Using A Speedometer Tester
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Adjust the tire air pressure to the specification.
- Using a speedometer tester, verify that the speedometer indication is within the allowable ranges shown below.
- Verify that fluctuation of the speedometer needle is within the allowable range.
- If the speedometer needle does not move or the indication is outside of the allowable range, inspect the PCM, ABS HU/CM (vehicles with ABS), VSS (vehicles without ABS) and related wiring harnesses.
- If the PCM, ABS HU/CM (vehicles with ABS), VSS (vehicles without ABS) and related wiring harnesses are normal, replace the instrument cluster.
- Needle fluctuation allowable range: Within 3.0 km/h
- If the speedometer needle does not move or the indication is outside of the allowable range, inspect the PCM, ABS HU/CM (vehicles with ABS), VSS (vehicles without ABS) and related wiring harnesses.