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.
Code A016 - Enable Relay Coil Circuit Open: Notes
Ignition voltage is supplied through terminal No. A2 of ABS enable relay. EBCM energizes pull-in coil by completing ground circuit at pin No. 22 of EBCM. The magnetic field created will close enable relay contacts to supply battery voltage to Electro-Mechanical Brake (EMB) and EBCM, providing power to motors and solenoids.
This test checks for open in enable relay coil circuit. An open in this circuit will prevent enable relay from being energized and voltage from reaching motors, solenoids and EMB.
- This step determines if EBCM is capable of controlling relay.
- This step checks for voltage at pull-in coil of enable relay.
- This step checks for continuity through pull-in coil of enable relay.
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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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