Fuel Pump Relay Operation Sound Cannot Be Verified
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
- Fuel pump relay (stuck open/closed)
- Wiring harness between IG1 relay and fuel pump relay terminal E (short, open circuit)
- Wiring harness between fuel pump relay terminal A and PCM terminal 2AW (short, open circuit) Fuel pump operation sound cannot be verified
- Fuel pump relay (stuck open or open circuit in internal circuit)
- Wiring harness between battery and fuel pump relay terminal D
- Wiring harness between fuel pump relay terminal C and fuel pump control module terminal 2B (short, open circuit)
- Fuel pump unit (inspect for continuity) (See CONTINUITY INSPECTION .)
- Wiring harness between fuel pump unit terminal A and fuel pump control module terminal 2C (short, open circuit)
- Wiring harness between fuel pump unit terminal D and fuel pump control module terminal 2E (short, open circuit)
- Wiring harness between fuel pump unit terminal B and fuel pump control module terminal 2A (short, open circuit)
- Wiring harness between fuel pump unit terminal E and fuel pump control module terminal 2F (short, open circuit)
- Wiring harness between fuel pump control module terminal 2D and body ground (open circuit, ground point looseness or lifting)
- If the inspection items are normal, inspect the fuel pump control module. (See FUEL PUMP CONTROL MODULE INSPECTION .)