Mazdaspeed6 L4-2.3L Turbo (2006)
Vehicle Speed Sensor: Testing and Inspection
Vehicle Speed Sensor (VSS) Inspection
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.
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If it is at 0 V or 5 V, intermittent concern exists.
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If not, inspect the following points concerning the PCM connector.
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If there is no problem, inspect for the following:
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Female terminal opening is loose.
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Coupler (pin holder) damage
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Pin discoloration (blackness)
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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.
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If it is at 0 V or 5 V, intermittent concern exists.
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If not, inspect the following points concerning the sensor connector:
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If there is no problem, inspect for the following.
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Female terminal opening is loose.
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Coupler (pin holder) damage
-
Pin discoloration (blackness)
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Wiring harness/pin crimp is loose or disconnected.
3. Confirm that the #3 terminal switch voltage is at 0 V.
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If it is at 0 V, inspect the sensor. If necessary, replace the sensor.
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If necessary, replace the sensor.
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If not, inspect for the following:
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Open circuit in wiring harness
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Female terminal opening is loose.
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Coupler (pin holder) damage
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Pin discoloration (blackness)
-
Wiring harness/pin crimp is loose or disconnected.
