Functional diagram of the fuel injection system "L-Jetronic":
19 - fuse no. 6; 20 — ignition coil; 24 — starter; 30 — starter relay; 71 - fuel pump; 90 — relay block; 91 - additional resistors; 97 — injectors; 98 - temperature sensor; 99 — main connection point with the "mass" (front manifold mounting eye); 100 — electronic control unit connector; 101 — cold engine start relay; 102 - Throttle switch; 103 - Thermal time relay; 104 - Air flow meter; 105 — starting nozzle.