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 MANUALSMAZDA1995MX-3 L4-1598CC 1.6L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSMAIN RELAY (COMPUTER/FUEL SYSTEM)TESTING AND INSPECTION
1995 Mazda MX-3 L4-1598cc 1.6L DOHC
Main Relay (Computer/Fuel System): Testing and Inspection
1995 Mazda MX-3 L4-1598cc 1.6L DOHCSECTION Testing and Inspection
INSPECTION
1. Verify that the main relay clicks when turning the ignition switch OFF/ ON.
2. Apply battery positive voltage to terminal A and ground terminal B of the main relay.
3. Use an ohmmeter to check continuity of the terminals as shown.
4. If not as specified, replace the main relay.
1. Verify that the main relay clicks when turning the ignition switch OFF/ ON.
2. Apply battery positive voltage to terminal A and ground terminal B of the main relay.
View: Relay Test Connections And Specifications:
3. Use an ohmmeter to check continuity of the terminals as shown.
4. If not as specified, replace the main relay.
RENDER: 1.0x
NO RELATED
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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.