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Home >> Mazda >> 2006 >> Mazdaspeed6 L4-2.3L Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Vehicle Speed Sensor >> Testing and Inspection >> Vehicle Speed Sensor (VSS)
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Vehicle Speed Sensor (VSS)




Vehicle Speed Sensor

1. Measure the #1 PCM terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch to the ON position and the engine is idling.
- If it is at 0 V or 5 V, intermittent concern exists.
- If not, inspect the following points concerning the PCM connector.
- If there is no problem, inspect for the following:
- Female terminal opening is loose.
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Wiring harness/pin crimp is loose or disconnected.

2. Measure the #2 sensor terminal voltage and confirm that it is at 0 V or 5 V when the ignition switch to the ON position and the engine is idling.
- If it is at 0 V or 5 V, intermittent concern exists.
- If not, inspect the following points concerning the sensor connector:
- If there is no problem, inspect for the following.
- Female terminal opening is loose.
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Wiring harness/pin crimp is loose or disconnected.

3. Confirm that the #3 terminal switch voltage is at 0 V.
- If it is at 0 V, inspect the sensor. If necessary, replace the sensor.
- If necessary, replace the sensor.
- If not, inspect for the following:
- Open circuit in wiring harness
- Female terminal opening is loose.
- Coupler (pin holder) damage
- Pin discoloration (blackness)
- Wiring harness/pin crimp is loose or disconnected.
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