TM 10-3930-66920 1.  ENGINE FAILS TO CRANK (CONT). KNOWN INFO TEST OPTIONS Shunt to starter cable OK. Starter ground cable OK. Starter OK. Batteries OK. Battery to shunt cable OK. Wire 2 OK. Engine switch OK. Wire 33 OK. Wire 32 OK. Relay R3 OK. Main power switch OK. Fuse 1 OK. Wire 4 OK. Relay R5 ground wire OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Wire 7 faulty. Wire 23 faulty. Relay R5 faulty. If 22 to 24 vdc are not present, wire 7 is faulty. KNOWN INFO TEST OPTIONS Shunt to starter cable OK. Starter ground cable OK. Starter OK. Batteries OK. Battery to shunt cable OK. Wire 2 OK. Engine switch OK. Wire 33 OK. Wire 32 OK. Relay R3 OK. Main power switch OK. Fuse 1 OK. Wire 4 OK. Relay R5 ground wire OK. Wire 7 OK. Continuity test. STE/ICE-R #91. POSSIBLE PROBLEMS REASON FOR QUESTION Wire 23 faulty. Relay R5 faulty. If continuity is not present, wire 23 is faulty.  If wire 23 is OK, relay R5 is faulty. 2-26

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