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 MANUALSMAZDA1988626 LX, 4D SEDAN, 2.2, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMEGI CONTROL SYSTEM
1988 Mazda 626 LX, 4D Sedan, 2.2, Automatic
EGI Control System
1988 Mazda 626 LX, 4D Sedan, 2.2, AutomaticSECTION EGI Control System
- Description
- Operation
- Inputs
- Air Conditioning Switch
- Airflow Meter (Inlet Air Temperature)
- Airflow Meter (Vc)
- Airflow Meter (Vs)
- Atmospheric Pressure Sensor
- Brake Light Switch
- Coolant Temperature Sensor
- Coolant Temperature Switch
- Electrical Load Control
- Idle Switch
- Ignition Coil
- Ignition Switch
- Inhibitor Switch (A/T)
- Knock Sensor
- Main Relay
- Neutral/Clutch Switch (M/T)
- Oxygen (O2) Sensor
- Power Steering Switch
- Speed Sensor
- Throttle Position Sensor (TPS)
- Outputs
- Inputs
- Trouble Shooting
- Engine Conditions
- Hard Start or No Start (Cranks Okay)
- Engine Stalls Cold
- Engine Stalls Warm
- Rough Idle Cold
- Rough Idle Warm
- High Idle Speed
- Poor Acceleration, Hesitation or Lack of Power
- Runs Rough on Deceleration
- High Fuel Consumption
- Engine Stalls or Rough After Hot Start
- Excessive Oil Consumption
- Knocking (Turbo Only)
- Abnormal Noise or Vibration
- Fails Emission Test
- Engine Conditions
- Diagnosis & Testing
- With Self-Diagnostic Checker
- Without Self-Diagnostic Checker
- Non-Turbo Trouble Codes
- Turbo Trouble Codes
- Ecu Voltage Testing
- Deceleration Control System
- Component Testing
- Airflow Meter
- Atmospheric Pressure Sensor
- Brake Light Switch
- By-Pass Air Control (BAC) Valve
- Circuit Opening Relay
- Clutch Switch (M/T)
- Coolant Temperature Sensor
- Coolant Temperature Switch
- EGR Position Sensor (Turbo Only)
- EGR Solenoid (Non-Turbo)
- EGR Solenoid (Turbo)
- Electrical Load Control Unit
- Idle Switch
- Inhibitor Switch (A/T)
- Knock Control System (Turbo Only)
- Main Relay
- Neutral Switch (M/T)
- Power Steering Switch
- Pressure Regulator Control Solenoid
- Purge Solenoid
- Wastegate Solenoid (Turbo Only)
- 5th Gear Switch (M/T)
- Wiring Diagrams
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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.