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.
Engine Control Module: Service and Repair
1998 Mazda 626 LX L4-2.0L DOHCSECTION Service and Repair
CAUTION: PCM is sensitive to static electrical charges. If exposed to these charges, damage may result. If service of PCM is required, use the following safeguards to avoid damage to components.
1. Leave the PCM in their original packaging until ready to install in vehicles.
2. Avoid touching PCM connector pins.
3. Avoid laying modules on nonconductive surfaces.
1. Disconnect the negative battery cable.
2. Remove the rear console.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
1. Leave the PCM in their original packaging until ready to install in vehicles.
2. Avoid touching PCM connector pins.
3. Avoid laying modules on nonconductive surfaces.
1. Disconnect the negative battery cable.
2. Remove the rear console.
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.