2022 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE

Verify Fuse Block Replacement

  1. Temporarily connect the negative battery terminal to verify that the related wiring harness is not heated.
  2. Switch the ignition ON (engine off).
  3. Verify that the fuse is not blown and the related wiring harness is not heated.
  4. Inspect for DTCs. (See DTC INSPECTION .)
    • If a DTC is displayed, repair the malfunctioning location according to the applicable DTC troubleshooting.
    • After completion of repairs, clear all DTCs stored in the module. (See CLEARING DTC .)
  5. If there is no malfunction in Step 1, 3, and 4, start the engine and maintain the idle status.
  6. Operate all the switches of the interior/exterior lights of the vehicle and verify that all the lights illuminate/flash.
  7. Operate the audio, climate control, wiper switch, and selector lever (ATX) and verify that they operate correctly.
  8. Shift the selector lever to the P position, race the engine at approx. 3, 000 rpm from engine idling, and verify that there is no malfunction. (ATX)
  9. Perform a road test and verify that low speed, acceleration, shift-up, and shift-down conditions are normal. (ATX)
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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