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TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download

Page 445 of 1205

REFERENCE INFORMATION TRANSMISSION SYSTEM TM 9-2320-387-24-l Will Not Display DTC Code 12, or Check Transmission ON Steady (NOTE: TRANSMISSION CHECK IAMP IS THE LAMP NEXT TO THE SHln LEVER MARKED 7RANS-ONLY’.) REMOVE DIAGNOSTIC SWITCH CABLE. INSTALL JUMPER CABLE BETWEEN PINS AAND E of J2 ON TCM ASSY. CHECK DlAGNOSTlC CABLE FOR OPEN AND REPAIR. READ CCOES AND REMOVE JUMPER. l IGNlTlON OFF. l DISCONNECT TCM CONNECTOR. . IGNlTlON ON. l IGNITION OFF. l DIAGNOSTIC TERMINAL NOT GROUNDED. l RECONNECT TCM CONNECTOR. . IGNlTlON ON AND ENGINE OFF. . CONNECT PROBE PIN E ON J2 TO GROUND. DIAGNOSTIC SWITCH CABLE \ Ji 52 CONNECTOR CONNECTOR I REPLACE DEFECTIVE TCM (PARA 4-45). DTC 12 FLASHES I OPEN CKT PIN A J2. REPLACE TCM (PARA 4-45). NOTE: AFTER TROUBLESHOOTING. RECONNECT GLOW PLUG CONTROLLER. VEHICLE WILL HAVE TO BE OPERATED IN ORDER FOR TCM TO RECEIVE TROUBLE CODES. AFTER REPAIRS, CHECK TRANS LAMP OPERATION. 2-393