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.
Normal Braking
| Solenoid valve | State | Valve | Passage | Pump motor |
|---|---|---|---|---|
| IN (NO) | OFF | OPEN | Master cylinder <==> Wheel cylinder | OFF |
| OUT (NC) | OFF | CLOSE | Wheel cylinder <==> Reservoir |
Under the normal braking, voltage is not supplied to solenoid valve, inlet valve is opened and outlet valve is closed.
When the brake is depressed, brake fluid is supplied to the wheel cylinder via solenoid valve to activate the brake.
When the brake is released, brake fluid is back to the master cylinder via inlet valve and check valve.
NO RELATED
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.