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Home >> Mazda >> 2007 >> 3 s, 4D Hatchback, 2.3 4, Automatic >> Repair and Diagnosis >> Electrical >> Horns >> Instrumentation/Driver Info >> Instrument Cluster Inspection >> Speedometer >> Using a speedometer tester

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.
    SPEEDOMETER TESTER READING

    Speedometer tester indication (km/h) Allowable range (km/h)
    L3 with TC Except L3 with TC
    20 18-22 18-22
    40 38-41 38-41
    60 58-62 58-62
    80 77-82 78-82
    100 97-102 97-102
    120 117-122 117-122
    140 136-143 137-142
    SPEEDOMETER TESTER READING

    Speedometer tester indication (mph) Allowable range (mph)
    L3 with TC Except L3 with TC
    10 8.6-11 8.7-11
    20 19-21 19-21
    30 29-31 29-31
    40 39-41 39-41
    50 49-51 49-51
    60 59-61 59-61
    70 68-72 69-71
    80 78-82 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.