OBD fault code P0200

[Gadgetman]

The Haynes book only lists the Sagem SL96.

There the injectors are controlled from pins 1 and 2 on the ECU.
Common is on pin 4 on the main relay, which you'll fin as a black lump, mounted on the wall in front of the fuse box in the engine compartment.

I don't think the washers are close enough to leak onto the injectors in this engine.

If you have access to LEXIA3, and a mchanic's stethoscope, you could just have it 'exercise' the injectors while you listen to them.
(Actually, you can hear them rattling if there's no other noise nearby, anyway)