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.
2003 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
Removal & Installation (B2300, B3000 & B4000)
- Disconnect the negative battery cable.
- Disconnect the PCM harness connector. See Fig 1.
- Remove the 2 nuts and PCM cover. See Fig 2.
- Remove PCM.
- To install, reverse removal procedure. See TORQUE SPECIFICATIONS .NOTE: PCM must be reprogrammed after installation. See REPLACEMENT POWERTRAIN CONTROL MODULE VID BLOCK & AS BUILT DATA under POWERTRAIN CONTROL MODULE (B2300, B3000 & B4000) in PROGRAMMING.
Factory Service Tools
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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.
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