?€¢ A/C low pressure switch signal circuit is grounded.
?€¢ A/C refrigerant pressure sensor parameter is less than 2413 kPa (350 psi).
?€¢ A/C compressor temperature switch contacts are closed.
?€¢ PCM receives an A/C request from the HVAC control module.
?€¢ Engine coolant temperature (ECT) is less than 123?°C (253?°F).
This all happens if the PCM sees the right voltage from low & high pressure switches . Plus the fact that you say the compressor comes on when cold, then shuts off 5 min. down the road . Just off the top of my head I'd say you have a pressure switch problem. Possible A/C Refrigerant Pressure Sensor The A/C refrigerant pressure sensor is a 3-wire piezoelectric pressure transducer. A 5-volt reference, low reference, and signal circuits enable the sensor to operate. The A/C pressure signal can be between 0-5 volts. When the A/C refrigerant pressure is low, the signal value is near 0 volts. When the A/C refrigerant pressure is high, the signal value is near 5 volts. The PCM converts the voltage signal to a pressure value. The A/C refrigerant pressure sensor protects the A/C system from operating when an excessively high pressure condition exists. The powertrain control module (PCM) disables the compressor clutch if the A/C pressure is more than 2413 kPa (350 psi). The clutch will be enabled after the pressure decreases to less than 1578 kPa (229 psi). I would check it myself by finding the A/C compressor clutch relay in the under hood fuse / relay box an take a jumper wire an jump pin 87 & 30 sockets , where the relay plugs into the fuse box . If the clutch engages that part is good an there is a control problem ,not the compressor . If you pull the relay out of the fuse box an look on the bottom you should see four set of numbers , 87- 30 & 85 -86 .May have a fifth one 87a , don't worry about that one . There also be a diagram on the side of the relay . You can find videos on you tube testing relays . I would have it checked at another place too , I would
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