Fuel Pump Operation Inspection

Fuel Pump Operation Inspection

If simulation function of WDS or equivalent is not used:

1. Connect the WDS or equivalent to the DLC-2.
2. Remove the fuel-filler cap.
3. Turn the ignition switch to the ON position.
4. Turn the fuel pump relay from off to on using the FP PID and inspect if the operation sound of the fuel pump is heard.
- If no operation sound is heard, proceed to the next step.

5. Measure the voltage at the wiring harness side fuel pump connector terminal B with the FIP PID turned on.
- If the voltage is as specified, inspect the following:
- Fuel pump continuity
- Fuel pump ground
- Wiring harness between the fuel pump relay and PCMM terminal 4Q

- It not as specified inspect the following:
- Fuel pump relay
- Fuel pump speed control relay
- Wiring harness connector (Main relay-fuel pump relay-fuel pump resister-fuel pump.)

Specification: 8.0 - 11.5 V (Ignition switch at ON)