MX-5 Miata L4-2.0L (2008)
3. Measure voltage at VSS terminal B.
Vehicle speed sensor (VSS) voltage 4.5 - 5.5 V
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If voltage is normal, go to Open Circuit Inspection and Short Circuit Inspection.
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If there is any malfunction, repair wiring harness between VSS and PCM.
Open Circuit Inspection
1. Inspect the following circuit for open.
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Power circuit (VSS terminal A to main relay terminal D)
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Ground circuit (VSS terminal C to GND)
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If an open circuit or short circuit is found, repair the malfunctioning wiring harness.
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If there are no open or short circuits, perform the sensor rotor inspection.
Short Circuit Inspection
1. Inspect the following circuit for short circuit.
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Power circuit (VSS terminal A to main relay terminal D)
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If an open circuit or short circuit is found, repair the malfunctioning wiring harness.
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If there are no open or short circuits, perform the sensor rotor inspection.
Sensor Rotor Inspection
1. Remove the VSS.
2. Shift the shift lever to neutral position.
3. Inspect sensor rotor surface via VSS installation hole while rotating a rear tire manually.
1. Is the sensor rotor free of damage and cracks?
2. Is the sensor rotor free of any metallic shavings or particles?
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If the sensor rotor is normal, replace the VSS.
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If there is any malfunction, clean or replace the sensor rotor.
Vehicle Speed Sensor (VSS) Inspection [SJ6A-EL]
VEHICLE SPEED SENSOR (VSS) INSPECTION [SJ6A-EL]
Caution: Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not
enter the connector when disconnecting it.
1. Remove the battery cover.
2. Disconnect the negative battery cable.
3. Remove the tunnel member component.
4. Remove the middle pipe.
