External Control Valve Compressor Inspection (GDS)

Compressor type: Fixed type compressor, External control valve, Internal control valve.

In cases of fixed type and internal control valve, it is possible to inspect compressor's operation with clutch noise.

When it comes to External control valve, however, it cannot be checked in this way bacause it doesn't have a clutch.

So, ECV should be inspected with GDS as below.

1. Connect GDS to the vehicle and select 'Aircon Compressor Test (ECV type)'

   [ECV1] 

   Fig 1: Display - Aircon Compressor Test Screen (ECV Type)

   Courtesy of KIA MOTORS AMERICA, INC.
2. Make the vehicle ready as the GDS instruction on the monitor. (Turn off A/C 'switch' only)

   [ECV2] 

   Fig 2: Display - Test Preparation Screen (ECV2)

   Courtesy of KIA MOTORS AMERICA, INC.

   [ECV3] 

   Fig 3: Display - Test Preparation Screen (ECV3)

   Courtesy of KIA MOTORS AMERICA, INC.
3. Check if other DTC codes are found before inspect ECV compressor. If so, solve that problems first. If not, press 'OK' button to continue.

   Information 

   Do not continue inspection if these DTC codes are found: B1241, B1242, B1672, B1685, B1686, B1687

   [ECV4] 

   Fig 4: Display - Test Conditions Screen (ECV4)

   Courtesy of KIA MOTORS AMERICA, INC.
4. Start inspection

   [ECV5] 

   Fig 5: Display - ECV Performance Test Screen (ECV5)

   Courtesy of KIA MOTORS AMERICA, INC.

   [ECV6] 

   Fig 6: Display - ECV Performance Test Screen (ECV6)

   Courtesy of KIA MOTORS AMERICA, INC.
   CAUTION: Check if condenser fan is operating when condition is changed to 'ECV running'
   CAUTION: Relife valve will be operated if a condenser fan doesn't work because of overpressure in the compressor. It helps the airconditiong system to relieve by releasing refrigerant and oil. (Closed if relieved)
   * Refill refrigerant and oil after operation of Relife valve
   * Noise occurred when Relife vlave is in operation
5. Check the result of inspection.

   [ECV7] 

   Fig 7: Display - ECV Performance Test Screen (ECV7)

   Courtesy of KIA MOTORS AMERICA, INC.

   [ECV8] 

   Fig 8: Display - ECV Performance Test Screen (ECV8)

   Courtesy of KIA MOTORS AMERICA, INC.
6. If the result shows "Check", click "Check" and follow the instruction.
   Fig 9: Display - Aircon Compressor Test Screen (Connector And Refrigerant)

   Courtesy of KIA MOTORS AMERICA, INC.
7. Inspect ECV again from the first step.