Description of operation

DESCRIPTION OF OPERATION

Turning the key of ignition switch H1 to the end position (IGN) the electromagnetic windings(pin 50) of starter motor A20 are powered.

This supply comes from the battery through the maxifuse IGN line of B5.

Furthermore, pin 30 of A20, the actual motor, is supplied with a voltage coming directly from the battery A1.

The direct current generated by alternator A10 (pin B+) is sent to the batteryA1, passing through starter motor A20. When the alternator does not rotate, and therefore does not recharge the battery, an earth signal is sent by pin D+ to cluster E50, pin 6 of connector A.

Cluster E50 is powered from ignition switch (INT) to pin 5 of connector A by the line protected by fuse F22 of junction unit B1: when this signal arrives,the "generator"warning light switches on. With the engine running this signal becomes 12 V and the warning light switches off.

COMPONENTS