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.
Structure and inner electrical connection
The fuel pump control module receives the crash message from the Crash Safety Module (ACSM). The fuel pump control module on the Body Domain Controller (BDC) is connected via the wake-up line.
The fuel pump control module is supplied from the front power distribution box with terminal 30B.
| Item | Explanation |
|---|---|
| 1 | Fuel pump control module |
| Pin | Explanation |
|---|---|
| PWM | Pulse-width modulated signal |
| Kl. 15 WUP | Wake-up line |
| Crash | Crash message |
| Terminal 31L | Terminal 31, load earth |
| Terminal 30B | Terminal 30, voltage supply |
| U | Phase U |
| V | Phase V |
| W | Phase W |
NO RELATED
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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.