TM 10-3930-669-20 1.  ENGINE FAILS TO CRANK (CONT). KNOWN INFO TEST OPTIONS Batteries OK. Battery to shunt cable OK. Wire 2 OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Shunt to starter cable faulty. Starter ground cable faulty. Starter faulty. Relay R5 ground wire faulty. Wire 7 faulty. Wire 23 faulty. Relay R5 faulty. Engine switch faulty. Wire 33 faulty. Wire 32 faulty. Relay R3 faulty. Main power switch faulty. Fuse 1 faulty. Wire 4 faulty. This question eliminates a possible problem or group of possible problems determining where troubleshooting continues. KNOWN INFO TEST OPTIONS Batteries OK. Battery to shunt cable OK. Wire 2 OK. Relay R5 ground wire OK. Wire 7 OK. Wire 23 OK. Relay RS OK. Engine switch OK. Wire 33 OK. Wire 32 OK. Relay R3 OK. Main power switch OK. Fuse 1 OK. Wire 4 OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Shunt to starter cable faulty. Starter ground cable faulty. Starter faulty. If 22 to 24 vdc are not present, power cable is faulty. 2-16

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