Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fuel Pump Ecu Circuit
Turn ignition off. Disconnect electrical connector from fuel pump ECU. See COMPONENT LOCATIONS under INTRODUCTION. Check for continuity between chassis ground and terminals "E" and DI of fuel pump ECU connector. See Fig 1. Measure voltage between chassis ground and specified terminals of fuel pump ECU connector. See FUEL PUMP ECU CIRCUIT VOLTAGE table. If continuity and voltage are not as specified, replace fuel pump ECU.
| Terminal & Condition | Volts | |||
|---|---|---|---|---|
| FP | ||||
| Sudden Racing | 12.0-14.0 | |||
| Idling | 8.0-10.0 | |||
| +B (Ignition On) | 10.0-14.0 | |||
| FPC | ||||
| Sudden Racing (1) | 4.0-6.0 | |||
| Idling | 2.5 | |||
|
||||
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.