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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISELECTRICALHORNSINFORMATION CENTER [INSTRUMENTATION/DRIVER INFO]INSTRUMENT CLUSTER INSPECTIONSPEEDOMETERUSING A SPEEDOMETER TESTER
2010 Mazda 5 Sport, 2.3 L, Standard

Using a speedometer tester

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Using a speedometer tester
  1. Adjust the tire pressure to the specification.
  2. Using a speedometer tester, verify that the tester reading is as indicated in the table below.
    TESTER INDICATION

    Speedometer tester indication (km/h) Allowable range (km/h)
    20 18-22
    40 38-41
    60 58-62
    80 78-82
    100 97-102
    120 117-122
    140 136-142
    TESTER INDICATION

    Speedometer tester indication (mph) Allowable range (mph)
    10 8.6-11
    20 19-21
    30 29-31
    40 39-41
    50 49-51
    60 59-61
    70 68-72
    80 78-82
  3. Verify that the speedometer reading is within the range indicated in the table.
    • If the speedometer does not move or the indication is not within the allowable range, inspect the PCM and related wiring harnesses.
      • If the PCM and related wiring harnesses are normal, replace the instrument cluster.
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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.