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.
Relay Box (Motor Relay Harness Test)
1991 Mazda MX-6 GT, StandardSECTION Relay Box (Motor Relay Harness Test)
- Check fail-safe relay before proceeding. See RELAY BOX (FAIL-SAFE RELAY RESISTANCE TEST). If fail-safe relay is okay, turn ignition switch to OFF position. Disconnect ABS control unit 18-pin connector. Turn ignition switch to ON position. Connect ABS control unit 18-pin connector terminals 2J (Black/Blue wire) and 2H (Blue/Black wire) to ground.CAUTION: When performing step 2), DO NOT allow hydraulic motor to operate for longer than 2 seconds.
- Ensure motor relay in relay box clicks. If motor relay does not click, check fail-safe relay and wiring harness between fail-safe relay and ABS control unit. Also ensure hydraulic motor does not operate. If hydraulic motor operates, check fail-safe relay, fuse and wiring harness between fail-safe relay and hydraulic motor.
RENDER: 1.0x
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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.