Protege 1999-2000

Vehicle Speed Sensor

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Operation



Specific to:

Mazda Protege 1999-2003

The Vehicle Speed Sensor (VSS) is a magnetic pick-up that sends a signal to the Powertrain Control Module (PCM). The sensor measures the rotation of the transmission and the PCM determines the corresponding vehicle speed.

Removal & Installation



Specific to:

Mazda Protege 1999-2003

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the battery component.
  4.  
  5. Remove the air cleaner component.
  6.  
  7. Disconnect the VSS connector.
  8.  
  9. Remove the VSS.
  10.  

To install:

  1. Apply ATF to a new O-ring and install it on a VSS.
  2.  
  3. Install the VSS.
  4.  
  5. Connect the VSS connector.
  6.  
  7. Install the battery component.
  8.  
  9. Install the air cleaner component.
  10.  
  11. Connect the negative battery cable.

    Click image to see an enlarged view

    Fig.

  12.  

Testing



Specific to:

Mazda Protege 1999-2003

  1. Remove the VSS
  2.  
  3. Using a low voltage voltmeter, measure the voltage between two terminals of the VSS while rotating the driven gear by hand. Voltmeter needle should move below 5 volts.
  4.  
  5. If the voltmeter needle moves, check wiring and/or connectors and repair/replace as necessary.
  6.  
  7. If the voltmeter needle does not move, replace the VSS.

    Click image to see an enlarged view

    Fig.

  8.  

 
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