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 MANUALSMAZDA1991626 DX, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESANTI-LOCK BRAKESANTI-LOCK BRAKE SYSTEM - LATEDIAGNOSIS & TESTINGCOMPONENT TESTINGHYDRAULIC UNIT (MOTOR TEST)
1991 Mazda 626 DX, Automatic
Hydraulic Unit (Motor Test)
1991 Mazda 626 DX, AutomaticSECTION Hydraulic Unit (Motor Test)
- Turn ignition switch to OFF position. Disconnect hydraulic unit 2-pin connector. Measure resistance between connector terminals. Resistance should not be more than one ohm.
- If resistance is not as specified, replace hydraulic unit. If resistance is as specified, verify that motor operates when applying 12 volts to connector terminals. Replace hydraulic unit if motor does not operate.
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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.