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.
2007 Mazda Mazdaspeed3 L4-2.3L TurboFACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
PCM REM0VAL/INSTALLATI0N[L3 WITH TC]
NOTE: For PCM replacement, set up the M-MDS and perform the PCM configuration. (See PCM CONFIGURATION - WITH TC].)
1. Remove the battery cover.
2. Disconnect the negative battery cable.
3. Disconnect the PCM connector.
4. When replacing the PCM on the vehicles, perform the following.
- PCM parameter reset (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.)
5. Install in the reverse order of removal.
NOTE: For PCM replacement, set up the M-MDS and perform the PCM configuration. (See PCM CONFIGURATION - WITH TC].)
1. Remove the battery cover.
2. Disconnect the negative battery cable.
3. Disconnect the PCM connector.
4. When replacing the PCM on the vehicles, perform the following.
- PCM parameter reset (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING.)
5. Install in the reverse order of removal.
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.