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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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Pinpoint Tests
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FF - Power Steering Pressure (PSP) Switch
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FF23 - Check PSPS State W/Key On Engine Off Vs. Engine Running
FF23 - Check PSPS State W/Key On Engine Off Vs. Engine Running
Pinpoint Test FF23:
