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 MANUALSMAZDA1991NAVAJO LX, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMDIAGNOSIS & TESTINGCOMPONENT TESTINGPRESSURE DIFFERENTIAL SWITCH (B2200, B2600 & MPV)
1991 Mazda Navajo LX, Automatic
Pressure Differential Switch (B2200, B2600 & MPV)
1991 Mazda Navajo LX, AutomaticSECTION Pressure Differential Switch (B2200, B2600 & MPV)
- Connect one end of a vinyl tube to front brake bleed screw, and place other end in a receptacle half-filled with clean brake fluid. Loosen bleed screw. Turn ignition switch to ON position, and ensure ANTI-LOCK warning light flashes then goes off.
- Depress brake pedal several times, and ensure ANTI-LOCK warning light illuminates, because pressure differential switch is on.
NOTE:
One person should hold vinyl tube to prevent tube from being disconnected when brake pedal is depressed.
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.