Operation CHARM
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Mercury
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1993
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Grand Marquis V8-281 4.6L SOHC
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Repair and Diagnosis
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Testing and Inspection
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Pinpoint Tests
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AC - EEC-IV No Start (Electronic Ignition-High Data Rate)
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AC2 - Check For VREF At Throttle Position Sensor
AC2 - Check For VREF At Throttle Position Sensor
Pinpoint Test AC2: