TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_358

TROUBLESHOOTING CHART (continued) - TM-9-2350-287-20-1_360

TM-9-2350-287-20-1 Carrier Ammunition Tracked M992A21 (2350-01-352-3021) EIC:AE6 Manual
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TM 9-2350-287-20-1 2-19. TROUBLESHOOTING CHART (continued). u. AUXILIARY POWER UNIT (continued). (2) ENGINE FAILS TO CRANK. All other electrical systems operate (continued). Repair wire 65 or replace harness 12330248 (para 7-71). Verify problem is solved. l. 1. Remove and disassemble APU control box (para 7-22). 2. Place multimeter red probe on pin D and black probe in lead 65 connector. 3. Check for continuity. Repair wire 65A or replace harness 12330248 (para 7-71). Verify problem is solved. J. 1. Check APU control box APU START switch for continuity. 2. Place multimeter probes on each connector of APU START switch. 3. Hold APU START switch in ON position (refer to TM 9-2350-287-10). 4. Check for continuity. Replace APU START switch (para 7-22). Verify problem is solved. K. 1. Check PREHEAT switch for continuity. 2. Place multimeter probes on each connector of PREHEAT switch. 3. Place PREHEAT switch in ON position (refer to TM 9-2350-287-10). 4. Check for continuity. Continued on next page 2-307

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