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
The fuel pump is an electric piston pump that doses the right amount of fuel to the heater. The fuel pump power supply is connected to the control module and grounded to the grounding point. By pulsing the feed with a varying frequency, the control module can determine the amount of fuel delivered for combustion.
The fuel pump is located at the fuel tank, connected without filter to a separately prepared tank connection.
There are diagnostics for the electronics of the fuel pump.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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