TM 10-3930-669-20 2.  ENGINE CRANKS BUT WILL NOT RUN (CONT). KNOWN INFO TEST OPTIONS Engine cranks. Glow plug indicator operates. Fuse 2 OK. Wire 6 OK. Fuel shutoff solenoid OK. Glow plugs OK. Throttle adjustment correct. Fuel OK. Fuel injector(s) OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Wire 34 faulty. Relay R4 ground wire faulty. Wire 7 faulty. Wire 9A faulty. Relay R4 faulty. If  22  to  24  vdc  are  not  present, wire 34 is faulty. KNOWN INFO TEST OPTIONS Engine cranks. Glow plug indicator operates. Fuse 2 OK. Wire 6 OK. Fuel shutoff solenoid OK. Glow plugs OK. Throttle adjustment correct. Fuel OK. Fuel injector(s) OK. Wire 34 OK. Continuity test. STE/ICE-R #91. POSSIBLE PROBLEMS REASON FOR QUESTION Relay R4 ground wire faulty. Wire 7 faulty. Wire 9A faulty. Relay R4 faulty. If  continuity  is  not  present,  relay R4 ground wire is faulty. ¬ ¬ 2-52