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.
Anti-Lock Brake System: Testing: Notes
To prepare for testing, turn ignition switch to the "OFF" position. Remove cover from hydraulic modulator. Remove connector from ECU by depressing lock spring and swinging out connector. Unless otherwise stated in testing procedure, ECU connector is to remain unplugged. Consult wiring diagram while performing tests. Check ECU connector terminals through holes in side of connector using minimum force. Connector terminal numbers are molded into side of connector.
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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.