Test A: No Communication With The Fire Suppression Module

PINPOINT TEST A: NO COMMUNICATION WITH THE FIRE SUPPRESSION MODULE

A1-A2:

A3:

Normal Operation
The voltage is supplied to the fire suppression module (FSM) on circuit 2319 (RD/YE). The ground is supplied to the FSM through the FSM chassis and through circuit 1203 (BK/LB).

Possible Causes
- fuse
- circuit 2319 (RD/YE) open
- circuit 1203 (BK/LB) open
- FSM case ground
- FSM