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.
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HOMESERVICE MANUALSMAZDA1993MX-3 V6-1844CC 1.8L DOHCREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSFAIL-SAFE RELAY - ABS
1993 Mazda MX-3 V6-1844cc 1.8L DOHC
Fail-Safe Relay - ABS
1993 Mazda MX-3 V6-1844cc 1.8L DOHCSECTION Fail-Safe Relay - ABS
When testing fail-safe relay, refer to Fig. 130 for ABS connector terminal identification.
1. Measure resistance between terminals C and D of ABS relay connector; resistance should be 60 - 100 ohms.
2. Check between terminals A and E, continuity should exist, then check between terminals B and E; continuity should not exist.
3. Apply 12 volts to terminals D and C and check between terminals B and E; continuity should exist. Check between terminals A and E; continuity should not exist.
4. If relay operation is not as specified, replace.
Fig. 130 Fail-safe Relay Terminal Identification:
1. Measure resistance between terminals C and D of ABS relay connector; resistance should be 60 - 100 ohms.
2. Check between terminals A and E, continuity should exist, then check between terminals B and E; continuity should not exist.
3. Apply 12 volts to terminals D and C and check between terminals B and E; continuity should exist. Check between terminals A and E; continuity should not exist.
4. If relay operation is not as specified, replace.
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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.