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.
1992 Mazda 323 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - System/Component Tests - EFI
- Introduction
- Air Induction Systems
- Computerized Engine Controls
- Engine Sensors & Switches
- A/C Switch
- Air Charge Temperature (Act) Sensor
- Airflow Sensor
- Airflow Meter
- Atmospheric Pressure Sensor
- Barometric Pressure (BP) Sensor
- BRAKELIGHT Switch
- Central Processing Unit (CPU)
- Clutch Switch (M/T)
- Cold Start THERMOSWITCH
- Coolant Temperature Switch
- Coolant THERMOSENSOR
- Crank Angle Sensor
- Engine Coolant Temperature (ECT) Sensor
- EGR Position Sensor
- Heated Exhaust Gas Oxygen (HEGO) Sensor (NAVAJO)
- Idle Switch
- Inertia Switch
- Inhibitor Switch (A/T)
- Intake Air THERMOSENSOR (Dynamic Chamber)
- Knock Sensor
- Mass Airflow (MAF) Sensor
- Neutral Switch
- Oxygen (O2) Sensor
- Oxygen (O2) Sensor Heater
- Power Steering Pressure Switch (PSPS)
- Throttle Position Sensor
- Variable Reluctance (VR) Sensor
- Vehicle Speed Sensor (VSS)
- Relays & Solenoids
- Relays
- Solenoids
- Canister Purge (CANP) Solenoid (Navajo)
- Cold Start Injector Resistance (929)
- EGR Solenoid (MX-3 DOHC, MX-6, 626 & 929)
- Fuel Injectors
- Fuel Injector Resistance
- Pressure Regulator Control Solenoid (Except Navajo)
- Purge Control Solenoid
- Turbocharger Solenoid (MX-6 & 626)
- VICS Solenoid (Protege DOHC & 929)
- VRIS Solenoid (MPV 3.0L & MX-3 DOHC)
- Fuel System
- Idle Control System
- Ignition System
- Emission Systems & Sub-Systems
- Deceleration Control System
- Exhaust Gas RECIRCULATION (EGR) MX-3 DOHC, MX-6, 626 & 929
- System Check (MX-3 DOHC & 929)
- System Check (MX-6 & 626)
- EGR Control Valve
- EGR Modulator Valve (MX-6 & 626 Non-Turbo)
- EGR Position Sensor (MX-3 DOHC)
- EGR Position Sensor (MX-6 & 626)
- EGR Solenoid Valve (MX-3 DOHC, MX-6 Turbo, 626 Turbo & 929)
- EGR Solenoid Valve (MX-6 & 626 Non-Turbo)
- Vacuum Chamber (MX-6 & 626 Turbo)
- Fuel Evaporation (Except NAVAJO)
- Fuel Evaporation (NAVAJO)
- Positive Crankcase Ventilation (PCV)
- Thermostatic Air Cleaner (TAC) NAVAJO
- Miscellaneous Controls
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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