Sorry, I don’t know the 116s, just the 126s. might want to post a thread for your problem.

Do you know if the fuel pump is getting power? If the relay for the 116 is the same you can jump the relay and make a connection between the battery and the pump to see if the pump is good. In a 126 (and 124 and 201, I believe) if the pump comes on you know the relay is bad. Sometimes the relay can be resoldered or worse case replaced. If you can jump your pump from the battery through the relay and it works, then the relay needs to be replaced and it would otherwise have power.

Good luck.