TM 10-3930-669-20 25.  ENGINE STARTS WITH TRANSMISSION ENGAGED (CONT). KNOWN INFO 24 vdc circuits operate. Wire 33 OK. Diode module DM1 OK. Wire 39 or wire 40 OK. Diode module DM2 OK. Wire 41 OK. POSSIBLE PROBLEMS Relay R3 ground wire faulty. Relay R3 faulty. KNOWN INFO 24 vdc circuits operate. Wire 33 OK. Diode module DM1 OK. Wire 39 or wire 40 OK. Diode module DM2 OK. Wire 41 OK. Relay R3 ground wire OK. Relay R3 OK. POSSIBLE PROBLEMS TEST OPTIONS Continuity test. STE/ICE-R #91. REASON FOR QUESTION If    continuity    is    not    present, relay  R3  ground  wire  is  faulty. If  ground  wire  is  OK,  relay  R3 is faulty. TEST OPTIONS Verify repair. REASON FOR QUESTION If engine does not start with transmission engaged, fault has been corrected. ¬ ¬ 2-280