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.
Pump Motor
Turn ignition switch to OFF position. Disconnect pump motor/hydraulic unit 2-pin connector. Measure resistance between terminals of pump motor/hydraulic unit connector. See Fig 1 . Resistance should be one ohm or less. Also check for continuity between pump motor case and motor terminal of pump motor/hydraulic unit connector. Continuity should not exist. If either test result is not within specification, replace hydraulic unit.
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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.