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.

2002 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

Back-Up Current

CAUTION: Operating electrical loads while measuring the back-up current can damage the circuit tester.

Verify that the ignition switch is off and that the ignition key has been removed.
Disconnect the negative battery cable.
Measure the back-up current between the negative battery terminal and the negative battery cable.
- If the current exceeds 20 mA, remove the fuse in the main fuse block and the fuse block one by one while measuring the back-up current. See Figure and Figure .
- Inspect and repair harnesses and connectors of the fuse at which the current reduces.

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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.