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.
1998 Mazda B2500 SX, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes - Testing: Self-Diagnostics
NOTE:
For identification of terminals and wire colors reference in the following testing, see appropriate wiring diagram in SYSTEM WIRING DIAGRAMS
B2500, SYSTEM WIRING DIAGRAMS
B3000 or SYSTEM WIRING DIAGRAMS
B4000 article. For connector terminal identification, see CONNECTOR IDENTIFICATION in TESTS W/CODES - INTRODUCTION
article.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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