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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 >> Coil Resistance Test

Coil Resistance Test

  1. Disconnect and isolate the negative battery cable.
  2. Disconnect the wire harness connector from the A/C clutch field coil connector.
  3. Use an ohm meter and Back Probe Tool 6801 and measure the resistance of the clutch field coil at the field coil connector terminals.
  4. See A/C CLUTCH COIL SPECIFICATIONS  for the acceptable A/C clutch coil resistance. Specifications apply for a work area temperature of 21° C (70° F).
    1. If the A/C clutch coil reading is below specifications, the coil is shorted and must be replaced.
    2. If the A/C clutch coil reading is above specifications, the coil is open and must be replaced.
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