Cooling system is not functioning or is weak

1. Cooling system is not functioning or is weak diagnostics

1. A/C compressor inspection

1) Inspect the operation of the magnetic clutch.

  • Inspect the magnetic clutch surface, and if a malfunction is found, clean or replace.
  • Adjust the clearance between the magnetic clutch and the drive plate.

2) Inspect the operation and condition of the compressor.

  • If an abnormal condition is found, adjust the drive belt to the specified tension, or replace.
  • If compressor oil is leaking from the shaft seal or shell, replace the compressor.
  • If the compressor has seized, replace the compressor.

2. Refrigerant inspection

1) Inspect the refrigerant level and for leakage.

  • If there is insufficient coolant, leakage from the A/C system and refrigerant line, re-tighten or repair.

3. Components inspection

1) Inspect the condenser.

  • Clean, if insufficient heat dissipation from the condenser caused by fouling is found.

2) Inspect the operation of the radiator fan and condenser fan.

  • If the radiator fan and condenser fan do not operate, repair or replace.

3) If the radiator fan and condenser fan do not operate, repair or replace.

  • Repair the link unit if a malfunction is found.

4) Inspect the expansion valve.

  • Replace the expansion valve if a malfunction is found.

5) Inspect the evaporator temperature sensor.

  • Replace the evaporator temperature sensor if a malfunction is found.