What was found
RIGHT COWL ANTI-ICE LIGHT (AMBER) ON. GROUNDED - YES. RAN NR 2 ENG AND OPS CHK CTAI, COWL ANTI-ICE (AMBER) LIGHT DID NOT GO OUT. R & R NR 2 COWL ANTI-ICE VALVE, REF B737-900 AMM 30-21-11. ACCOMPLISHED BONDING CHECK OF COWL TAI RT, REF AMM 30-21-11 STEP (5)C BONDING WITHIN LIMITS. FOUND S806 HAS IMPROPER RESISTANCE. REPLACED THE NR 2 ENGINE ANTI-ICE PRESSURE SENSOR, PER AMM 30-21-21/401. OPS CHECK GOOD. PERFORMED OPS TEST OF NR 2 ENG TAI VALVE AND OPS TEST FAILED. MANUAL OPENING OF PRSOV REVEALED FAILED PRSO VALVE OR SENSE LINES. PERFORMED LEAK CHECK OF ENG BLEED AIR SENSE LINES, REF AMM 36-11-00-700-805. FOUND LEAKING PRSOV BRAIDED SENSE LINE. REPLACED W/NEW PART FROM STOCK, LEAK CHECK GOOD. OPS TEST OF TAI VALVE GOOD, LEAK CHECK GOOD.