What was found
DURING TAKEOFF ROLL AT ABOUT 40 KNOTS (IAS), RECEIVED A BLEED NR 1 HOT CAUTION AND A NR 2 BLEED HOT CAUTION MESSAGE. ABORTED TAKEOFF AND RETURNED TO THE GATE. CHECKED ECS FAULTS IN CDS AND FOUND NO PRESENT FAULTS. MOST RECENT FAULT IN HISTORY WAS LEG 003, 7004 L BLD OVR PR AND 7004 R BLD OVR PR. REPLACED LT NACELLE SHUTOFF VALVE IAW FIM TASK 36-10-00-810-801. PERFORMED WIRING CHECKS OF FIM TASK#'S 36-10-00-810-854 AND 36-10-00-810-865. WIRING CHECKS GOOD. REPLACED LT AND RT WING OVERPRESSURE SWITCHES IAW MM TASK#'S 36-11-36-000-801 AND 36-11-36-400-801 IAW FIM TASKS. BLEED AIR SYS OPS TEST GOOD IAW MM TASK# 36-11-00-710-802. ALL INDICATIONS NORMAL DURING TEST. NO NEW ECS FAULTS IN CDS AFTER TEST. RETURNED TO SERVICE.