Mike's Workshop Manuals
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Jeep
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2005
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Grand Cherokee Laredo, 3.7 K, AWD
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Repair and Diagnosis
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Engine Performance
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System
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DTCS P0579 To P0633
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Diagnosis And Testing
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P0580-Speed Control Switch 1 Circuit Low
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Set Conditions
Set Conditions
Set Condition:
Speed control switch input No.1 is below the minimum acceptable voltage at the PCM. One trip fault.