What was found
(CAN) WIRING AT CROSS-OVER DISCONNECT CONNECTOR 9811-P159 FOUND INCORRECTLY TERMINATED DURING MAINTENANCE TASK 7320/02. WIRE 7611-10036C20 FOUND TERMINATED AT PIN T OF CONNECTOR AND WIRE 7611-20036B20 FOUND TERMINATED AT PIN U OF SAME CONNECTOR. THIS EFFECTIVELY TIED THE LEFT AND RIGHT ESSENTIAL BUSSES TOGETHER THROUGH THE 2.5 AMP BREAKER FOR ECU 1 AND ECU 2. THE BACKUP POWER FROM THE CROSS-SIDE ESSENTIAL BUS DID NOT EXIST.