TM  11-5820-890-20-2 2-96 2.2. TROUBLESHOOTING FLOWCHARTS. Continued Chart 27 NO RT-A MODULATION FROM COMMANDER'S C 2298. (Sheet 12 of 14) NO YES SHORT TO GROUND ? 1.   REMOVE CX 13417 FROM MB  J3. 2.   CHECK CONTINUITY AT MB J3, PIN U TO PIN A (GND). 1.   REMOVE RTs. 2.   REMOVE VAA FROM MB. 3.   REMOVE CX 13300 FROM CX 13417. 4.   CHECK CONTINUITY AT CX 13300, PIN U TO PIN A (GND). NO YES SHORT TO GROUND ? REPLACE CX 13300. REPLACE MB. NO YES SHORT TO GROUND ? REPLACE VAA. REPLACE CX 13417. CHECK CONTINUITY AT VAA P1, PIN M TO PIN A (GND). 14 SH 12 V U T S R P N M L K J H F E D C B A CX 13300 V U T S R P N M L K J H F E D C B A MB J3 A D B C E F K S U T L H M V R P VAA P1 N J