Fendt 04.1.76 – EDC (Electronic Diesel Control) / Transmission Control Module: S047 - Switch, engine brake

Signal fault, sensor failure, cable break, short circuit, or a communication error between the switch and the control module. When this fault is active, the tractor's safety protocols intervene and the TMS (Tractor Management System) is automatically switched off.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario (COM III)
• Fendt 700 Vario (COM III, SCR)
• Fendt 800 Vario (COM III, S4)
• Fendt 900 Vario (COM III, S4)
• Fendt Favorit 700 and 900 series

1. 1

   Locate the S047 engine brake tappet/foot switch on the cab floor

2. 2

   Inspect the wiring harness and connectors for a cable break or short circuit, paying special attention to separation point/connector X140

3. 3

   Perform a continuity test on the S047 switch to verify if it is mechanically or electrically faulty

4. 4

   Verify the wiring integrity from connector X140 to the EDC control module to rule out a communication error

5. 5

   Connect the FENDIAS or SERDIA diagnostic tool and look for associated KWP/SERDIA codes (such as FC:0034)

1. 1

   Safely park the tractor, turn off the engine, and disconnect the battery to prevent electrical shorts.

2. 2

   Access the cab floor area to reach the S047 engine brake tappet switch.

3. 3

   Disconnect the switch at separation point X140.

4. 4

   If the wiring harness is damaged, repair the broken or shorted wires and re-pin connector X140 as necessary.

5. 5

   If the switch failed the continuity test, remove the mounting hardware securing the S047 switch to the cab floor and install the replacement switch.

6. 6

   Reconnect the X140 connector and restore battery power.

7. 7

   Connect the SERDIA or FENDIAS diagnostic tool to clear the 04.1.76 (and any associated FC:0034) fault codes.

8. 8

   Start the tractor and verify that the TMS (Tractor Management System) can be successfully engaged and is no longer switched off.