Inspection Of Individual Part

WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Remove the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS) REMOVAL/INSTALLATION .)
Measure resistance between the terminals of the VSS speed sensor.
- If not as specified, replace the VSS.
- If it is normal, replace the harness.
  Resistance (ATF Temperature: 20°C {68°F})
  
  513-627 Ohms
Install the VSS. (See VEHICLE SPEEDOMETER SENSOR (VSS) REMOVAL/INSTALLATION .)

Fig 1: Measuring Vehicle Speed Sensor Resistance
Courtesy of MAZDA MOTORS CORP.