Diagnostic Table
WARNING: This page is about a different variant/trim than selected.
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NOTE: The following table is used to guide diagnosis of the refrigerant system if operating pressures are outside normal limits.
Refer to the chart below.
REFRIGERANT PRESSURE SPECIFICATION
| High (Discharge) Pressure | Low (Suction) Pressure | Component - Causes | ||||
|---|---|---|---|---|---|---|
| High or Clutch Cycling | High | Condenser - inadequate airflow. | ||||
| High | Normal to High | Engine - overheating. | ||||
| Normal to High | Normal | Refrigerant overcharge - air in refrigerant. | ||||
| Normal to Low | Normal to High | A/C suction line - partially restricted or plugged(1). | ||||
| Normal to Low | Low or Clutch Cycling | Low refrigerant charge, A/C suction line - partially restricted or plugged(2) A/C cycling switch - sticking closed (if equipped). | ||||
| Erratic Operation or Compressor Not Running | Evaporator discharge air temperature sensor or A/C pressure transducer - poor connection at A/C clutch connector. A/C electrical circuit erratic - see AIR CONDITIONING for Escape Hybrid, or AIR CONDITIONING for Mariner Hybrid . | |||||
| Normal to Low | High | Compressor - low performance. | ||||
| Additional Possible Cause Components Associated With Inadequate Compressor Operation | ||||||
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| Additional Possible Cause Components Associated With a Damaged Compressor | ||||||
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