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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Service Information) >> Plumbing >> Compressor, A/C >> Diagnosis and Testing >> A/C Clutch Coil >> Preliminary Checks

Preliminary Checks

  1. If the A/C compressor clutch will not engage, perform the A/C System Performance Test, which is found within the HVAC System Test. Refer to DTC-Based Diagnostics/HVAC - Standard Procedure . If no diagnostic trouble codes (DTCs) are found in the CONTROL, A/C and Heater , go to  2. If any DTCs are found, repair as required.
  2. If the A/C compressor clutch still will not engage, verify the refrigerant charge level. See Heating and Air Conditioning - Diagnosis and Testing . If the refrigerant charge level is OK, go to COIL RESISTANCE TEST  and/or COIL CURRENT DRAW TEST . If the refrigerant charge level is not OK, adjust the refrigerant charge as required.
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