from off to on using the FP PID and inspect if the operation sound is heard.
    • If no operation sounds is heard, proceed to next step.
  4. Measure the voltage at wiring harness side fuel pump connector terminal B.

    Specification 

    • B+ (Ignition at on)
    • If the voltage is as specified, inspect the following:
      • Fuel pump continuity
      • Fuel pump GND
      • Wiring harness between fuel pump relay terminal E and PCM terminal 1BG
    • If not as specified, inspect the following:
      • Fuel pump relay (See RELAY INSPECTION .)
      • Wiring harness connector (Battery-Fuel pump relay-Fuel pump)