TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 140 of 1205
TM 9-2320-387-24-l ELECTRICAL KNOWN INFO ROTARY SWITCH OK CIRCUIT BREAKER 1 OK POSSIBLE PROBLEMS BATTERY ALTERNATOR PCB RUN WIRING ACCESSORY WIRING KNOWN INFO BATTERY OK START WIRING OK ROTARY SWITCH OK ALTERNATOR OK POSSIBLE PROBLEMS PCB RUN WIRING ACCESSORY WIRING KNOWN INFO BATTERY OK START WIRING OK ROTARY SWITCH OK ALTERNATOR OK POSSIBLE PROBLEMS PCB RUN WIRING ACCESSORY WIRING DIAGNOSTIC FLOWCHART TEST OPTIONS 1. VOLTMETER START THE ENGINE. WHEN THE ENGINE STARTED, DID THE BAlTERY VOLTAGE INCREASE SO THE VOLTMETER IS IN THE GREEN ZONE? 2. STEXE-R TEST 67 (Page 246) 3. MULTIMETER REASON FOR QUESTtON If the voltage increases, the alternator is connected and DOES THE HEATER COOLING FAN WORK? ST OPTIONS 1 TE! I TRY IT. REASON FOR QUESTlON The cooling fan should work when the rotary switch is turned to RUN. DOES THE WINDSHIELD WIPER WORK WITH THE ROTARY SWITCH IN THE RUN POSITION? I TE! ST OPTIONS TRY IT. The windshield wiper should work with the rotary switch in the RUN Position. 2-80