Operation CHARM
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Ford Truck
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1990
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F 150 4WD Pickup V8-302 5.0L
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Repair and Diagnosis
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Powertrain Management
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Testing and Inspection
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Pinpoint Tests
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FD - Brake On/Off (BOO) Switch
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FD10 - FD12
FD10 - FD12
Pinpoint Test FD10 Thru FD12 - Brake On/Off (BOO):
*** UPDATED BY TSB #906B15 03-23-90