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Home >> Mazda >> 2007 >> 3 Mazdaspeed, 2.3 L >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrumentation/Driver Info >> Instrument Cluster Input/Output Check Mode >> Check Code Inspection >> Check code 12
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Check code 12

CHECK CODE 12 CHART

Check code 12 Speedometer display signal
INSPECTION CONDITION DISPLAY ACTION
After selecting check code 12, wait for approx. 2 s.  OO The speedometer needle moves full scale then returns to approx. 60 km/h.  The speedometer is normal.
Except above Replace the instrument cluster.
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