TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).u. AUXILIARY POWER UNIT (continued).(5) ENGINE OVERHEATS (continued).D.Repair lead 493 or replace harness12329650 (para 18-22). Verify problemis solved.1. Connect lead 493 to HIGH AIRTemperature switch.2. Remove APU control box (para 7-22).3. Disconnect harness 12330248 connectorfrom APU control box.4 Using a multimeter check continuity be-tween socket C harness 1233180 at APUwall and pin J at control box connector.5. Check for continuity.Repair wire 493 or replace harness12330248. (para 7-71). Verify problem issolved.E. 1. Connect harness 12329650 to APU com-partment wall.2. Disassemble APU control box (para 7-22).3. Place multimeter red probe in socket J ofAPU control box connector and black probein wire 493 connector.4. Check for continuity.Continued on next page2-315
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