Fuel Pump Speed Control Operation Inspection

Perform the fuel pump operation inspection.
Verify that fuel pump speed control relay operation sound is heard, while cranking the engine.
- If operation sound is not heard, inspect the following:
  - Fuel pump speed control relay
  - Wiring harnesses and connectors (Main relay-fuel pump speed control relay-PCM terminal 1K)
Remove the fuel-filler cap.
Verify that the fuel pump unit operation sound frequency at cranking is higher than during idle.
- If it cannot verified, inspect for the following:
  - Fuel pump resister
  - Fuel pump speed control relay
  - Wiring harnesses and connectors (open circuit at fuel pump relay terminal C-fuel pump terminal B)