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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating & Air Conditioning (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 coil connector.
  3. Use an ohm meter and Back Probe Tool and measure the resistance of the A/C clutch coil at the coil connector terminals.

    (Special tool #6801, Terminal Probe)

  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). Refer to TECHNICAL SPECIFICATIONS .
    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.