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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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 "Aircon Compressor Test (ECV type)"

   [ECV1] 

   Fig 2: Scantool Display - Vehicle S/W Management (ECV 1)

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

   [ECV2] 

   Fig 3: Scantool Display - Test Preparation (ECV 2)

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   [ECV3] 

   Fig 4: Scantool Display - Test Preparation (ECV 3)

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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

   [ECV4] 

   Fig 5: Scantool Display - Test Condition (ECV 4)

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4. Start inspection

   [ECV5] 

   Fig 6: Scantool Display - ECV Performance Test (ECV 5)

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   [ECV6] 

   Fig 7: Scantool Display - ECV Performance Test (ECV 6)

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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 a condenser fan doesn't work because of overpressure in the compressor. It helps the air-conditioned system to relieve by releasing refrigerant and oil. (Closed if relieved)
   * Refill refrigerant and oil after operation of Relief valve
   * Noise occurred when Relief valve is in operation
5. Check the result of inspection and click "Check Detail" if it's "Check". Follow the instruction and inspect ECV again from the first step.

   [ECV7] 

   Fig 8: Scantool Display - ECV Performance Test (ECV 7)

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   [ECV8] 

   Fig 9: Scantool Display - ECV Performance Test (ECV 8)

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