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1993
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Seville STS
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Repair and Diagnosis
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Engine Performance
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Engine Controls - Tests W/Codes - Pcm
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Pcm Code Charts
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Pcm Code P023 - Ignition Control Circuit Problem
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Test Conditions (Run)
Test Conditions (Run)
By-pass line high (5 volts) and at least 2 reference pulses have been received by PCM.