Here is the instruction show you guide on how to solve Fendt MT1149 tractor circuit on the DEF suction line heater control circuit.
Preparations:
Code SA 00 SPN 4340 FMI 03
Short circuit on the DEF suction line heater control circuit.
Diagnosis and solution
Clear the error log.
Restart the engine module.
If the fault code shows again during the next driving cycle, check the following.
Check the DEF suction line heater relay harness. Make sure the connections are good and the contacts are clean.
Replace the DEF suction line heater relay. If the system is correct and the fault code is not active, the original DEF suction line heater relay is bad.
Code SA 00 SPN 4340 FMI 04
Short circuit on the DEF suction line heater control circuit.
Diagnosis and solution
Clear the error log.
Restart the engine module.
If the fault code shows again during the next driving cycle, check the following.
Check the DEF suction line heater relay harness. Make sure the connections are good and the contacts are clean.
Replace the DEF suction line heater relay. If the system is correct and the fault code is not active, the original DEF suction line heater relay is bad.
