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Coil Resistance Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  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 chart 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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