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2021
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Cherokee Trailhawk
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Repair and Diagnosis
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Engine Performance
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System
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3.2L - DTCS P054C To P1129
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DTC Troubleshooting
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P0645-A/C Control Circuit/Open
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Set Condition
Set Condition
The Powertrain Control Module (PCM) detects an open or short in the A/C Compressor Clutch Control circuitry.