Anti-Lock Warning Lamp Off

System Relay and Anti-Lock Warning Lamp Relay Energized.

From pin 57 the (CAB) energizes the system relay coil. The current flow in the coil pulls the system relay to the left, current is then provided to pins 47 and 50 of the (CAB) to provide power to the modulator valves. This current also energizes the ANTI-LOCK warning lamp relay coil. The current flow in the coil pulls the ANTI-LOCK warning lamp relay switch to the left. This breaks the ground path to the ANTI-LOCK warning lamp and the lamp is turned off.

The (CAB) by itself, also has the ability to turn on the ANTI-LOCK warning lamp. The (CAB) can turn on the ANTI-LOCK warning lamp by providing a ground at pin 15.