TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l INSTRUMENTS CIRCUIT DIAGNOSTIC FLOWCHART fi9 TESTOPnONS I 1 r POWER AVAIlABLE TO WAIT-TO-START LAMP DOESN’T COME ON 1. STE/ICE-R TEST 69 (Page 2-506) 2. MtJLTlMETER DISCONNECT WIRE 27F AT THE WAIT-TO-START LAMP. WITH THE ROTARY SWITCH IN THE RUN POSITION, DO YOU HAVE BAl-t-ERY VOLTAGE AT WIRE 27F? 1 POSSIBLE PROBLEMS REASON FOR QUESTION You know power is available at the wire junction. Now you need to know if it is reaching the gauge. WAIT-TO-START LAMP PCB GLOW PLUG CONTROLLER WIRING 1 TEST OPTlONS DISCONNECT PCB ENGINE CONNECTOR, BODY CONNECTOR & WIRE 571A AT THE WAIT-TO- START LAMP. DO YOU HAVE CONTINUITY BETWEEN WIRE 571 A & SOCKET E ON THE BODY CONNECTOR HARNESS? 1. St-EXE-R TEST 91 (Page 2-506) 2. MULTIMETER REASON FOR QUESTION The ground circuit for the lamp goes through this wire and the PCB. POSSIBLE PROBLEMS WAIT-TO-START LAMP PCB GLOW PLUG CONTROLLER WIRING 1 I TEST OPTIONS LAMP HAS GROUND CONNECT RED LEAD OF STE/ICE-R OR MULTIMETER TO LEAD WIRE 27 OF THE WAIT-TO- START LAMP AND CONNECT THE BLACK LEAD TO WIRE 571 LEAD OF THE LAMP. DOES THE LAMP GLOW DIMLY? 1. STEXE-R TEST 91 (Page 2-606) 2. MULTIMETER (RESISTANCE) REASON FOR QUESTION You need to make sure the lamp can light. POSSIBLE PROBLEMS 1 WAIT-TO-START LAMP PCB GLOW PLUG CONTROLLER WIRING -- 2-318