The brown relay could cause some of those faults, but not the TPS or injector faults afaik.
Is the TPS even plugged in? It won't stop it starting but I'd be surprised if both circuits for it broke together, which is partly why I'm guessing at a wiring fault.
Is the TPS even plugged in? It won't stop it starting but I'd be surprised if both circuits for it broke together, which is partly why I'm guessing at a wiring fault.