Plug connections at the rear in the engine compartment: 1 - lambda probe heating (right probe); 2 - to the ignition coil (supply wiring); 3 — for the lambda probe signal (right probe; the plug connection is located at the back of the holder); 4 - for detonation ignition sensor I; 5 — for the engine shaft speed sensor; 6 — for the ignition timing sensor.
Plug connections at the rear left in the engine compartment: 1 - for the lambda probe signal (left lambda probe); 2 - lambda probe heating (left probe); 3 - knock sensor II.
Injection nozzles (white arrows) can only be removed together with the fuel distributor. To do this, loosen the fuel distributor mounting bolts (black arrows).