2001 Vito 108CDI Left indicators not working

As it says above, I have a 2001 Vito 108CDI (manual, RHD). The left hand indicators stopped working a couple of days ago. I have it booked into an auto electrician, but I'm hoping to solve the problem myself. I've found some info on here, but it points to a fusebox in the passenger side footwell that doesn't seem to exist in my model. I've visually checked all the other fuses I can find, in the fuseboxes under the steering column and under the passenger seat, but all appear OK. Could it possibly be a relay that's causing the issue?