Repair Procedures: Inspection

1. Check the plated parts of the limiter & hub assembly (A) for color changes, peeling or other damage. If there is damage, replace the assembly.
2. Check the pulley (B) bearing play and drag by rotating the pulley by hand. Replace the pulley with a new one if it is noisy or has excessive play/drag.
   Fig 1: Checking Pulley Bearing Play

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Electronic Control Valve Compressor Inspection (Tester) 

1. Disconnect the ECV connector from the compressor.
2. Measure resistance between terminal "+" and "-" of the ECV connector.

   Resistance Specification (@ 25°C/77°F):  10.1~11.1Ω

   Fig 2: Inspecting Electronic Control Valve Compressor (Tester)

   Courtesy of KIA MOTORS AMERICA, INC.

   Information 

   ECV resistance may be slightly high if the ambient temperature is higher than 25°C/77°F.

   NOTE:

   • Be aware of ECV Bent Pin.
   • Plug/Unplug the connector carefully.

Electronic 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 as it does not have a clutch.

So, ECV should be inspected by GDS in the following procedure:

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

   [ECV1] 

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

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2. Make the vehicle ready as the GDS instruction on the monitor. (Turn off A/C "switch" only)

   [ECV2] 

   Fig 4: Display - ECV2 Test Preparation Screen

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   [ECV3] 

   Fig 5: Display - ECV3 Test Preparation Screen

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3. Check if other DTC codes are found before inspecting ECV compressor. If found, solve these problems first. Otherwise, press "OK" button to continue.

   Information 

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

   [ECV4] 

   Fig 6: Display - ECV4 Test Preparation Screen

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4. Start inspection

   [ECV5] 

   Fig 7: Display - ECV5 Test Preparation Screen

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   [ECV6] 

   Fig 8: Display - ECV6 Test Preparation Screen

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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 9: Display - ECV7 Test Preparation Screen

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   [ECV8] 

   Fig 10: Display - ECV8 Test Preparation Screen

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6. If the result shows "Check", click "Check" and follow the instruction.
   Fig 11: Display - Inspection Procedure For Check Result From Diagnosis Screen

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7. Inspect ECV again from the first step.