Operation CHARM
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Porsche
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1989
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928 S4 V8-4957cc 5.0L
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Repair and Diagnosis
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Steering and Suspension
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Relays and Modules - Steering and Suspension
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Relays and Modules - Wheels and Tires
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Tire Pressure Module
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Diagrams
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Electrical Diagrams
Electrical Diagrams
�[.Anti-Lock Brakes, Tire Pressure Control, Trailer Coupling: