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 MANUALSMAZDA1998626 LX L4-2.0L DOHCREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSTESTING AND INSPECTIONINITIAL INSPECTION AND DIAGNOSTIC OVERVIEW
1998 Mazda 626 LX L4-2.0L DOHC
Initial Inspection and Diagnostic Overview
1998 Mazda 626 LX L4-2.0L DOHCSECTION Initial Inspection and Diagnostic Overview
Terminal Voltage List (Reference)
1. Remove the driver's side side panel.
2. Remove the lower panel.
3. Measure the voltage at the immobilizer unit terminals as indicated.
4. Disconnect the immobilizer unit connector before checking for continuity at terminal C.
5. If not specified, inspect the parts listed under "Inspection area" and the related wiring harnesses.
6. If the parts and wiring harnesses are okay but the system still does not work properly, replace the immobilizer unit.
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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.