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Home >> Cadillac >> 1991 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Pcm Code EO12, No Distributor (Tach) Signal >> Failure Conditions:

Failure Conditions:

If PCM does not see distributor reference pulses 4 seconds with crank input to PCM at system voltage, Code EO12 will be set.

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