Fuel Pump Operation Inspection

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.

CAUTION:

Connecting the wrong check connector terminal may possibly cause malfunction. Carefully connect the specified terminal only.

Short the check connector terminal F/P to the body GND using a jumper wire.
Remove the fuel-filler cap.
Turn the ignition switch to the ON position.
Verify that the fuel pump operation sound is heard.
- If no operation sound heard, proceed to next step.
Measure the voltage at the wiring harness side fuel pump connector terminal B.
Specification

8.0-11.5 V (Ignition switch at on)
- If the voltage is as specified, inspect the following:
  - Fuel pump continuity
  - Fuel pump GND
  - Wiring harness between fuel pump relay and PCM terminal 5P
- If not as specified, inspect the following:
  - Fuel pump relay
  - Fuel pump resister
  - Wiring harness and connector (Main relay-fuel pump relay-fuel pump resister - fuel pump)