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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Instrumentation/Driver Info) >> Instrument Cluster Inspection (Us) >> Speedometer Inspection >> Using a speedometer tester

Using a speedometer tester

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • When only the front or the rear wheels are driven using a speedometer tester, the DSC HU/CM may determine that the vehicle speed signal is in error and the engine cannot be stopped by the normal operation. If the engine cannot be stopped, perform an emergency engine stop operation. (See SERVICE CAUTIONS (US) .)
  1. Adjust the tire pressure to the specification. (See WHEEL AND TIRE SPECIFICATION (US) .)
  2. Using a speedometer tester, verify that the values are as indicated in the table.

    TFT POINTER 

    RANGE SPECIFICATION

    Speedometer tester indication (km/h) Allowable range (km/h)
    20 19.10-21.30
    40 38.70-42.10
    60 58.30-62.90
    80 77.90-83.70
    100 97.50-104.50
    120 117.10-125.30
    140 136.70-146.10
    160 156.30-166.90
    180 175.90-187.70
    200 195.50-208.50
    220 215.10-229.30
    240 234.70-250.10
    10 9.49-10.71
    20 19.29-21.11
    30 29.09-31.51
    40 38.89-41.91
    50 48.69-52.31
    60 58.49-62.71
    70 68.29-73.11
    80 78.09-83.51
    90 87.89-93.91
    100 97.69-104.31
    110 107.49-114.71
    120 117.29-125.11
    130 127.09-135.51
    140 136.89-145.91
    150 149.69-156.31

    TFT DIGITAL 

    RANGE SPECIFICATION

    Speedometer tester indication (km/h) Allowable range (km/h)
    20 18.60-21.80
    40 38.20-42.60
    60 57.80-63.40
    80 77.40-84.20
    100 97.00-105.00
    120 116.60-125.80
    140 136.20-146.60
    160 155.80-167.40
    180 175.40-188.20
    200 195.00-209.00
    220 214.60-229.80
    240 234.20-250.60
    10 8.99-11.21
    20 18.79-21.61
    30 28.59-32.01
    40 38.39-42.41
    50 48.19-52.81
    60 57.99-63.21
    70 67.79-73.61
    80 77.59-84.01
    90 87.39-94.41
    100 97.19-104.81
    110 106.99-115.21
    120 116.79-125.61
    130 126.59-136.01
    140 136.39-146.41
    150 146.19-156.81
    • If not as indicated in the table, perform the DTC inspection for the PCM and DSC HU/CM, and inspect the related wiring harnesses. (See DTC INSPECTION .)
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