CLAAS 7580h: Cab Suspension Compressor Inoperative

The cab suspension compressor (Y334) is inoperative. The supply voltage of the compressor is not detected between the 1 (+AVC) and 3 command of the SFA (A102) and between the 2 (command) and 3 (ground) terminals of the connector J489. The voltage should be 12V. The system is unable to manage the cab's position.

1. 1

   The supply voltage between the 1 (+AVC) and 3 command of the SFA (A102)

2. 2

   The supply voltage between the 2 (command) and 3 (ground) terminals of the connector J489

3. 3

   The condition of the cab suspension compressor (Y334)

1. 1

   Check the supply voltage

   Measure the voltage between the 1 (+AVC) and 3 command of the SFA (A102) and between the 2 (command) and 3 (ground) terminals of the connector J489. The voltage must be 12V.

2. 2

   Inspect the cab suspension compressor

   Examine the cab suspension compressor (Y334) for signs of damage or malfunction.

3. 3

   Verify the connection

   Ensure that the connector J489 is properly connected and free from corrosion or damage.