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.
With GST
- Prepare a fuel container and a spare hose.
- Release fuel pressure from fuel line, refer to FUEL PRESSURE RELEASE .
- Remove the fuel feed hose on the fuel level sensor unit.
- Connect a spare fuel hose where the fuel feed hose was removed.
- Turn ignition switch OFF.
- Set voltmeters probe between ECM terminal 119 (fuel level sensor signal) and ground.
- Turn ignition switch ON.
- Check voltage between ECM terminal 119 and ground and note it.
- Drain fuel by 30 L (7-7/8 US gal, 6-5/8 lmp gal) from the fuel tank using proper equipment.
- Fill fuel into the fuel tank for 30 L (7-7/8 US gal, 6-5/8 lmp gal).
- Confirm that the voltage between ECM terminal 119 and ground changes more than 0.03V during step 8 - 10.
If NG, check component of fuel level sensor, refer to FUEL LEVEL SENSOR SIGNAL INSPECTION .
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.