TM 10-3930-675-20-1 0029 00-5 MISCELLANEOUS TRANSMISSION FAILURE TROUBLESHOOTING - CONTINUED 0029 00 Table 4. Error Code 747 - Backup Alarm Control Circuit, Open Circuit Failure Troubleshooting Procedure - Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 747 - Backup Alarm Control Circuit, Open Circuit Failure - Continued 11.Check   continuity   between connector  X150  pin  7  and connector X29 pin 3. If   continuity   is   not   present, repair or replace connectors (WP 0111 00). 12.Check   continuity   between connector   X29   pin   3   and connector XK5 pin 5. If   continuity   is   not   present, repair or replace connectors (WP 0111 00). 13.Check   continuity   between connector   XK5   pin   5   and connector relay 305 pin 85. a.  Replace relay 305 (WP 0073 00). b. If  continuity  is  not  present, replace    transmission    ECU (WP 0079 00). c.  If   wiring   harness   must   be replaced, notify SRA. 14.Check   continuity   between connector  X160  pin  10  and connector X150 pin 7. If   continuity   is   not   present, repair   or   replace   connectors A1507 (WP 0111 00). Table 5. Error Code 761 - 2WD/4WD Connection Valve Circuit, Short Circuit to Chassis Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 761 - 2WD/4WD Connection Valve Circuit, Short Circuit to Chassis Failure 1. Remove cab transmission and steering ECU panel cover and check     transmission     ECU connector for proper connection (WP 0079 00). Connect  loose  or  disconnected connector. 2. Remove cab rear wall center panel     cover     and     check connection  block  X172  for proper connections. Connect  loose  or  disconnected connectors. 3. Move    operator’s    cab    to transport position and remove transmission   access   covers (WP 0135 00). 4. Check transmission electrical harness connector 606, located on lower right side of transmission, for proper connection. Connect  loose  or  disconnected connector.