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 MANUALSMAZDA1991626 DX, AUTOMATICREPAIR AND DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
1991 Mazda 626 DX, Automatic
Control Units
1991 Mazda 626 DX, AutomaticSECTION Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| Anti-Lock Brake Control Unit | Under right side of driver's seat. | |
| Central Processing Unit (CPU) | In joint/fuse box. | |
| Cruise Control Unit (Internal View Of Dash) | Under dash, near steering column. See Figure . | |
| Electronic Transaxle Control Unit | ||
| Top View Non-Turbo | Near joint/fuse box. See Figure . | |
| Internal View Of Dash | Near joint/fuse box. See Figure . | |
| Electrical Load Control Unit | ||
| Top View Non-Turbo | Under center of dash, near ECU. See Figure . | |
| Internal View Of Dash | Under center of dash, near ECU. See Figure . | |
| Engine Control Unit (ECU) | ||
| Top View Non-Turbo | Under center of dash. See Figure . | |
| Internal View Of Dash | Under center of dash. See Figure . | |
| Fuel Pump Control Unit | In right rear corner of trunk. See Figure . | |
| Knock Control Unit | ||
| Top View Turbo | On center side of firewall. See Figure . | |
| Side View Of Engine | On center side of firewall. See Figure . | |
| Power Steering Control Unit | Under left side of driver's seat. | |
| 4-Wheel Steering (4WS) Control Unit | Under left side of driver's seat. See Figure . | |
RENDER: 1.0x
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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.