Operation CHARM
: Car repair manuals for everyone.
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Ford Truck
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1997
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Expedition 4WD V8-5.4L SOHC VIN L
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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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HM - Secondary Air Injection (AIR) System
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Pinpoint Test Schematics
Pinpoint Test Schematics
Electric Secondary Air Injection System
Electric AIR Pump
Mechanical Secondary Air Injection System
NOTE:
Not all applications are equipped with both AIR Bypass or
AIR Diverter solenoids
.