Using a speedometer tester

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Adjust the tire pressure to the specification.

Using a speedometer tester, verify that the tester reading is as indicated in the table below.

Type A

ALLOWABLE RANGE REFERENCE

Speedometer tester indication (km/h)	Allowable range (km/h)
20	17-23
40	38-43
60	57-63
80	77-83
100	97-103
120	116-124
140	136-144

Type B

ALLOWABLE RANGE REFERENCE

Speedometer tester indication (mph)	Allowable range (mph)
10	9-11
20	18-21
30	28-31
40	38-41
50	48-51
60	58-62
70	68-72
80	78-82

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, TCM, and related wiring harnesses.
  - If the PCM, TCM, and related wiring harnesses are normal, replace the instrument cluster.