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2021
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Cherokee High Altitude, Full Time T/Case Control
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P2173 To U0299
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DTC Troubleshooting
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U012D-Lost Communication With Alternator Control Module
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Set Condition
Set Condition
The Powertrain Control Module (PCM) has lost communication with the Smart Alternator over the LIN Bus.