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 because it doesn't have a clutch.

So, ECV should be inspected with GDS below.

1. Connect GDS to the vehicle and select "Air-Con Compressor Test (ECV type)".

   [ECV1] 

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

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2. Make the vehicle ready as the KDS instruction on the monitor. (Turn OFF A/C 'switch' only).
   Fig 2: Screen Display - Air-Con Compressor Test (ECV Type 2)

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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

   Fig 3: Screen Display - Air-Con Compressor Test (ECV Type 3)

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4. Start inspection
   Fig 4: Screen Display - Air-Con Compressor Test (ECV Type 4)

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   Fig 5: Screen Display - Air-Con Compressor Test (ECV Type 5)

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   CAUTION: Check if condenser fan is operating when condition is changed to "ECV running"
   CAUTION: Relief Valve will be operated if the condenser fan does not work because of over pressure in the compressor. The Relief Valve helps the air conditioning system to relieve pressure by releasing refrigerant and oil (closes valve when relived).
   * Refill refrigerant and oil after operation of Relief Valve.
   * Noise is normal when Relief Valve is in operation.
5. Check the result of inspection.

   [ECV7] 

   Fig 6: Screen Display - Air-Con Compressor Test (ECV Type 7)

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   [ECV8] 

   Fig 7: Screen Display - Air-Con Compressor Test (ECV Type 8)

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6. If the result shows "Check", click "Check" and follow the instruction.
   Fig 8: Screen Display - Air-Con Compressor Test (ECV Type)

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7. Inspect ECV again from the first step.