Operation CHARM
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Jeep Truck
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2008
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Grand Cherokee SRT-8 V8-6.1L
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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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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Description and Operation
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Powertrain Control Module - Description
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5 Volt Supplies
5 Volt Supplies
5 VOLT SUPPLIES
Two different Powertrain Control Module (PCM) five volt supply circuits are used; primary and secondary.