What was found
MULTIPLE BLEED HOT CAUTION LIGHTS ILLUMINATED DURING TAKEOFF ROLL. OCCURED AROUND 90 KTS. ABORTED TAKEOFF AND RETURNED TO GATE FOR MAINTENANCE CONTROL. INTERROGATED CDS IAW AMM TASK 45-00-21-742-801. NO ASSOCIATED FAULT CODES. PERFORMED OPS TEST OF THE BLEED AIR SYS IAW AMM TASK 36-11-00-710-802, OPS TEST FAILING AT STEPS 9, 11, 13, AND 23 A/B. INTERROGATED CDS AFTER PERFORMING OPS TEST, FOUND NO FAULT CODES. C/W OPS TEST OF THE BLEED AIR SYS REF AMM TASK 36-11-00-710-802. ALL STEPS TEST GOOD. NO DEFECTS NOTED. NO ASSOCIATED PRESENT FAULTS FOUND IN CDS.