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Jaguar
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2003
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XJ8 Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Trouble Code Identification
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DTC P1637: Controller Area Network Abs/TCCM Token Message Missing
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System Default Action
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System Default Action
When fault is set, ECM inhibits cruise control and idle speed control quality deteriorates.