Element inspection

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Verify using an oscilloscope that the wave pattern for the VSS signal that is input to TCM terminal 2K is the same as the reference wave pattern.
- If the actual pattern of the VSS signal is not the same as the reference pattern, inspect and repair the following items:
  
  Fig 1: Vehicle Speed Sensor Wave Pattern & Malfunction Cause
  Courtesy of MAZDA MOTORS CORP.
- Connect terminals: 2K (+) and 2M (-)
- Equipment setting: 5V/DIV (Y): 2.5 ms/DIV (X)
- Measuring conditions: M range, 1st gear at 20 km/h {12 mph}
Fig 2: Reference Wave Pattern - VSS
Courtesy of MAZDA MOTORS CORP.
Verify the wave pattern of the VSS signal again, and if the malfunction is not resolved, replace the VSS.

Fig 3: Identifying Vehicle Speed Sensor Connector Terminals
Courtesy of MAZDA MOTORS CORP.