Operation CHARM
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Jeep Truck
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1996
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Grand Cherokee 4WD L6-242 4.0L VIN S MFI
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Repair and Diagnosis
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Starting and Charging
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Charging System
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Testing and Inspection
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Component Tests and General Diagnostics
Component Tests and General Diagnostics
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Circuit A21 passes through the junction block before reaching fuse 18 in the
PDC
.
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The ASD relay supplies battery voltage for the fuel injectors, ignition coil, and the heated oxygen sensors.