TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 345 of 1205
TM 9-2320-387-24-l GLOW PLUGS CIRCUIT TEST OPT,ONS D’AGNoSnC FLoWCHART @> I r KNOWN INFO NOTHING POSSIBLE PROBLEMS GLOW PLUGS GLOW PLUG CONTROLLER PCB CABLES TO RUN THE GLOW PLUG CIRCUIT TESTS, THE BAlTERIES MUST BE IN A GOOD STATE OF CHARGE. IF YOU AREN’T SURE, RUN THE BAlTERY CIRCUIT TESTS. IF YOU ARE HERE BECAUSE THE WAIT-TO-START LAMP DOESN’T WORK PROPERLY, SEE THE NOTE ON THE RIGHT-HAND PAGE. CHECK ALL THE GLOW PLUG CIRCUIT CONNECTIONS (GLOW PLUGS, GLOW PLUG CONTROLLER, PROTECTIVE CONTROL BOX). ARE ALL THE CONNECTIONS CLEAN AND TIGHT? BATTERY TESTS (Page 2-237) REASON FOR QUESTION The glow plugs and their control circuits require battery power to work. KNOWN INFO VISUAL BATTERIES OK I I I I REASON FOR QUESTION Loose or dirty connections signals. can hinder current flow or cause mixups in the control POSSIBLE PROBLEMS GLOW PLUGS GLOW PLUG CONTROLLER PCB CABLES r KNOWN INFO I TEST OPTlONS BATTERIES OK CABLES/CONNECTIONS SEEM OK 1. STEIICE-R TEST SO (Page 2-505) TURN THE ROTARY SWITCH TO RUN. DO THE GLOW PLUGS DRAW 75-125 AMPS? (SEE NOTE ON RIGHT-HAND PAGE). I 2. MULTIMETER I REASON FOR QUESTION If the current is OK, then the POSSIBLE PROBLEMS GLOW PLUGS GLOW PLUG CONTROLLER PCB CABLES control box are OK.