TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 288 of 1205
TM 9-2320-387-24-l PROTECTIVE CONTROL BOX KNOWN INFO BAllERlES OK LEAD 578 GROUND OK IGNITION SWlTCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK GLOW PLUG CONTROLLER OK ALTERNATOR OK HARNESS WIRE 2A OK POSSIBLE PROBLEMS PROTECTlVE CONTROL BOX BAD I KNOWN INFO BAlTERIES OK LEAD 578 GROUND OK IGNlTlON SWTCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK ALTERNATOR OK HARNESS WIRE 2A OK PROTECTIVE CONTROL BOX OK POSSIBLE PROBLEMS GLOW PLUG CONTROLLER BAD S LED 11 CYCLING ON AND 3FF? DIAGNOSTIC FLOWCHART - I OPTlONS VISUAL REASON FOR QUESTION If LED is not cycling ON and OFF, that would indicate a PCB malfunction. 1 TEST OPTIONS AT ENGINE OPERATING TEMPERATURE, DOES LED 11 STOP CYCLING ON AND OFF? VISUAL I REASON FOR QUESTION If LED does not stop cycling ON IF 1 glow plug controller malfunction. TEST CHAIN AGAIN and OFF, that woulb indicate a IS REPLACED. NO PROTECTIVE CONTROL BOX FAULT FOUND. 2-230