TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 412 of 890
TM 9-2320-280-20-1 KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION NO YES NO YES 2-318.2 Change 1 START 1 NOTHING DISTRIBUTION BOX CABLES GLOWPLUGS BATTERY TESTS (Page 2-251) 2 BATTERIES OK CHECK ALL THE GLOWPLUG CIRCUIT CONNECTIONS (GLOW- PLUGS, GLOWPLUG HARNESS CONNECTIONS). ARE ALL THE CONNECTIONS CLEAN AND TIGHT? DISTRIBUTION BOX CABLES GLOWPLUGS REPAIR AS NECESSARY VISUAL INSPECTION Loose or dirty connections can hinder current flow or cause mixups in the control signals. BATTERIES OK CABLES/CONNECTIONS SEEM OK DISTRIBUTION BOX CABLES GLOWPLUGS 3 MEASURE THE RESISTANCE FROM PINS A THROUGH H OF GLOWPLUG HARNESS AND GROUND. IS THE READING 2 TO 3 OHMS? 1. STE/ICE-R TEST 80 (Page 2-749) 2. MULTIMETER GO TO A, Page 2-318.6 GO TO 4, Page 2-318.4 If the resistance is OK, then the glowplugs and harness are OK. The glowplugs and their control circuits require battery power to work. GLOWPLUGS TO RUN THE GLOWPLUG CIRCUIT TESTS, THE BATTERIES MUST BE IN A GOOD STATE OF CHARGE. IF YOU AREN'T SURE, RUN THE BATTERY CIRCUIT TESTS. IF YOU ARE HERE BECAUSE THE “WAIT-TO-START” LAMP DOESN'T WORK PROPERLY, SEE THE NOTE ON THE RIGHT-HAND PAGE. DIAGNOSTIC FLOWCHART