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.
1986 Mazda 626 BaseFACTORY OEM SERVICE PROCEDURE
EFI Control System
- Description
- Operation
- Testing
- Test Equipment & Hook-Up
- Reading Trouble Codes
- Diagnostic Procedure
- Airflow Meter (AFM)
- Atmospheric Pressure Sensor
- Brake Switch
- Coolant Temperature Switch
- Coolant THERMO Sensor
- Clutch Switch
- Electronic Control Unit
- Inhibitor Switch
- Intake Air Temperature Sensor
- Main Relay
- Neutral Switch
- No. 1 Cylinder Sensor
- Oxygen Sensor
- Pressure Switch
- Power Steering Switch
- Shift Indicator Light
- Throttle Position Sensor
- 5TH Gear Switch
- Wiring Diagrams
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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