JCB U190B: Loss of Communication with GSM Module

The system has detected a loss of communication with the GSM Module. This fault indicates that the connection between the system and the GSM Module is not functioning properly.

1. 1

   The connection between the system and the GSM Module

2. 2

   The power supply to the GSM Module

3. 3

   The integrity of the communication线路 between the system and the GSM Module

1. 1

   Verify the connection

   Check that the connection between the system and the GSM Module is secure and properly seated.

2. 2

   Inspect the power supply

   Ensure that the GSM Module is receiving the correct power supply as specified in the service manual.

3. 3

   Test the communication线路

   Use a multimeter or diagnostic tool to test the integrity of the communication线路 between the system and the GSM Module.