What was found
ENROUTE AT FL360, NR 2 GEN DRIVE LIGHT ILLUMINATED. DISCONNECTED NR 2 GEN DRIVE, STARTED APU & POWERED BUSS WITH APU. ACFT GROUNDED. NR 2 EDG INOP. VERIFIED AT 3 GEN AC VOLTS & CPS FREQ 0 AFTER DISCONNECT. ISOLATED SHORT BETWEEN PINS & PIN TO GROUND BTWN ENGINE FIREWALL CONNECTOR PINS IAW WDM 24-11-21. GCU 2 REMOVED IAW AMM 24-21-81-000-801. REMOVED CONNECTOR ON IDG & CONNECTOR AT FIREWALL. FOUND PINS 8 & 9 IAW SWPM 20-60-06 & 20-20-00. INSTALLED & TESTED GCU IAW AMM 24-21-81-400-801, TEST PASSED. CONNECTED CONNECTORS & OPS TESTED IAW AMM 24-11-00-700-803. ENG OPS CHECKED IAW AMM 71-00-00-801-808-F00. SYS GOOD. EDP DEPRESS VALVE TESTED GOOD IAW AMM 29-11-11-400-803-001.